From 97ea26df26c18f77f1482d0a0b9eeafffefa36ff Mon Sep 17 00:00:00 2001 From: Andrew Kroh Date: Mon, 16 Jan 2017 10:24:17 -0500 Subject: [PATCH 1/3] Fix glide.yaml by removing https from a package name --- glide.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/glide.yaml b/glide.yaml index 1f9c67b9e0f..f5997e17eb7 100644 --- a/glide.yaml +++ b/glide.yaml @@ -105,7 +105,7 @@ import: - zlib - package: github.com/klauspost/cpuid version: v1.0 -- package: https://github.com/go-inf/inf +- package: github.com/go-inf/inf version: v0.9.0 - package: github.com/gorhill/cronexpr version: f0984319b44273e83de132089ae42b1810f4933b From 2a4f5beffa10b421db3f514a173e761134753ab8 Mon Sep 17 00:00:00 2001 From: Andrew Kroh Date: Mon, 16 Jan 2017 15:48:22 -0500 Subject: [PATCH 2/3] Add test dependencies to dev-tools --- dev-tools/glide.yaml | 18 + .../vendor/github.com/blakesmith/ar/COPYING | 20 + .../vendor/github.com/blakesmith/ar/README.md | 9 + .../vendor/github.com/blakesmith/ar/common.go | 48 ++ .../vendor/github.com/blakesmith/ar/reader.go | 155 ++++ .../vendor/github.com/blakesmith/ar/writer.go | 124 +++ .../github.com/cavaliercoder/go-rpm/README.md | 57 ++ .../cavaliercoder/go-rpm/dependency.go | 113 +++ .../github.com/cavaliercoder/go-rpm/doc.go | 21 + .../cavaliercoder/go-rpm/fileinfo.go | 65 ++ .../github.com/cavaliercoder/go-rpm/fuzz.go | 42 + .../cavaliercoder/go-rpm/gpgcheck.go | 136 ++++ .../github.com/cavaliercoder/go-rpm/header.go | 291 +++++++ .../github.com/cavaliercoder/go-rpm/index.go | 159 ++++ .../cavaliercoder/go-rpm/keyring.go | 55 ++ .../github.com/cavaliercoder/go-rpm/lead.go | 79 ++ .../cavaliercoder/go-rpm/packagefile.go | 387 +++++++++ .../github.com/cavaliercoder/go-rpm/tags.go | 355 +++++++++ .../cavaliercoder/go-rpm/version.go | 138 ++++ dev-tools/vendor/golang.org/x/crypto/AUTHORS | 3 + .../golang.org/x/crypto/CONTRIBUTING.md | 31 + .../vendor/golang.org/x/crypto/CONTRIBUTORS | 3 + dev-tools/vendor/golang.org/x/crypto/LICENSE | 27 + dev-tools/vendor/golang.org/x/crypto/PATENTS | 22 + dev-tools/vendor/golang.org/x/crypto/README | 3 + .../vendor/golang.org/x/crypto/cast5/cast5.go | 526 ++++++++++++ .../x/crypto/openpgp/armor/armor.go | 219 +++++ .../x/crypto/openpgp/armor/encode.go | 160 ++++ .../x/crypto/openpgp/canonical_text.go | 59 ++ .../x/crypto/openpgp/clearsign/clearsign.go | 376 +++++++++ .../x/crypto/openpgp/elgamal/elgamal.go | 122 +++ .../x/crypto/openpgp/errors/errors.go | 72 ++ .../golang.org/x/crypto/openpgp/keys.go | 637 +++++++++++++++ .../x/crypto/openpgp/packet/compressed.go | 123 +++ .../x/crypto/openpgp/packet/config.go | 91 +++ .../x/crypto/openpgp/packet/encrypted_key.go | 199 +++++ .../x/crypto/openpgp/packet/literal.go | 89 +++ .../x/crypto/openpgp/packet/ocfb.go | 143 ++++ .../openpgp/packet/one_pass_signature.go | 73 ++ .../x/crypto/openpgp/packet/opaque.go | 162 ++++ .../x/crypto/openpgp/packet/packet.go | 537 +++++++++++++ .../x/crypto/openpgp/packet/private_key.go | 380 +++++++++ .../x/crypto/openpgp/packet/public_key.go | 748 ++++++++++++++++++ .../x/crypto/openpgp/packet/public_key_v3.go | 279 +++++++ .../x/crypto/openpgp/packet/reader.go | 76 ++ .../x/crypto/openpgp/packet/signature.go | 731 +++++++++++++++++ .../x/crypto/openpgp/packet/signature_v3.go | 146 ++++ .../openpgp/packet/symmetric_key_encrypted.go | 155 ++++ .../openpgp/packet/symmetrically_encrypted.go | 290 +++++++ .../x/crypto/openpgp/packet/userattribute.go | 91 +++ .../x/crypto/openpgp/packet/userid.go | 160 ++++ .../golang.org/x/crypto/openpgp/read.go | 442 +++++++++++ .../golang.org/x/crypto/openpgp/s2k/s2k.go | 273 +++++++ .../golang.org/x/crypto/openpgp/write.go | 378 +++++++++ 54 files changed, 10098 insertions(+) create mode 100644 dev-tools/glide.yaml create mode 100644 dev-tools/vendor/github.com/blakesmith/ar/COPYING create mode 100644 dev-tools/vendor/github.com/blakesmith/ar/README.md create mode 100644 dev-tools/vendor/github.com/blakesmith/ar/common.go create mode 100644 dev-tools/vendor/github.com/blakesmith/ar/reader.go create mode 100644 dev-tools/vendor/github.com/blakesmith/ar/writer.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/README.md create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/dependency.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/doc.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/fileinfo.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/fuzz.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/gpgcheck.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/header.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/index.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/keyring.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/lead.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/packagefile.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/tags.go create mode 100644 dev-tools/vendor/github.com/cavaliercoder/go-rpm/version.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/AUTHORS create mode 100644 dev-tools/vendor/golang.org/x/crypto/CONTRIBUTING.md create mode 100644 dev-tools/vendor/golang.org/x/crypto/CONTRIBUTORS create mode 100644 dev-tools/vendor/golang.org/x/crypto/LICENSE create mode 100644 dev-tools/vendor/golang.org/x/crypto/PATENTS create mode 100644 dev-tools/vendor/golang.org/x/crypto/README create mode 100644 dev-tools/vendor/golang.org/x/crypto/cast5/cast5.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/armor/armor.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/armor/encode.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/canonical_text.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/clearsign/clearsign.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/elgamal/elgamal.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/errors/errors.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/keys.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/compressed.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/config.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/encrypted_key.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/literal.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/ocfb.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/one_pass_signature.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/opaque.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/packet.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/private_key.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key_v3.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/reader.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature_v3.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetric_key_encrypted.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetrically_encrypted.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userattribute.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userid.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/read.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/s2k/s2k.go create mode 100644 dev-tools/vendor/golang.org/x/crypto/openpgp/write.go diff --git a/dev-tools/glide.yaml b/dev-tools/glide.yaml new file mode 100644 index 00000000000..1d415f15a18 --- /dev/null +++ b/dev-tools/glide.yaml @@ -0,0 +1,18 @@ +package: github.com/elastic/beats/dev-tools +import: [] +testImports: +- name: github.com/blakesmith/ar + version: 8bd4349a67f2533b078dbc524689d15dba0f4659 +- name: github.com/cavaliercoder/go-rpm + version: 9664735b838ea0a81e4aace3197ebe0d4040f952 +- name: golang.org/x/crypto + version: 2f8be38b9a7533b8763d48273737ff6e90428a96 + subpackages: + - cast5 + - openpgp + - openpgp/armor + - openpgp/elgamal + - openpgp/errors + - openpgp/packet + - openpgp/s2k + diff --git a/dev-tools/vendor/github.com/blakesmith/ar/COPYING b/dev-tools/vendor/github.com/blakesmith/ar/COPYING new file mode 100644 index 00000000000..c99e81289f7 --- /dev/null +++ b/dev-tools/vendor/github.com/blakesmith/ar/COPYING @@ -0,0 +1,20 @@ +Copyright (c) 2013 Blake Smith + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. + diff --git a/dev-tools/vendor/github.com/blakesmith/ar/README.md b/dev-tools/vendor/github.com/blakesmith/ar/README.md new file mode 100644 index 00000000000..ff75d7ff0fe --- /dev/null +++ b/dev-tools/vendor/github.com/blakesmith/ar/README.md @@ -0,0 +1,9 @@ +# Golang ar (archive) file reader + +This is a simple library for reading and writing [ar](http://en.wikipedia.org/wiki/Ar_(Unix)) files in common format. It is influenced heavily in style and interface from the golang [tar](http://golang.org/pkg/archive/tar/) package. + +## Author + +Written by Blake Smith + +Licensed under the MIT license. \ No newline at end of file diff --git a/dev-tools/vendor/github.com/blakesmith/ar/common.go b/dev-tools/vendor/github.com/blakesmith/ar/common.go new file mode 100644 index 00000000000..335bade4e28 --- /dev/null +++ b/dev-tools/vendor/github.com/blakesmith/ar/common.go @@ -0,0 +1,48 @@ +/* +Copyright (c) 2013 Blake Smith + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ +package ar + +import ( + "time" +) + +const ( + HEADER_BYTE_SIZE = 60 + GLOBAL_HEADER = "!\n" +) + +type Header struct { + Name string + ModTime time.Time + Uid int + Gid int + Mode int64 + Size int64 +} + +type slicer []byte + +func (sp *slicer) next(n int) (b []byte) { + s := *sp + b, *sp = s[0:n], s[n:] + return +} diff --git a/dev-tools/vendor/github.com/blakesmith/ar/reader.go b/dev-tools/vendor/github.com/blakesmith/ar/reader.go new file mode 100644 index 00000000000..4b824939826 --- /dev/null +++ b/dev-tools/vendor/github.com/blakesmith/ar/reader.go @@ -0,0 +1,155 @@ +/* +Copyright (c) 2013 Blake Smith + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ +package ar + +import ( + "io" + "io/ioutil" + "os" + "strconv" + "time" +) + +// Provides read access to an ar archive. +// Call next to skip files +// +// Example: +// reader := NewReader(f) +// var buf bytes.Buffer +// for { +// _, err := reader.Next() +// if err == io.EOF { +// break +// } +// if err != nil { +// t.Errorf(err.Error()) +// } +// io.Copy(&buf, reader) +// } + +type Reader struct { + r io.Reader + nb int64 + pad int64 +} + +// Copies read data to r. Strips the global ar header. +func NewReader(r io.Reader) *Reader { + io.CopyN(ioutil.Discard, r, 8) // Discard global header + + return &Reader{r: r} +} + +func (rd *Reader) string(b []byte) string { + i := len(b)-1 + for i > 0 && b[i] == 32 { + i-- + } + + return string(b[0:i+1]) +} + +func (rd *Reader) numeric(b []byte) int64 { + i := len(b)-1 + for i > 0 && b[i] == 32 { + i-- + } + + n, _ := strconv.ParseInt(string(b[0:i+1]), 10, 64) + + return n +} + +func (rd *Reader) octal(b []byte) int64 { + i := len(b)-1 + for i > 0 && b[i] == 32 { + i-- + } + + n, _ := strconv.ParseInt(string(b[3:i+1]), 8, 64) + + return n +} + +func (rd *Reader) skipUnread() error { + skip := rd.nb + rd.pad + rd.nb, rd.pad = 0, 0 + if seeker, ok := rd.r.(io.Seeker); ok { + _, err := seeker.Seek(skip, os.SEEK_CUR) + return err + } + + _, err := io.CopyN(ioutil.Discard, rd.r, skip) + return err +} + +func (rd *Reader) readHeader() (*Header, error) { + headerBuf := make([]byte, HEADER_BYTE_SIZE) + if _, err := io.ReadFull(rd.r, headerBuf); err != nil { + return nil, err + } + + header := new(Header) + s := slicer(headerBuf) + + header.Name = rd.string(s.next(16)) + header.ModTime = time.Unix(rd.numeric(s.next(12)), 0) + header.Uid = int(rd.numeric(s.next(6))) + header.Gid = int(rd.numeric(s.next(6))) + header.Mode = rd.octal(s.next(8)) + header.Size = rd.numeric(s.next(10)) + + rd.nb = int64(header.Size) + if header.Size%2 == 1 { + rd.pad = 1 + } else { + rd.pad = 0 + } + + return header, nil +} + +// Call Next() to skip to the next file in the archive file. +// Returns a Header which contains the metadata about the +// file in the archive. +func (rd *Reader) Next() (*Header, error) { + err := rd.skipUnread() + if err != nil { + return nil, err + } + + return rd.readHeader() +} + +// Read data from the current entry in the archive. +func (rd *Reader) Read(b []byte) (n int, err error) { + if rd.nb == 0 { + return 0, io.EOF + } + if int64(len(b)) > rd.nb { + b = b[0:rd.nb] + } + n, err = rd.r.Read(b) + rd.nb -= int64(n) + + return +} diff --git a/dev-tools/vendor/github.com/blakesmith/ar/writer.go b/dev-tools/vendor/github.com/blakesmith/ar/writer.go new file mode 100644 index 00000000000..680f5cbc745 --- /dev/null +++ b/dev-tools/vendor/github.com/blakesmith/ar/writer.go @@ -0,0 +1,124 @@ +/* +Copyright (c) 2013 Blake Smith + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. +*/ +package ar + +import ( + "errors" + "io" + "strconv" +) + +var ( + ErrWriteTooLong = errors.New("ar: write too long") +) + +// Writer provides sequential writing of an ar archive. +// An ar archive is sequence of header file pairs +// Call WriteHeader to begin writing a new file, then call Write to supply the file's data +// +// Example: +// archive := ar.NewWriter(writer) +// archive.WriteGlobalHeader() +// header := new(ar.Header) +// header.Size = 15 // bytes +// if err := archive.WriteHeader(header); err != nil { +// return err +// } +// io.Copy(archive, data) +type Writer struct { + w io.Writer + nb int64 // number of unwritten bytes for the current file entry +} + +// Create a new ar writer that writes to w +func NewWriter(w io.Writer) *Writer { return &Writer{w: w} } + +func (aw *Writer) numeric(b []byte, x int64) { + s := strconv.FormatInt(x, 10) + for len(s) < len(b) { + s = s + " " + } + copy(b, []byte(s)) +} + +func (aw *Writer) octal(b []byte, x int64) { + s := "100" + strconv.FormatInt(x, 8) + for len(s) < len(b) { + s = s + " " + } + copy(b, []byte(s)) +} + +func (aw *Writer) string(b []byte, str string) { + s := str + for len(s) < len(b) { + s = s + " " + } + copy(b, []byte(s)) +} + +// Writes to the current entry in the ar archive +// Returns ErrWriteTooLong if more than header.Size +// bytes are written after a call to WriteHeader +func (aw *Writer) Write(b []byte) (n int, err error) { + if int64(len(b)) > aw.nb { + b = b[0:aw.nb] + err = ErrWriteTooLong + } + n, werr := aw.w.Write(b) + aw.nb -= int64(n) + if werr != nil { + return n, werr + } + + if len(b)%2 == 1 { // data size must be aligned to an even byte + n2, _ := aw.w.Write([]byte{'\n'}) + return n+n2, err + } + + return +} + +func (aw *Writer) WriteGlobalHeader() error { + _, err := aw.w.Write([]byte(GLOBAL_HEADER)) + return err +} + +// Writes the header to the underlying writer and prepares +// to receive the file payload +func (aw *Writer) WriteHeader(hdr *Header) error { + aw.nb = int64(hdr.Size) + header := make([]byte, HEADER_BYTE_SIZE) + s := slicer(header) + + aw.string(s.next(16), hdr.Name) + aw.numeric(s.next(12), hdr.ModTime.Unix()) + aw.numeric(s.next(6), int64(hdr.Uid)) + aw.numeric(s.next(6), int64(hdr.Gid)) + aw.octal(s.next(8), hdr.Mode) + aw.numeric(s.next(10), hdr.Size) + aw.string(s.next(2), "`\n") + + _, err := aw.w.Write(header) + + return err +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/README.md b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/README.md new file mode 100644 index 00000000000..12d85c0e792 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/README.md @@ -0,0 +1,57 @@ +# go-rpm [![Build Status](https://travis-ci.org/cavaliercoder/go-rpm.svg?branch=master)](https://travis-ci.org/cavaliercoder/go-rpm) [![GoDoc](https://godoc.org/github.com/cavaliercoder/go-rpm?status.svg)](https://godoc.org/github.com/cavaliercoder/go-rpm) + +A native implementation of the RPM file specification in Go. + + $ go get github.com/cavaliercoder/go-rpm + + +The go-rpm package aims to enable cross-platform tooling for yum/dnf/rpm +written in Go (E.g. [y10k](https://github.com/cavaliercoder/y10k)). + +Initial goals include like-for-like implementation of existing rpm ecosystem +features such as: + +* Reading of modern and legacy rpm package file formats +* Reading, creating and updating modern and legacy yum repository metadata +* Reading of the rpm database + +```go +package main + +import ( + "fmt" + "github.com/cavaliercoder/go-rpm" +) + +func main() { + p, err := rpm.OpenPackageFile("my-package.rpm") + if err != nil { + panic(err) + } + + fmt.Printf("Loaded package: %v", p) +} +``` + + +## License + +Copyright (c) 2015 Ryan Armstrong + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/dependency.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/dependency.go new file mode 100644 index 00000000000..b20366bbea9 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/dependency.go @@ -0,0 +1,113 @@ +package rpm + +import ( + "fmt" +) + +// Dependency flags indicate how versions comparisons should be computed when +// comparing versions of dependent packages. +const ( + DepFlagAny = 0 + DepFlagLesser = (1 << 1) + DepFlagGreater = (1 << 2) + DepFlagEqual = (1 << 3) + DepFlagLesserOrEqual = (DepFlagEqual | DepFlagLesser) + DepFlagGreaterOrEqual = (DepFlagEqual | DepFlagGreater) +) + +// See: https://github.com/rpm-software-management/rpm/blob/master/lib/rpmds.h#L25 + +// Dependency is an interface which represents a relationship between two +// packages. It might indicate that one package requires, conflicts with, +// obsoletes or provides another package. +// +// Dependency implements the PackageVersion interface and so may be used when +// comparing versions with other types of packages. +type Dependency interface { + PackageVersion + + // DepFlag constants + Flags() int +} + +// private basic implementation or a package dependency. +type dependency struct { + flags int + name string + epoch int + version string + release string +} + +// Dependencies are a slice of Dependency interfaces. +type Dependencies []Dependency + +// NewDependency returns a new instance of a package dependency definition. +func NewDependency(flgs int, name string, epoch int, version string, release string) Dependency { + return &dependency{ + flags: flgs, + name: name, + epoch: epoch, + version: version, + release: release, + } +} + +// String returns a string representation a package dependency in a similar +// format to `rpm -qR`. +func (c *dependency) String() string { + s := c.name + + switch { + case DepFlagLesserOrEqual == (c.flags & DepFlagLesserOrEqual): + s = fmt.Sprintf("%s <=", s) + + case DepFlagLesser == (c.flags & DepFlagLesser): + s = fmt.Sprintf("%s <", s) + + case DepFlagGreaterOrEqual == (c.flags & DepFlagGreaterOrEqual): + s = fmt.Sprintf("%s >=", s) + + case DepFlagGreater == (c.flags & DepFlagGreater): + s = fmt.Sprintf("%s >", s) + + case DepFlagEqual == (c.flags & DepFlagEqual): + s = fmt.Sprintf("%s =", s) + } + + if c.version != "" { + s = fmt.Sprintf("%s %s", s, c.version) + } + + if c.release != "" { + s = fmt.Sprintf("%s.%s", s, c.release) + } + + return s +} + +// Flags determines the nature of the package relationship and the comparison +// used for the given version constraint. +func (c *dependency) Flags() int { + return c.flags +} + +// Name is the name of the package target package. +func (c *dependency) Name() string { + return c.name +} + +// Epoch is the epoch constraint of the target package. +func (c *dependency) Epoch() int { + return c.epoch +} + +// Version is the version constraint of the target package. +func (c *dependency) Version() string { + return c.version +} + +// Release is the release constraint of the target package. +func (c *dependency) Release() string { + return c.release +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/doc.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/doc.go new file mode 100644 index 00000000000..a132bf8eed1 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/doc.go @@ -0,0 +1,21 @@ +/* +A native implementation of the RPM file specification in Go. + + package main + + import ( + "fmt" + "github.com/cavaliercoder/go-rpm" + ) + + func main() { + p, err := rpm.OpenPackageFile("my-package.rpm") + if err != nil { + panic(err) + } + + fmt.Printf("Loaded package: %v", p) + } + +*/ +package rpm diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/fileinfo.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/fileinfo.go new file mode 100644 index 00000000000..d1102ad9544 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/fileinfo.go @@ -0,0 +1,65 @@ +package rpm + +import ( + "os" + "time" +) + +// A FileInfo describes a file in a RPM package and is returned by +// packagefile.Files. +// +// FileInfo implements the os.FileInfo interface. +type FileInfo struct { + name string + size int64 + mode os.FileMode + modTime time.Time + isDir bool + owner string + group string +} + +func (f *FileInfo) String() string { + return f.Name() +} + +// Name is the full path of a file in a RPM package +func (f *FileInfo) Name() string { + return f.name +} + +// Size is the size in bytes of a file in a RPM package +func (f *FileInfo) Size() int64 { + return f.size +} + +// Mode is the file mode in bits of a file in a RPM package +func (f *FileInfo) Mode() os.FileMode { + return f.mode +} + +// ModTime is the modification time of a file in a RPM package +func (f *FileInfo) ModTime() time.Time { + return f.modTime +} + +// IsDir returns true if a file is a directory in a RPM package +func (f *FileInfo) IsDir() bool { + return f.isDir +} + +// Owner is the name of the owner of a file in a RPM package +func (f *FileInfo) Owner() string { + return f.owner +} + +// Group is the name of the owner group of a file in a RPM package +func (f *FileInfo) Group() string { + return f.group +} + +// Sys is required to implement os.FileInfo and always returns nil +func (f *FileInfo) Sys() interface{} { + // underlying data source is a bunch of rpm header indices + return nil +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/fuzz.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/fuzz.go new file mode 100644 index 00000000000..3344922c4b9 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/fuzz.go @@ -0,0 +1,42 @@ +// +build gofuzz + +package rpm + +import "bytes" + +// Fuzz tests the parsing and error handling of random byte arrays using +// https://github.com/dvyukov/go-fuzz. +func Fuzz(data []byte) int { + if p, err := ReadPackageFile(bytes.NewReader(data)); err != nil { + // handled errors are not very interesting + return 0 + } else { + // call some tag handlers + _ = p.String() + _ = p.Requires() + _ = p.Conflicts() + _ = p.Obsoletes() + _ = p.Provides() + + // read all index values + for _, h := range p.Headers { + for _, x := range h.Indexes { + switch x.Type { + case IndexDataTypeBinary: + _ = h.Indexes.BytesByTag(x.Tag) + + case IndexDataTypeChar, IndexDataTypeInt8, IndexDataTypeInt16, IndexDataTypeInt32, IndexDataTypeInt64: + _ = h.Indexes.IntsByTag(x.Tag) + _ = h.Indexes.IntByTag(x.Tag) + + case IndexDataTypeString, IndexDataTypeI8NString, IndexDataTypeStringArray: + _ = h.Indexes.StringsByTag(x.Tag) + _ = h.Indexes.StringByTag(x.Tag) + } + } + } + + // everything worked with random input... interesting :| + return 1 + } +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/gpgcheck.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/gpgcheck.go new file mode 100644 index 00000000000..b028efccec1 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/gpgcheck.go @@ -0,0 +1,136 @@ +package rpm + +import ( + "bytes" + "crypto/md5" + "fmt" + "golang.org/x/crypto/openpgp" + "golang.org/x/crypto/openpgp/errors" + "io" +) + +// Signature storage types (as defined in package lead segment) +const ( + // Signature is stored in the first package header + RPMSIGTYPE_HEADERSIG = 5 +) + +// Predefined checksum errors. +var ( + // ErrMD5ValidationFailed indicates that a RPM package failed checksum + // validation. + ErrMD5ValidationFailed = fmt.Errorf("MD5 checksum validation failed") + + // ErrGPGValidationFailed indicates that a RPM package failed GPG signature + // validation. + ErrGPGValidationFailed = fmt.Errorf("GPG signature validation failed") +) + +// rpmReadSigHeader reads the lead and signature header of a rpm package and +// returns a pointer to the signature header. +func rpmReadSigHeader(r io.Reader) (*Header, error) { + // read package lead + if lead, err := ReadPackageLead(r); err != nil { + return nil, err + } else { + // check signature type + if lead.SignatureType != RPMSIGTYPE_HEADERSIG { + return nil, fmt.Errorf("Unsupported signature type: 0x%x", lead.SignatureType) + } + } + + // read signature header + sigheader, err := ReadPackageHeader(r) + if err != nil { + return nil, err + } + + return sigheader, nil +} + +// GPGCheck validates the integrity of a RPM package file read from the given +// io.Reader. Public keys in the given keyring are used to validate the package +// signature. +// +// If validation succeeds, nil is returned. If validation fails, +// ErrGPGValidationFailed is returned. +// +// This function is an expensive operation which reads the entire package file. +func GPGCheck(r io.Reader, keyring openpgp.KeyRing) (string, error) { + // read signature header + sigheader, err := rpmReadSigHeader(r) + if err != nil { + return "", err + } + + // get signature bytes + var sigval []byte = nil + for _, tag := range []int{RPMSIGTAG_PGP, RPMSIGTAG_PGP5, RPMSIGTAG_GPG} { + if sigval = sigheader.Indexes.BytesByTag(tag); sigval != nil { + break + } + } + + if sigval == nil { + return "", fmt.Errorf("Package signature not found") + } + + // check signature + signer, err := openpgp.CheckDetachedSignature(keyring, r, bytes.NewReader(sigval)) + if err == errors.ErrUnknownIssuer { + return "", ErrGPGValidationFailed + } else if err != nil { + return "", err + } + + // get signer identity + for id, _ := range signer.Identities { + return id, nil + } + + return "", fmt.Errorf("No identity found in public key") +} + +// MD5Check validates the integrity of a RPM package file read from the given +// io.Reader. An MD5 checksum is computed for the package payload and compared +// with the checksum value specified in the package header. +// +// If validation succeeds, nil is returned. If validation fails, +// ErrMD5ValidationFailed is returned. +// +// This function is an expensive operation which reads the entire package file. +func MD5Check(r io.Reader) error { + // read signature header + sigheader, err := rpmReadSigHeader(r) + if err != nil { + return err + } + + // get expected payload size + payloadSize := sigheader.Indexes.IntByTag(RPMSIGTAG_SIZE) + if payloadSize == 0 { + return fmt.Errorf("RPMSIGTAG_SIZE tag not found in signature header") + } + + // get expected payload md5 sum + sigmd5 := sigheader.Indexes.BytesByTag(RPMSIGTAG_MD5) + if sigmd5 == nil { + return fmt.Errorf("RPMSIGTAG_MD5 tag not found in signature header") + } + + // compute payload sum + h := md5.New() + if n, err := io.Copy(h, r); err != nil { + return fmt.Errorf("Error reading payload: %v", err) + } else if n != payloadSize { + return ErrMD5ValidationFailed + } + + // compare sums + payloadmd5 := h.Sum(nil) + if !bytes.Equal(payloadmd5, sigmd5) { + return ErrMD5ValidationFailed + } + + return nil +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/header.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/header.go new file mode 100644 index 00000000000..70885f72714 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/header.go @@ -0,0 +1,291 @@ +package rpm + +import ( + "bytes" + "encoding/binary" + "fmt" + "io" + "math" +) + +// A Header stores metadata about a rpm package. +type Header struct { + Version int + IndexCount int + Length int + Indexes IndexEntries + Start int + End int +} + +// Headers is an array of Header structs. +type Headers []Header + +// Predefined sizing constraints. +const ( + // MAX_HEADER_SIZE is the maximum allowable header size in bytes (32 MB). + MAX_HEADER_SIZE = 33554432 +) + +// Predefined header errors. +var ( + // ErrBadHeaderLength indicates that the read header section is not the + // expected length. + ErrBadHeaderLength = fmt.Errorf("RPM header section is incorrect length") + + // ErrNotHeader indicates that the read header section does start with the + // expected descriptor. + ErrNotHeader = fmt.Errorf("invalid RPM header descriptor") + + // ErrBadStoreLength indicates that the read header store section is not the + // expected length. + ErrBadStoreLength = fmt.Errorf("header value store is incorrect length") +) + +// Predefined header index errors. +var ( + // ErrBadIndexCount indicates that number of indexes given in the read + // header would exceed the actual size of the header. + ErrBadIndexCount = fmt.Errorf("index count exceeds header size") + + // ErrBadIndexLength indicates that the read header index section is not the + // expected length. + ErrBadIndexLength = fmt.Errorf("index section is incorrect length") + + // ErrIndexOutOfRange indicates that the read header index would exceed the + // range of the header. + ErrIndexOutOfRange = fmt.Errorf("index is out of range") + + // ErrBadIndexType indicates that the read index contains a value of an + // unsupported data type. + ErrBadIndexType = fmt.Errorf("unknown index data type") + + // ErrBadIndexValueCount indicates that the read index value would exceed + // the range of the header store section. + ErrBadIndexValueCount = fmt.Errorf("index value count is out of range") +) + +// ReadPackageHeader reads an RPM package file header structure from the given +// io.Reader. +// +// This function should only be used if you intend to read a package header +// structure in isolation. +func ReadPackageHeader(r io.Reader) (*Header, error) { + // read the "header structure header" + header := make([]byte, 16) + n, err := r.Read(header) + if err != nil { + return nil, err + } + + if n != 16 { + return nil, ErrBadHeaderLength + } + + // check magic number + if 0 != bytes.Compare(header[:3], []byte{0x8E, 0xAD, 0xE8}) { + return nil, ErrNotHeader + } + + // translate header + h := &Header{ + Version: int(header[3]), + IndexCount: int(binary.BigEndian.Uint32(header[8:12])), + Length: int(binary.BigEndian.Uint32(header[12:16])), + } + + // make sure header size is in range + if h.Length > MAX_HEADER_SIZE { + return nil, ErrBadHeaderLength + } + + // Ensure index count is in range + // This test is not entirely precise as h.Length also includes the value + // store. It should at least help eliminate excessive buffer allocations for + // corrupted length values in the > h.Length ranges. + if h.IndexCount*16 > h.Length { + return nil, ErrBadIndexCount + } + + h.Indexes = make(IndexEntries, h.IndexCount) + + // read indexes + indexLength := 16 * h.IndexCount + indexes := make([]byte, indexLength) + n, err = r.Read(indexes) + if err != nil { + return nil, err + } + + if n != indexLength { + return nil, ErrBadIndexLength + } + + for x := 0; x < h.IndexCount; x++ { + o := 16 * x + index := IndexEntry{ + Tag: int(binary.BigEndian.Uint32(indexes[o : o+4])), + Type: int(binary.BigEndian.Uint32(indexes[o+4 : o+8])), + Offset: int(binary.BigEndian.Uint32(indexes[o+8 : o+12])), + ItemCount: int(binary.BigEndian.Uint32(indexes[o+12 : o+16])), + } + + // validate index offset + if index.Offset >= h.Length { + return nil, ErrIndexOutOfRange + } + + // append + h.Indexes[x] = index + } + + // read the "store" + store := make([]byte, h.Length) + n, err = r.Read(store) + if err != nil { + return nil, err + } + + if n != h.Length { + return nil, ErrBadStoreLength + } + + // parse the value of each index from the store + for x := 0; x < h.IndexCount; x++ { + index := h.Indexes[x] + o := index.Offset + + if index.ItemCount == 0 { + return nil, ErrBadIndexValueCount + } + + switch index.Type { + case IndexDataTypeChar: + vals := make([]uint8, index.ItemCount) + for v := 0; v < index.ItemCount; v++ { + if o >= len(store) { + return nil, fmt.Errorf("uint8 value for index %d is out of range", x+1) + } + + vals[v] = uint8(store[o]) + o += 1 + } + + index.Value = vals + + case IndexDataTypeInt8: + vals := make([]int8, index.ItemCount) + for v := 0; v < index.ItemCount; v++ { + if o >= len(store) { + return nil, fmt.Errorf("int8 value for index %d is out of range", x+1) + } + + vals[v] = int8(store[o]) + o += 1 + } + + index.Value = vals + + case IndexDataTypeInt16: + vals := make([]int16, index.ItemCount) + for v := 0; v < index.ItemCount; v++ { + if o+2 > len(store) { + return nil, fmt.Errorf("int16 value for index %d is out of range", x+1) + } + + vals[v] = int16(binary.BigEndian.Uint16(store[o : o+2])) + o += 2 + } + + index.Value = vals + + case IndexDataTypeInt32: + vals := make([]int32, index.ItemCount) + for v := 0; v < index.ItemCount; v++ { + if o+4 > len(store) { + return nil, fmt.Errorf("int32 value for index %d is out of range", x+1) + } + + vals[v] = int32(binary.BigEndian.Uint32(store[o : o+4])) + o += 4 + } + + index.Value = vals + + case IndexDataTypeInt64: + vals := make([]int64, index.ItemCount) + for v := 0; v < index.ItemCount; v++ { + if o+8 > len(store) { + return nil, fmt.Errorf("int64 value for index %d is out of range", x+1) + } + + vals[v] = int64(binary.BigEndian.Uint64(store[o : o+8])) + o += 8 + } + + index.Value = vals + + case IndexDataTypeBinary: + if o+index.ItemCount > len(store) { + return nil, fmt.Errorf("[]byte value for index %d is out of range", x+1) + } + + b := make([]byte, index.ItemCount) + copy(b, store[o:o+index.ItemCount]) + + index.Value = b + + case IndexDataTypeString, IndexDataTypeStringArray, IndexDataTypeI8NString: + // allow atleast one byte per string + if o+index.ItemCount > len(store) { + return nil, fmt.Errorf("[]string value for index %d is out of range", x+1) + } + + vals := make([]string, index.ItemCount) + + for s := 0; s < index.ItemCount; s++ { + // calculate string length + var j int + for j = 0; (o+j) < len(store) && store[o+j] != 0; j++ { + } + + if j == len(store) { + return nil, fmt.Errorf("string value for index %d is out of range", x+1) + } + + vals[s] = string(store[o : o+j]) + o += j + 1 + } + + index.Value = vals + + case IndexDataTypeNull: + // nothing to do here + + default: + // unknown data type + return nil, ErrBadIndexType + } + + // save in array + h.Indexes[x] = index + } + + // calculate location of the end of the header by padding to a multiple of 8 + o := 8 - int(math.Mod(float64(h.Length), 8)) + + // seek to the end of the header + if o > 0 && o < 8 { + pad := make([]byte, o) + n, err = r.Read(pad) + if err != nil { + return nil, fmt.Errorf("Error seeking beyond header padding of %d bytes: %v", o, err) + } + + if n != o { + return nil, fmt.Errorf("Error seeking beyond header padding of %d bytes: only %d bytes returned", o, n) + } + } + + return h, nil +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/index.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/index.go new file mode 100644 index 00000000000..f7cd861fecd --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/index.go @@ -0,0 +1,159 @@ +package rpm + +import ( + "time" +) + +// Header index value data types. +const ( + IndexDataTypeNull int = iota + IndexDataTypeChar + IndexDataTypeInt8 + IndexDataTypeInt16 + IndexDataTypeInt32 + IndexDataTypeInt64 + IndexDataTypeString + IndexDataTypeBinary + IndexDataTypeStringArray + IndexDataTypeI8NString +) + +// An IndexEntry is a rpm key/value tag stored in the package header. +type IndexEntry struct { + Tag int + Type int + Offset int + ItemCount int + Value interface{} +} + +// IndexEntries is an array of IndexEntry structs. +type IndexEntries []IndexEntry + +// IndexByTag returns a pointer to an IndexEntry with the given tag ID or nil if +// the tag is not found. +func (c IndexEntries) IndexByTag(tag int) *IndexEntry { + for _, e := range c { + if e.Tag == tag { + return &e + } + } + + return nil +} + +// StringByTag returns the string value of an IndexEntry or an empty string if +// the tag is not found or has no value. +func (c IndexEntries) StringByTag(tag int) string { + i := c.IndexByTag(tag) + if i == nil || i.Value == nil { + return "" + } + + s := i.Value.([]string) + + return s[0] +} + +// StringsByTag returns the slice of string values of an IndexEntry or nil if +// the tag is not found or has no value. +func (c IndexEntries) StringsByTag(tag int) []string { + i := c.IndexByTag(tag) + if i == nil || i.Value == nil { + return nil + } + + return i.Value.([]string) +} + +// IntsByTag returns the int64 values of an IndexEntry or nil if the tag is not +// found or has no value. Values with a lower range (E.g. int8) are cast as an +// int64. +func (c IndexEntries) IntsByTag(tag int) []int64 { + ix := c.IndexByTag(tag) + if ix != nil && ix.Value != nil { + vals := make([]int64, ix.ItemCount) + + for i := 0; i < int(ix.ItemCount); i++ { + switch ix.Type { + case IndexDataTypeChar, IndexDataTypeInt8: + vals[i] = int64(ix.Value.([]int8)[i]) + + case IndexDataTypeInt16: + vals[i] = int64(ix.Value.([]int16)[i]) + + case IndexDataTypeInt32: + vals[i] = int64(ix.Value.([]int32)[i]) + + case IndexDataTypeInt64: + vals[i] = ix.Value.([]int64)[i] + } + } + + return vals + } + + return nil +} + +// IntByTag returns the int64 value of an IndexEntry or 0 if the tag is not found +// or has no value. Values with a lower range (E.g. int8) are cast as an int64. +func (c IndexEntries) IntByTag(tag int) int64 { + i := c.IndexByTag(tag) + if i != nil && i.Value != nil { + switch i.Type { + case IndexDataTypeChar, IndexDataTypeInt8: + return int64(i.Value.([]int8)[0]) + + case IndexDataTypeInt16: + return int64(i.Value.([]int16)[0]) + + case IndexDataTypeInt32: + return int64(i.Value.([]int32)[0]) + + case IndexDataTypeInt64: + return int64(i.Value.([]int64)[0]) + } + } + + return 0 +} + +// BytesByTag returns the raw value of an IndexEntry or nil if the tag is not +// found or has no value. +func (c IndexEntries) BytesByTag(tag int) []byte { + i := c.IndexByTag(tag) + if i == nil || i.Value == nil { + return nil + } + + return i.Value.([]byte) +} + +// TimesByTag returns the value of an IndexEntry as a slice of Go native +// timestamps or nil if the tag is not found or has no value. +func (c IndexEntries) TimesByTag(tag int) []time.Time { + ix := c.IndexByTag(tag) + + if ix == nil || ix.Value == nil { + return nil + } + + vals := make([]time.Time, ix.ItemCount) + for i := 0; i < ix.ItemCount; i++ { + vals[i] = time.Unix(int64(ix.Value.([]int32)[i]), 0) + } + + return vals +} + +// TimeByTag returns the value of an IndexEntry as a Go native timestamp or +// zero-time if the tag is not found or has no value. +func (c IndexEntries) TimeByTag(tag int) time.Time { + vals := c.TimesByTag(tag) + if vals == nil || len(vals) == 0 { + return time.Time{} + } + + return vals[0] +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/keyring.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/keyring.go new file mode 100644 index 00000000000..3e4a2c97020 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/keyring.go @@ -0,0 +1,55 @@ +package rpm + +import ( + "golang.org/x/crypto/openpgp" + "golang.org/x/crypto/openpgp/armor" + "io" + "os" +) + +// KeyRing reads a openpgp.KeyRing from the given io.Reader which may then be +// used to validate GPG keys in RPM packages. +func KeyRing(r io.Reader) (openpgp.KeyRing, error) { + // decode gpgkey file + p, err := armor.Decode(r) + if err != nil { + return nil, err + } + + // extract keys + return openpgp.ReadKeyRing(p.Body) +} + +// KeyRingFromFile reads a openpgp.KeyRing from the given file path which may +// then be used to validate GPG keys in RPM packages. +func KeyRingFromFile(path string) (openpgp.KeyRing, error) { + // open gpgkey file + f, err := os.Open(path) + if err != nil { + return nil, err + } + defer f.Close() + + // read keyring + return KeyRing(f) +} + +// KeyRingFromFiles reads a openpgp.KeyRing from the given file paths which may +// then be used to validate GPG keys in RPM packages. +// +// This function might typically be used to read all keys in /etc/pki/rpm-gpg. +func KeyRingFromFiles(files []string) (openpgp.KeyRing, error) { + keyring := make(openpgp.EntityList, 0) + for _, path := range files { + // read keyring in file + el, err := KeyRingFromFile(path) + if err != nil { + return nil, err + } + + // append keyring + keyring = append(keyring, el.(openpgp.EntityList)...) + } + + return keyring, nil +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/lead.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/lead.go new file mode 100644 index 00000000000..1ff726ddd41 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/lead.go @@ -0,0 +1,79 @@ +package rpm + +import ( + "bytes" + "encoding/binary" + "fmt" + "io" +) + +// A Lead is the deprecated lead section of an RPM file which is used in legacy +// RPM versions to store package metadata. +type Lead struct { + VersionMajor int + VersionMinor int + Name string + Type int + Architecture int + OperatingSystem int + SignatureType int +} + +// Predefined lead section errors. +var ( + // ErrBadLeadLength indicates that the read lead section is not the expected + // length. + ErrBadLeadLength = fmt.Errorf("RPM lead section is incorrect length") + + // ErrNotRPMFile indicates that the read file does not start with the + // expected descriptor. + ErrNotRPMFile = fmt.Errorf("RPM file descriptor is invalid") + + // ErrUnsupportedVersion indicates that the read lead section version is not + // currently supported. + ErrUnsupportedVersion = fmt.Errorf("unsupported RPM package version") +) + +// ReadPackageLead reads the deprecated lead section of an RPM file which is +// used in legacy RPM versions to store package metadata. +// +// This function should only be used if you intend to read a package lead in +// isolation. +func ReadPackageLead(r io.Reader) (*Lead, error) { + // read bytes + b := make([]byte, 96) + n, err := r.Read(b) + if err != nil { + return nil, err + } + + // check length + if n != 96 { + return nil, ErrBadLeadLength + } + + // check magic number + if 0 != bytes.Compare(b[:4], []byte{0xED, 0xAB, 0xEE, 0xDB}) { + return nil, ErrNotRPMFile + } + + // decode lead + lead := &Lead{ + VersionMajor: int(b[4]), + VersionMinor: int(b[5]), + Type: int(binary.BigEndian.Uint16(b[6:8])), + Architecture: int(binary.BigEndian.Uint16(b[8:10])), + Name: string(b[10:76]), + OperatingSystem: int(binary.BigEndian.Uint16(b[76:78])), + SignatureType: int(binary.BigEndian.Uint16(b[78:80])), + } + + // check version + if lead.VersionMajor < 3 || lead.VersionMajor > 4 { + return nil, ErrUnsupportedVersion + } + + // TODO: validate lead value ranges + + return lead, nil +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/packagefile.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/packagefile.go new file mode 100644 index 00000000000..966cbd36119 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/packagefile.go @@ -0,0 +1,387 @@ +package rpm + +import ( + "crypto/sha256" + "encoding/hex" + "fmt" + "io" + "io/ioutil" + "math" + "os" + "path/filepath" + "strings" + "time" +) + +// A PackageFile is an RPM package definition loaded directly from the pacakge +// file itself. +type PackageFile struct { + Lead Lead + Headers Headers + + path string + fileSize uint64 + fileTime time.Time +} + +// ReadPackageFile reads a rpm package file from a stream and returns a pointer +// to it. +func ReadPackageFile(r io.Reader) (*PackageFile, error) { + // See: http://www.rpm.org/max-rpm/s1-rpm-file-format-rpm-file-format.html + p := &PackageFile{} + + // read the deprecated "lead" + lead, err := ReadPackageLead(r) + if err != nil { + return nil, err + } + + p.Lead = *lead + + // read signature and header headers + offset := 96 + p.Headers = make(Headers, 2) + for i := 0; i < 2; i++ { + // parse header + h, err := ReadPackageHeader(r) + if err != nil { + return nil, fmt.Errorf("%v (v%d.%d)", err, lead.VersionMajor, lead.VersionMinor) + } + + // set start and end offsets + h.Start = offset + h.End = h.Start + 16 + (16 * h.IndexCount) + h.Length + offset = h.End + + // calculate location of the end of the header by padding to a multiple of 8 + pad := 8 - int(math.Mod(float64(h.Length), 8)) + if pad < 8 { + offset += pad + } + + // append + p.Headers[i] = *h + } + + return p, nil +} + +// OpenPackageFile reads a rpm package from the file systems and returns a pointer +// to it. +func OpenPackageFile(path string) (*PackageFile, error) { + // stat file + fi, err := os.Stat(path) + if err != nil { + return nil, err + } + + // open file + f, err := os.Open(path) + if err != nil { + return nil, err + } + defer f.Close() + + // read package content + p, err := ReadPackageFile(f) + if err != nil { + return nil, err + } + + // set file info + p.path = path + p.fileSize = uint64(fi.Size()) + p.fileTime = fi.ModTime() + + return p, nil +} + +// OpenPackageFiles reads all rpm packages with the .rpm suffix from the given +// directory on the file systems and returns a slice of pointers to the loaded +// packages. +func OpenPackageFiles(path string) ([]*PackageFile, error) { + // read directory + dir, err := ioutil.ReadDir(path) + if err != nil { + return nil, err + } + + // list *.rpm files + files := make([]string, 0) + for _, f := range dir { + if strings.HasSuffix(f.Name(), ".rpm") { + files = append(files, filepath.Join(path, f.Name())) + } + } + + // read packages + packages := make([]*PackageFile, len(files)) + for i, f := range files { + p, err := OpenPackageFile(f) + if err != nil { + return nil, err + } + + packages[i] = p + } + + return packages, nil +} + +// dependencies translates the given tag values into a slice of package +// relationships such as provides, conflicts, obsoletes and requires. +func (c *PackageFile) dependencies(nevrsTagId, flagsTagId, namesTagId, versionsTagId int) Dependencies { + // TODO: Implement NEVRS tags + + flgs := c.Headers[1].Indexes.IntsByTag(flagsTagId) + names := c.Headers[1].Indexes.StringsByTag(namesTagId) + vers := c.Headers[1].Indexes.StringsByTag(versionsTagId) + + deps := make(Dependencies, len(names)) + for i := 0; i < len(names); i++ { + deps[i] = NewDependency(int(flgs[i]), names[i], 0, vers[i], "") + } + + return deps +} + +// String returns the package identifier in the form +// '[name]-[version]-[release].[architecture]'. +func (c *PackageFile) String() string { + return fmt.Sprintf("%s-%s-%s.%s", c.Name(), c.Version(), c.Release(), c.Architecture()) +} + +// Path returns the path which was given to open a package file if it was opened +// with OpenPackageFile. +func (c *PackageFile) Path() string { + return c.path +} + +// FileTime returns the time at which the RPM was last modified if known. +func (c *PackageFile) FileTime() time.Time { + return c.fileTime +} + +// FileSize returns the size of the package file in bytes. +func (c *PackageFile) FileSize() uint64 { + return c.fileSize +} + +// Checksum computes and returns the SHA256 checksum (encoded in hexidecimal) of +// the package file. +func (c *PackageFile) Checksum() (string, error) { + if c.Path() == "" { + return "", fmt.Errorf("File not found") + } + + if f, err := os.Open(c.Path()); err != nil { + return "", err + } else { + defer f.Close() + + s := sha256.New() + if _, err := io.Copy(s, f); err != nil { + return "", err + } + + return hex.EncodeToString(s.Sum(nil)), nil + } +} + +// ChecksumType returns "sha256" +func (c *PackageFile) ChecksumType() string { + return "sha256" +} + +func (c *PackageFile) HeaderStart() uint64 { + return uint64(c.Headers[1].Start) +} + +func (c *PackageFile) HeaderEnd() uint64 { + return uint64(c.Headers[1].End) +} + +// For tag definitions, see: +// https://github.com/rpm-software-management/rpm/blob/master/lib/rpmtag.h#L61 + +func (c *PackageFile) Name() string { + return c.Headers[1].Indexes.StringByTag(1000) +} + +func (c *PackageFile) Version() string { + return c.Headers[1].Indexes.StringByTag(1001) +} + +func (c *PackageFile) Release() string { + return c.Headers[1].Indexes.StringByTag(1002) +} + +func (c *PackageFile) Epoch() int { + return int(c.Headers[1].Indexes.IntByTag(1003)) +} + +func (c *PackageFile) Requires() Dependencies { + return c.dependencies(5041, 1048, 1049, 1050) +} + +func (c *PackageFile) Provides() Dependencies { + return c.dependencies(5042, 1112, 1047, 1113) +} + +func (c *PackageFile) Conflicts() Dependencies { + return c.dependencies(5044, 1053, 1054, 1055) +} + +func (c *PackageFile) Obsoletes() Dependencies { + return c.dependencies(5043, 1114, 1090, 1115) +} + +// Files returns file information for each file that is installed by this RPM +// package. +func (c *PackageFile) Files() []FileInfo { + ixs := c.Headers[1].Indexes.IntsByTag(1116) + names := c.Headers[1].Indexes.StringsByTag(1117) + dirs := c.Headers[1].Indexes.StringsByTag(1118) + modes := c.Headers[1].Indexes.IntsByTag(1030) + sizes := c.Headers[1].Indexes.IntsByTag(1028) + times := c.Headers[1].Indexes.IntsByTag(1034) + owners := c.Headers[1].Indexes.StringsByTag(1039) + groups := c.Headers[1].Indexes.StringsByTag(1040) + + files := make([]FileInfo, len(names)) + for i := 0; i < len(names); i++ { + files[i] = FileInfo{ + name: dirs[ixs[i]] + names[i], + mode: os.FileMode(modes[i]), + size: sizes[i], + modTime: time.Unix(times[i], 0), + owner: owners[i], + group: groups[i], + } + } + + return files +} + +func (c *PackageFile) Summary() string { + return strings.Join(c.Headers[1].Indexes.StringsByTag(1004), "\n") +} + +func (c *PackageFile) Description() string { + return strings.Join(c.Headers[1].Indexes.StringsByTag(1005), "\n") +} + +func (c *PackageFile) BuildTime() time.Time { + return c.Headers[1].Indexes.TimeByTag(1006) +} + +func (c *PackageFile) BuildHost() string { + return c.Headers[1].Indexes.StringByTag(1007) +} + +func (c *PackageFile) InstallTime() time.Time { + return c.Headers[1].Indexes.TimeByTag(1008) +} + +// Size specifies the disk space consumed by installation of the package. +func (c *PackageFile) Size() uint64 { + return uint64(c.Headers[1].Indexes.IntByTag(1009)) +} + +// ArchiveSize specifies the size of the archived payload of the package in +// bytes. +func (c *PackageFile) ArchiveSize() uint64 { + if i := uint64(c.Headers[0].Indexes.IntByTag(1007)); i > 0 { + return i + } + + return uint64(c.Headers[1].Indexes.IntByTag(1046)) +} + +func (c *PackageFile) Distribution() string { + return c.Headers[1].Indexes.StringByTag(1010) +} + +func (c *PackageFile) Vendor() string { + return c.Headers[1].Indexes.StringByTag(1011) +} + +func (c *PackageFile) GIFImage() []byte { + return c.Headers[1].Indexes.BytesByTag(1012) +} + +func (c *PackageFile) XPMImage() []byte { + return c.Headers[1].Indexes.BytesByTag(1013) +} + +func (c *PackageFile) License() string { + return c.Headers[1].Indexes.StringByTag(1014) +} + +func (c *PackageFile) Packager() string { + return c.Headers[1].Indexes.StringByTag(1015) +} + +func (c *PackageFile) Groups() []string { + return c.Headers[1].Indexes.StringsByTag(1016) +} + +func (c *PackageFile) ChangeLog() []string { + return c.Headers[1].Indexes.StringsByTag(1017) +} + +func (c *PackageFile) Source() []string { + return c.Headers[1].Indexes.StringsByTag(1018) +} + +func (c *PackageFile) Patch() []string { + return c.Headers[1].Indexes.StringsByTag(1019) +} + +func (c *PackageFile) URL() string { + return c.Headers[1].Indexes.StringByTag(1020) +} + +func (c *PackageFile) OperatingSystem() string { + return c.Headers[1].Indexes.StringByTag(1021) +} + +func (c *PackageFile) Architecture() string { + return c.Headers[1].Indexes.StringByTag(1022) +} + +func (c *PackageFile) PreInstallScript() string { + return c.Headers[1].Indexes.StringByTag(1023) +} + +func (c *PackageFile) PostInstallScript() string { + return c.Headers[1].Indexes.StringByTag(1024) +} + +func (c *PackageFile) PreUninstallScript() string { + return c.Headers[1].Indexes.StringByTag(1025) +} + +func (c *PackageFile) PostUninstallScript() string { + return c.Headers[1].Indexes.StringByTag(1026) +} + +func (c *PackageFile) OldFilenames() []string { + return c.Headers[1].Indexes.StringsByTag(1027) +} + +func (c *PackageFile) Icon() []byte { + return c.Headers[1].Indexes.BytesByTag(1043) +} + +func (c *PackageFile) SourceRPM() string { + return c.Headers[1].Indexes.StringByTag(1044) +} + +func (c *PackageFile) RPMVersion() string { + return c.Headers[1].Indexes.StringByTag(1064) +} + +func (c *PackageFile) Platform() string { + return c.Headers[1].Indexes.StringByTag(1132) +} diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/tags.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/tags.go new file mode 100644 index 00000000000..6328bf43461 --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/tags.go @@ -0,0 +1,355 @@ +package rpm + +// See: +// https://github.com/rpm-software-management/rpm/blob/master/lib/rpmtag.h + +// Tags for the signature header. +const ( + RPMSIGTAG_SIZE = 1000 + RPMSIGTAG_LEMD5_1 = 1001 + RPMSIGTAG_PGP = 1002 + RPMSIGTAG_LEMD5_2 = 1003 + RPMSIGTAG_MD5 = 1004 + RPMSIGTAG_GPG = 1005 + RPMSIGTAG_PGP5 = 1006 + RPMSIGTAG_PAYLOADSIZE = 1007 + RPMSIGTAG_RESERVEDSPACE = 1008 + RPMSIGTAG_BADSHA1_1 = RPMTAG_BADSHA1_1 + RPMSIGTAG_BADSHA1_2 = RPMTAG_BADSHA1_2 + RPMSIGTAG_SHA1 = RPMTAG_SHA1HEADER + RPMSIGTAG_DSA = RPMTAG_DSAHEADER + RPMSIGTAG_RSA = RPMTAG_RSAHEADER + RPMSIGTAG_LONGSIZE = RPMTAG_LONGSIGSIZE + RPMSIGTAG_LONGARCHIVESIZE = RPMTAG_LONGARCHIVESIZE +) + +// Tags for the header header. +const ( + RPMTAG_NOT_FOUND = -1 + + RPMTAG_HEADERIMAGE = 61 + RPMTAG_HEADERSIGNATURES = 62 + RPMTAG_HEADERIMMUTABLE = 63 + RPMTAG_HEADERREGIONS = 64 + RPMTAG_HEADERI18NTABLE = 100 + + RPMTAG_SIG_BASE = 256 + RPMTAG_SIGSIZE = 257 + RPMTAG_SIGLEMD5_1 = 258 + RPMTAG_SIGPGP = 259 + RPMTAG_SIGLEMD5_2 = 260 + RPMTAG_SIGMD5 = 261 + RPMTAG_PKGID = RPMTAG_SIGMD5 + RPMTAG_SIGGPG = 262 + RPMTAG_SIGPGP5 = 263 + + RPMTAG_BADSHA1_1 = 264 + RPMTAG_BADSHA1_2 = 265 + RPMTAG_PUBKEYS = 266 + RPMTAG_DSAHEADER = 267 + RPMTAG_RSAHEADER = 268 + RPMTAG_SHA1HEADER = 269 + RPMTAG_HDRID = RPMTAG_SHA1HEADER + RPMTAG_LONGSIGSIZE = 270 + RPMTAG_LONGARCHIVESIZE = 271 + + RPMTAG_NAME = 1000 + RPMTAG_N = RPMTAG_NAME + RPMTAG_VERSION = 1001 + RPMTAG_V = RPMTAG_VERSION + RPMTAG_RELEASE = 1002 + RPMTAG_R = RPMTAG_RELEASE + RPMTAG_EPOCH = 1003 + RPMTAG_E = RPMTAG_EPOCH + RPMTAG_SUMMARY = 1004 + RPMTAG_DESCRIPTION = 1005 + RPMTAG_BUILDTIME = 1006 + RPMTAG_BUILDHOST = 1007 + RPMTAG_INSTALLTIME = 1008 + RPMTAG_SIZE = 1009 + RPMTAG_DISTRIBUTION = 1010 + RPMTAG_VENDOR = 1011 + RPMTAG_GIF = 1012 + RPMTAG_XPM = 1013 + RPMTAG_LICENSE = 1014 + RPMTAG_PACKAGER = 1015 + RPMTAG_GROUP = 1016 + RPMTAG_CHANGELOG = 1017 + RPMTAG_SOURCE = 1018 + RPMTAG_PATCH = 1019 + RPMTAG_URL = 1020 + RPMTAG_OS = 1021 + RPMTAG_ARCH = 1022 + RPMTAG_PREIN = 1023 + RPMTAG_POSTIN = 1024 + RPMTAG_PREUN = 1025 + RPMTAG_POSTUN = 1026 + RPMTAG_OLDFILENAMES = 1027 + RPMTAG_FILESIZES = 1028 + RPMTAG_FILESTATES = 1029 + RPMTAG_FILEMODES = 1030 + RPMTAG_FILEUIDS = 1031 + RPMTAG_FILEGIDS = 1032 + RPMTAG_FILERDEVS = 1033 + RPMTAG_FILEMTIMES = 1034 + RPMTAG_FILEDIGESTS = 1035 + RPMTAG_FILEMD5S = RPMTAG_FILEDIGESTS + RPMTAG_FILELINKTOS = 1036 + RPMTAG_FILEFLAGS = 1037 + RPMTAG_ROOT = 1038 + RPMTAG_FILEUSERNAME = 1039 + RPMTAG_FILEGROUPNAME = 1040 + RPMTAG_EXCLUDE = 1041 + RPMTAG_EXCLUSIVE = 1042 + RPMTAG_ICON = 1043 + RPMTAG_SOURCERPM = 1044 + RPMTAG_FILEVERIFYFLAGS = 1045 + RPMTAG_ARCHIVESIZE = 1046 + RPMTAG_PROVIDENAME = 1047 + RPMTAG_PROVIDES = RPMTAG_PROVIDENAME + RPMTAG_P = RPMTAG_PROVIDENAME + RPMTAG_REQUIREFLAGS = 1048 + RPMTAG_REQUIRENAME = 1049 + RPMTAG_REQUIRES = RPMTAG_REQUIRENAME + RPMTAG_REQUIREVERSION = 1050 + RPMTAG_NOSOURCE = 1051 + RPMTAG_NOPATCH = 1052 + RPMTAG_CONFLICTFLAGS = 1053 + RPMTAG_CONFLICTNAME = 1054 + RPMTAG_CONFLICTS = RPMTAG_CONFLICTNAME + RPMTAG_C = RPMTAG_CONFLICTNAME + RPMTAG_CONFLICTVERSION = 1055 + RPMTAG_DEFAULTPREFIX = 1056 + RPMTAG_BUILDROOT = 1057 + RPMTAG_INSTALLPREFIX = 1058 + RPMTAG_EXCLUDEARCH = 1059 + RPMTAG_EXCLUDEOS = 1060 + RPMTAG_EXCLUSIVEARCH = 1061 + RPMTAG_EXCLUSIVEOS = 1062 + RPMTAG_AUTOREQPROV = 1063 + RPMTAG_RPMVERSION = 1064 + RPMTAG_TRIGGERSCRIPTS = 1065 + RPMTAG_TRIGGERNAME = 1066 + RPMTAG_TRIGGERVERSION = 1067 + RPMTAG_TRIGGERFLAGS = 1068 + RPMTAG_TRIGGERINDEX = 1069 + RPMTAG_VERIFYSCRIPT = 1079 + RPMTAG_CHANGELOGTIME = 1080 + RPMTAG_CHANGELOGNAME = 1081 + RPMTAG_CHANGELOGTEXT = 1082 + RPMTAG_BROKENMD5 = 1083 + RPMTAG_PREREQ = 1084 + RPMTAG_PREINPROG = 1085 + RPMTAG_POSTINPROG = 1086 + RPMTAG_PREUNPROG = 1087 + RPMTAG_POSTUNPROG = 1088 + RPMTAG_BUILDARCHS = 1089 + RPMTAG_OBSOLETENAME = 1090 + RPMTAG_OBSOLETES = RPMTAG_OBSOLETENAME + RPMTAG_O = RPMTAG_OBSOLETENAME + RPMTAG_VERIFYSCRIPTPROG = 1091 + RPMTAG_TRIGGERSCRIPTPROG = 1092 + RPMTAG_DOCDIR = 1093 + RPMTAG_COOKIE = 1094 + RPMTAG_FILEDEVICES = 1095 + RPMTAG_FILEINODES = 1096 + RPMTAG_FILELANGS = 1097 + RPMTAG_PREFIXES = 1098 + RPMTAG_INSTPREFIXES = 1099 + RPMTAG_TRIGGERIN = 1100 + RPMTAG_TRIGGERUN = 1101 + RPMTAG_TRIGGERPOSTUN = 1102 + RPMTAG_AUTOREQ = 1103 + RPMTAG_AUTOPROV = 1104 + RPMTAG_CAPABILITY = 1105 + RPMTAG_SOURCEPACKAGE = 1106 + RPMTAG_OLDORIGFILENAMES = 1107 + RPMTAG_BUILDPREREQ = 1108 + RPMTAG_BUILDREQUIRES = 1109 + RPMTAG_BUILDCONFLICTS = 1110 + RPMTAG_BUILDMACROS = 1111 + RPMTAG_PROVIDEFLAGS = 1112 + RPMTAG_PROVIDEVERSION = 1113 + RPMTAG_OBSOLETEFLAGS = 1114 + RPMTAG_OBSOLETEVERSION = 1115 + RPMTAG_DIRINDEXES = 1116 + RPMTAG_BASENAMES = 1117 + RPMTAG_DIRNAMES = 1118 + RPMTAG_ORIGDIRINDEXES = 1119 + RPMTAG_ORIGBASENAMES = 1120 + RPMTAG_ORIGDIRNAMES = 1121 + RPMTAG_OPTFLAGS = 1122 + RPMTAG_DISTURL = 1123 + RPMTAG_PAYLOADFORMAT = 1124 + RPMTAG_PAYLOADCOMPRESSOR = 1125 + RPMTAG_PAYLOADFLAGS = 1126 + RPMTAG_INSTALLCOLOR = 1127 + RPMTAG_INSTALLTID = 1128 + RPMTAG_REMOVETID = 1129 + RPMTAG_SHA1RHN = 1130 + RPMTAG_RHNPLATFORM = 1131 + RPMTAG_PLATFORM = 1132 + RPMTAG_PATCHESNAME = 1133 + RPMTAG_PATCHESFLAGS = 1134 + RPMTAG_PATCHESVERSION = 1135 + RPMTAG_CACHECTIME = 1136 + RPMTAG_CACHEPKGPATH = 1137 + RPMTAG_CACHEPKGSIZE = 1138 + RPMTAG_CACHEPKGMTIME = 1139 + RPMTAG_FILECOLORS = 1140 + RPMTAG_FILECLASS = 1141 + RPMTAG_CLASSDICT = 1142 + RPMTAG_FILEDEPENDSX = 1143 + RPMTAG_FILEDEPENDSN = 1144 + RPMTAG_DEPENDSDICT = 1145 + RPMTAG_SOURCEPKGID = 1146 + RPMTAG_FILECONTEXTS = 1147 + RPMTAG_FSCONTEXTS = 1148 + RPMTAG_RECONTEXTS = 1149 + RPMTAG_POLICIES = 1150 + RPMTAG_PRETRANS = 1151 + RPMTAG_POSTTRANS = 1152 + RPMTAG_PRETRANSPROG = 1153 + RPMTAG_POSTTRANSPROG = 1154 + RPMTAG_DISTTAG = 1155 + RPMTAG_OLDSUGGESTSNAME = 1156 + RPMTAG_OLDSUGGESTS = RPMTAG_OLDSUGGESTSNAME + RPMTAG_OLDSUGGESTSVERSION = 1157 + RPMTAG_OLDSUGGESTSFLAGS = 1158 + RPMTAG_OLDENHANCESNAME = 1159 + RPMTAG_OLDENHANCES = RPMTAG_OLDENHANCESNAME + RPMTAG_OLDENHANCESVERSION = 1160 + RPMTAG_OLDENHANCESFLAGS = 1161 + RPMTAG_PRIORITY = 1162 + RPMTAG_CVSID = 1163 + RPMTAG_SVNID = RPMTAG_CVSID + RPMTAG_BLINKPKGID = 1164 + RPMTAG_BLINKHDRID = 1165 + RPMTAG_BLINKNEVRA = 1166 + RPMTAG_FLINKPKGID = 1167 + RPMTAG_FLINKHDRID = 1168 + RPMTAG_FLINKNEVRA = 1169 + RPMTAG_PACKAGEORIGIN = 1170 + RPMTAG_TRIGGERPREIN = 1171 + RPMTAG_BUILDSUGGESTS = 1172 + RPMTAG_BUILDENHANCES = 1173 + RPMTAG_SCRIPTSTATES = 1174 + RPMTAG_SCRIPTMETRICS = 1175 + RPMTAG_BUILDCPUCLOCK = 1176 + RPMTAG_FILEDIGESTALGOS = 1177 + RPMTAG_VARIANTS = 1178 + RPMTAG_XMAJOR = 1179 + RPMTAG_XMINOR = 1180 + RPMTAG_REPOTAG = 1181 + RPMTAG_KEYWORDS = 1182 + RPMTAG_BUILDPLATFORMS = 1183 + RPMTAG_PACKAGECOLOR = 1184 + RPMTAG_PACKAGEPREFCOLOR = 1185 + RPMTAG_XATTRSDICT = 1186 + RPMTAG_FILEXATTRSX = 1187 + RPMTAG_DEPATTRSDICT = 1188 + RPMTAG_CONFLICTATTRSX = 1189 + RPMTAG_OBSOLETEATTRSX = 1190 + RPMTAG_PROVIDEATTRSX = 1191 + RPMTAG_REQUIREATTRSX = 1192 + RPMTAG_BUILDPROVIDES = 1193 + RPMTAG_BUILDOBSOLETES = 1194 + RPMTAG_DBINSTANCE = 1195 + RPMTAG_NVRA = 1196 + + RPMTAG_FILENAMES = 5000 + RPMTAG_FILEPROVIDE = 5001 + RPMTAG_FILEREQUIRE = 5002 + RPMTAG_FSNAMES = 5003 + RPMTAG_FSSIZES = 5004 + RPMTAG_TRIGGERCONDS = 5005 + RPMTAG_TRIGGERTYPE = 5006 + RPMTAG_ORIGFILENAMES = 5007 + RPMTAG_LONGFILESIZES = 5008 + RPMTAG_LONGSIZE = 5009 + RPMTAG_FILECAPS = 5010 + RPMTAG_FILEDIGESTALGO = 5011 + RPMTAG_BUGURL = 5012 + RPMTAG_EVR = 5013 + RPMTAG_NVR = 5014 + RPMTAG_NEVR = 5015 + RPMTAG_NEVRA = 5016 + RPMTAG_HEADERCOLOR = 5017 + RPMTAG_VERBOSE = 5018 + RPMTAG_EPOCHNUM = 5019 + RPMTAG_PREINFLAGS = 5020 + RPMTAG_POSTINFLAGS = 5021 + RPMTAG_PREUNFLAGS = 5022 + RPMTAG_POSTUNFLAGS = 5023 + RPMTAG_PRETRANSFLAGS = 5024 + RPMTAG_POSTTRANSFLAGS = 5025 + RPMTAG_VERIFYSCRIPTFLAGS = 5026 + RPMTAG_TRIGGERSCRIPTFLAGS = 5027 + RPMTAG_COLLECTIONS = 5029 + RPMTAG_POLICYNAMES = 5030 + RPMTAG_POLICYTYPES = 5031 + RPMTAG_POLICYTYPESINDEXES = 5032 + RPMTAG_POLICYFLAGS = 5033 + RPMTAG_VCS = 5034 + RPMTAG_ORDERNAME = 5035 + RPMTAG_ORDERVERSION = 5036 + RPMTAG_ORDERFLAGS = 5037 + RPMTAG_MSSFMANIFEST = 5038 + RPMTAG_MSSFDOMAIN = 5039 + RPMTAG_INSTFILENAMES = 5040 + RPMTAG_REQUIRENEVRS = 5041 + RPMTAG_PROVIDENEVRS = 5042 + RPMTAG_OBSOLETENEVRS = 5043 + RPMTAG_CONFLICTNEVRS = 5044 + RPMTAG_FILENLINKS = 5045 + RPMTAG_RECOMMENDNAME = 5046 + RPMTAG_RECOMMENDS = RPMTAG_RECOMMENDNAME + RPMTAG_RECOMMENDVERSION = 5047 + RPMTAG_RECOMMENDFLAGS = 5048 + RPMTAG_SUGGESTNAME = 5049 + RPMTAG_SUGGESTS = RPMTAG_SUGGESTNAME + RPMTAG_SUGGESTVERSION = 5050 + RPMTAG_SUGGESTFLAGS = 5051 + RPMTAG_SUPPLEMENTNAME = 5052 + RPMTAG_SUPPLEMENTS = RPMTAG_SUPPLEMENTNAME + RPMTAG_SUPPLEMENTVERSION = 5053 + RPMTAG_SUPPLEMENTFLAGS = 5054 + RPMTAG_ENHANCENAME = 5055 + RPMTAG_ENHANCES = RPMTAG_ENHANCENAME + RPMTAG_ENHANCEVERSION = 5056 + RPMTAG_ENHANCEFLAGS = 5057 + RPMTAG_RECOMMENDNEVRS = 5058 + RPMTAG_SUGGESTNEVRS = 5059 + RPMTAG_SUPPLEMENTNEVRS = 5060 + RPMTAG_ENHANCENEVRS = 5061 + RPMTAG_ENCODING = 5062 + RPMTAG_FILETRIGGERIN = 5063 + RPMTAG_FILETRIGGERUN = 5064 + RPMTAG_FILETRIGGERPOSTUN = 5065 + RPMTAG_FILETRIGGERSCRIPTS = 5066 + RPMTAG_FILETRIGGERSCRIPTPROG = 5067 + RPMTAG_FILETRIGGERSCRIPTFLAGS = 5068 + RPMTAG_FILETRIGGERNAME = 5069 + RPMTAG_FILETRIGGERINDEX = 5070 + RPMTAG_FILETRIGGERVERSION = 5071 + RPMTAG_FILETRIGGERFLAGS = 5072 + RPMTAG_TRANSFILETRIGGERIN = 5073 + RPMTAG_TRANSFILETRIGGERUN = 5074 + RPMTAG_TRANSFILETRIGGERPOSTUN = 5075 + RPMTAG_TRANSFILETRIGGERSCRIPTS = 5076 + RPMTAG_TRANSFILETRIGGERSCRIPTPROG = 5077 + RPMTAG_TRANSFILETRIGGERSCRIPTFLAGS = 5078 + RPMTAG_TRANSFILETRIGGERNAME = 5079 + RPMTAG_TRANSFILETRIGGERINDEX = 5080 + RPMTAG_TRANSFILETRIGGERVERSION = 5081 + RPMTAG_TRANSFILETRIGGERFLAGS = 5082 + RPMTAG_REMOVEPATHPOSTFIXES = 5083 + RPMTAG_FILETRIGGERPRIORITIES = 5084 + RPMTAG_TRANSFILETRIGGERPRIORITIES = 5085 + RPMTAG_FILETRIGGERCONDS = 5086 + RPMTAG_FILETRIGGERTYPE = 5087 + RPMTAG_TRANSFILETRIGGERCONDS = 5088 + RPMTAG_TRANSFILETRIGGERTYPE = 5089 + RPMTAG_FILESIGNATURES = 5090 + RPMTAG_FILESIGNATURELENGTH = 5091 +) diff --git a/dev-tools/vendor/github.com/cavaliercoder/go-rpm/version.go b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/version.go new file mode 100644 index 00000000000..62856ea7c3c --- /dev/null +++ b/dev-tools/vendor/github.com/cavaliercoder/go-rpm/version.go @@ -0,0 +1,138 @@ +package rpm + +import ( + "math" + "regexp" + "strings" + "unicode" +) + +// alphanumPattern is a regular expression to match all sequences of numeric +// characters or alphanumeric characters. +var alphanumPattern = regexp.MustCompile("([a-zA-Z]+)|([0-9]+)") + +// PackageVersion is an interface which holds version information for a single +// package version. +type PackageVersion interface { + Name() string + Version() string + Release() string + Epoch() int +} + +// VersionCompare compares the version details of two packages. Versions are +// compared by Epoch, Version and Release in descending order of precedence. +// +// If a is more recent than b, 1 is returned. If a is less recent than b, -1 is +// returned. If a and b are equal, 0 is returned. +// +// This function does not consider if the two packages have the same name or if +// either package has been made obsolete by the other. +func VersionCompare(a PackageVersion, b PackageVersion) int { + // compare nils + if a == nil && b == nil { + return 0 + } else if a == nil { + return -1 + } else if b == nil { + return 1 + } + + // compare epoch + ae := a.Epoch() + be := b.Epoch() + if ae != be { + if ae > be { + return 1 + } else { + return -1 + } + } + + // compare version + if rc := rpmvercmp(a.Version(), b.Version()); rc != 0 { + return rc + } + + // compare release + return rpmvercmp(a.Release(), b.Release()) +} + +// LatestPackage returns the package with the highest version in the given slice +// of PackageVersions. +func LatestPackage(v ...PackageVersion) PackageVersion { + var latest PackageVersion + for _, p := range v { + if 1 == VersionCompare(p, latest) { + latest = p + } + } + + return latest +} + +// rpmcmpver compares two version or release strings. +// +// For the original C implementation, see: +// https://github.com/rpm-software-management/rpm/blob/master/lib/rpmvercmp.c#L16 +func rpmvercmp(a, b string) int { + // shortcut for equality + if a == b { + return 0 + } + + // get alpha/numeric segements + segsa := alphanumPattern.FindAllString(a, -1) + segsb := alphanumPattern.FindAllString(b, -1) + segs := int(math.Min(float64(len(segsa)), float64(len(segsb)))) + + // TODO: handle tildes in rpmvercmp + + // compare each segment + for i := 0; i < segs; i++ { + a := segsa[i] + b := segsb[i] + + if unicode.IsNumber([]rune(a)[0]) { + // numbers are always greater than alphas + if !unicode.IsNumber([]rune(b)[0]) { + // a is numeric, b is alpha + return 1 + } + + // trim leading zeros + a = strings.TrimLeft(a, "0") + b = strings.TrimLeft(b, "0") + + // longest string wins without further comparison + if len(a) > len(b) { + return 1 + } else if len(b) > len(a) { + return -1 + } + + } else if unicode.IsNumber([]rune(b)[0]) { + // a is alpha, b is numeric + return -1 + } + + // string compare + if a < b { + return -1 + } else if a > b { + return 1 + } + } + + // segments were all the same but separators must have been different + if len(segsa) == len(segsb) { + return 0 + } + + // whoever has the most segments wins + if len(segsa) > len(segsb) { + return 1 + } else { + return -1 + } +} diff --git a/dev-tools/vendor/golang.org/x/crypto/AUTHORS b/dev-tools/vendor/golang.org/x/crypto/AUTHORS new file mode 100644 index 00000000000..15167cd746c --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/AUTHORS @@ -0,0 +1,3 @@ +# This source code refers to The Go Authors for copyright purposes. +# The master list of authors is in the main Go distribution, +# visible at http://tip.golang.org/AUTHORS. diff --git a/dev-tools/vendor/golang.org/x/crypto/CONTRIBUTING.md b/dev-tools/vendor/golang.org/x/crypto/CONTRIBUTING.md new file mode 100644 index 00000000000..88dff59bc7d --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/CONTRIBUTING.md @@ -0,0 +1,31 @@ +# Contributing to Go + +Go is an open source project. + +It is the work of hundreds of contributors. We appreciate your help! + + +## Filing issues + +When [filing an issue](https://golang.org/issue/new), make sure to answer these five questions: + +1. What version of Go are you using (`go version`)? +2. What operating system and processor architecture are you using? +3. What did you do? +4. What did you expect to see? +5. What did you see instead? + +General questions should go to the [golang-nuts mailing list](https://groups.google.com/group/golang-nuts) instead of the issue tracker. +The gophers there will answer or ask you to file an issue if you've tripped over a bug. + +## Contributing code + +Please read the [Contribution Guidelines](https://golang.org/doc/contribute.html) +before sending patches. + +**We do not accept GitHub pull requests** +(we use [Gerrit](https://code.google.com/p/gerrit/) instead for code review). + +Unless otherwise noted, the Go source files are distributed under +the BSD-style license found in the LICENSE file. + diff --git a/dev-tools/vendor/golang.org/x/crypto/CONTRIBUTORS b/dev-tools/vendor/golang.org/x/crypto/CONTRIBUTORS new file mode 100644 index 00000000000..1c4577e9680 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/CONTRIBUTORS @@ -0,0 +1,3 @@ +# This source code was written by the Go contributors. +# The master list of contributors is in the main Go distribution, +# visible at http://tip.golang.org/CONTRIBUTORS. diff --git a/dev-tools/vendor/golang.org/x/crypto/LICENSE b/dev-tools/vendor/golang.org/x/crypto/LICENSE new file mode 100644 index 00000000000..6a66aea5eaf --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/LICENSE @@ -0,0 +1,27 @@ +Copyright (c) 2009 The Go Authors. All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are +met: + + * Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. + * Redistributions in binary form must reproduce the above +copyright notice, this list of conditions and the following disclaimer +in the documentation and/or other materials provided with the +distribution. + * Neither the name of Google Inc. nor the names of its +contributors may be used to endorse or promote products derived from +this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/dev-tools/vendor/golang.org/x/crypto/PATENTS b/dev-tools/vendor/golang.org/x/crypto/PATENTS new file mode 100644 index 00000000000..733099041f8 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/PATENTS @@ -0,0 +1,22 @@ +Additional IP Rights Grant (Patents) + +"This implementation" means the copyrightable works distributed by +Google as part of the Go project. + +Google hereby grants to You a perpetual, worldwide, non-exclusive, +no-charge, royalty-free, irrevocable (except as stated in this section) +patent license to make, have made, use, offer to sell, sell, import, +transfer and otherwise run, modify and propagate the contents of this +implementation of Go, where such license applies only to those patent +claims, both currently owned or controlled by Google and acquired in +the future, licensable by Google that are necessarily infringed by this +implementation of Go. This grant does not include claims that would be +infringed only as a consequence of further modification of this +implementation. If you or your agent or exclusive licensee institute or +order or agree to the institution of patent litigation against any +entity (including a cross-claim or counterclaim in a lawsuit) alleging +that this implementation of Go or any code incorporated within this +implementation of Go constitutes direct or contributory patent +infringement, or inducement of patent infringement, then any patent +rights granted to you under this License for this implementation of Go +shall terminate as of the date such litigation is filed. diff --git a/dev-tools/vendor/golang.org/x/crypto/README b/dev-tools/vendor/golang.org/x/crypto/README new file mode 100644 index 00000000000..f1e0cbf94e0 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/README @@ -0,0 +1,3 @@ +This repository holds supplementary Go cryptography libraries. + +To submit changes to this repository, see http://golang.org/doc/contribute.html. diff --git a/dev-tools/vendor/golang.org/x/crypto/cast5/cast5.go b/dev-tools/vendor/golang.org/x/crypto/cast5/cast5.go new file mode 100644 index 00000000000..0b4af37bdc2 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/cast5/cast5.go @@ -0,0 +1,526 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package cast5 implements CAST5, as defined in RFC 2144. CAST5 is a common +// OpenPGP cipher. +package cast5 // import "golang.org/x/crypto/cast5" + +import "errors" + +const BlockSize = 8 +const KeySize = 16 + +type Cipher struct { + masking [16]uint32 + rotate [16]uint8 +} + +func NewCipher(key []byte) (c *Cipher, err error) { + if len(key) != KeySize { + return nil, errors.New("CAST5: keys must be 16 bytes") + } + + c = new(Cipher) + c.keySchedule(key) + return +} + +func (c *Cipher) BlockSize() int { + return BlockSize +} + +func (c *Cipher) Encrypt(dst, src []byte) { + l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3]) + r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7]) + + l, r = r, l^f1(r, c.masking[0], c.rotate[0]) + l, r = r, l^f2(r, c.masking[1], c.rotate[1]) + l, r = r, l^f3(r, c.masking[2], c.rotate[2]) + l, r = r, l^f1(r, c.masking[3], c.rotate[3]) + + l, r = r, l^f2(r, c.masking[4], c.rotate[4]) + l, r = r, l^f3(r, c.masking[5], c.rotate[5]) + l, r = r, l^f1(r, c.masking[6], c.rotate[6]) + l, r = r, l^f2(r, c.masking[7], c.rotate[7]) + + l, r = r, l^f3(r, c.masking[8], c.rotate[8]) + l, r = r, l^f1(r, c.masking[9], c.rotate[9]) + l, r = r, l^f2(r, c.masking[10], c.rotate[10]) + l, r = r, l^f3(r, c.masking[11], c.rotate[11]) + + l, r = r, l^f1(r, c.masking[12], c.rotate[12]) + l, r = r, l^f2(r, c.masking[13], c.rotate[13]) + l, r = r, l^f3(r, c.masking[14], c.rotate[14]) + l, r = r, l^f1(r, c.masking[15], c.rotate[15]) + + dst[0] = uint8(r >> 24) + dst[1] = uint8(r >> 16) + dst[2] = uint8(r >> 8) + dst[3] = uint8(r) + dst[4] = uint8(l >> 24) + dst[5] = uint8(l >> 16) + dst[6] = uint8(l >> 8) + dst[7] = uint8(l) +} + +func (c *Cipher) Decrypt(dst, src []byte) { + l := uint32(src[0])<<24 | uint32(src[1])<<16 | uint32(src[2])<<8 | uint32(src[3]) + r := uint32(src[4])<<24 | uint32(src[5])<<16 | uint32(src[6])<<8 | uint32(src[7]) + + l, r = r, l^f1(r, c.masking[15], c.rotate[15]) + l, r = r, l^f3(r, c.masking[14], c.rotate[14]) + l, r = r, l^f2(r, c.masking[13], c.rotate[13]) + l, r = r, l^f1(r, c.masking[12], c.rotate[12]) + + l, r = r, l^f3(r, c.masking[11], c.rotate[11]) + l, r = r, l^f2(r, c.masking[10], c.rotate[10]) + l, r = r, l^f1(r, c.masking[9], c.rotate[9]) + l, r = r, l^f3(r, c.masking[8], c.rotate[8]) + + l, r = r, l^f2(r, c.masking[7], c.rotate[7]) + l, r = r, l^f1(r, c.masking[6], c.rotate[6]) + l, r = r, l^f3(r, c.masking[5], c.rotate[5]) + l, r = r, l^f2(r, c.masking[4], c.rotate[4]) + + l, r = r, l^f1(r, c.masking[3], c.rotate[3]) + l, r = r, l^f3(r, c.masking[2], c.rotate[2]) + l, r = r, l^f2(r, c.masking[1], c.rotate[1]) + l, r = r, l^f1(r, c.masking[0], c.rotate[0]) + + dst[0] = uint8(r >> 24) + dst[1] = uint8(r >> 16) + dst[2] = uint8(r >> 8) + dst[3] = uint8(r) + dst[4] = uint8(l >> 24) + dst[5] = uint8(l >> 16) + dst[6] = uint8(l >> 8) + dst[7] = uint8(l) +} + +type keyScheduleA [4][7]uint8 +type keyScheduleB [4][5]uint8 + +// keyScheduleRound contains the magic values for a round of the key schedule. +// The keyScheduleA deals with the lines like: +// z0z1z2z3 = x0x1x2x3 ^ S5[xD] ^ S6[xF] ^ S7[xC] ^ S8[xE] ^ S7[x8] +// Conceptually, both x and z are in the same array, x first. The first +// element describes which word of this array gets written to and the +// second, which word gets read. So, for the line above, it's "4, 0", because +// it's writing to the first word of z, which, being after x, is word 4, and +// reading from the first word of x: word 0. +// +// Next are the indexes into the S-boxes. Now the array is treated as bytes. So +// "xD" is 0xd. The first byte of z is written as "16 + 0", just to be clear +// that it's z that we're indexing. +// +// keyScheduleB deals with lines like: +// K1 = S5[z8] ^ S6[z9] ^ S7[z7] ^ S8[z6] ^ S5[z2] +// "K1" is ignored because key words are always written in order. So the five +// elements are the S-box indexes. They use the same form as in keyScheduleA, +// above. + +type keyScheduleRound struct{} +type keySchedule []keyScheduleRound + +var schedule = []struct { + a keyScheduleA + b keyScheduleB +}{ + { + keyScheduleA{ + {4, 0, 0xd, 0xf, 0xc, 0xe, 0x8}, + {5, 2, 16 + 0, 16 + 2, 16 + 1, 16 + 3, 0xa}, + {6, 3, 16 + 7, 16 + 6, 16 + 5, 16 + 4, 9}, + {7, 1, 16 + 0xa, 16 + 9, 16 + 0xb, 16 + 8, 0xb}, + }, + keyScheduleB{ + {16 + 8, 16 + 9, 16 + 7, 16 + 6, 16 + 2}, + {16 + 0xa, 16 + 0xb, 16 + 5, 16 + 4, 16 + 6}, + {16 + 0xc, 16 + 0xd, 16 + 3, 16 + 2, 16 + 9}, + {16 + 0xe, 16 + 0xf, 16 + 1, 16 + 0, 16 + 0xc}, + }, + }, + { + keyScheduleA{ + {0, 6, 16 + 5, 16 + 7, 16 + 4, 16 + 6, 16 + 0}, + {1, 4, 0, 2, 1, 3, 16 + 2}, + {2, 5, 7, 6, 5, 4, 16 + 1}, + {3, 7, 0xa, 9, 0xb, 8, 16 + 3}, + }, + keyScheduleB{ + {3, 2, 0xc, 0xd, 8}, + {1, 0, 0xe, 0xf, 0xd}, + {7, 6, 8, 9, 3}, + {5, 4, 0xa, 0xb, 7}, + }, + }, + { + keyScheduleA{ + {4, 0, 0xd, 0xf, 0xc, 0xe, 8}, + {5, 2, 16 + 0, 16 + 2, 16 + 1, 16 + 3, 0xa}, + {6, 3, 16 + 7, 16 + 6, 16 + 5, 16 + 4, 9}, + {7, 1, 16 + 0xa, 16 + 9, 16 + 0xb, 16 + 8, 0xb}, + }, + keyScheduleB{ + {16 + 3, 16 + 2, 16 + 0xc, 16 + 0xd, 16 + 9}, + {16 + 1, 16 + 0, 16 + 0xe, 16 + 0xf, 16 + 0xc}, + {16 + 7, 16 + 6, 16 + 8, 16 + 9, 16 + 2}, + {16 + 5, 16 + 4, 16 + 0xa, 16 + 0xb, 16 + 6}, + }, + }, + { + keyScheduleA{ + {0, 6, 16 + 5, 16 + 7, 16 + 4, 16 + 6, 16 + 0}, + {1, 4, 0, 2, 1, 3, 16 + 2}, + {2, 5, 7, 6, 5, 4, 16 + 1}, + {3, 7, 0xa, 9, 0xb, 8, 16 + 3}, + }, + keyScheduleB{ + {8, 9, 7, 6, 3}, + {0xa, 0xb, 5, 4, 7}, + {0xc, 0xd, 3, 2, 8}, + {0xe, 0xf, 1, 0, 0xd}, + }, + }, +} + +func (c *Cipher) keySchedule(in []byte) { + var t [8]uint32 + var k [32]uint32 + + for i := 0; i < 4; i++ { + j := i * 4 + t[i] = uint32(in[j])<<24 | uint32(in[j+1])<<16 | uint32(in[j+2])<<8 | uint32(in[j+3]) + } + + x := []byte{6, 7, 4, 5} + ki := 0 + + for half := 0; half < 2; half++ { + for _, round := range schedule { + for j := 0; j < 4; j++ { + var a [7]uint8 + copy(a[:], round.a[j][:]) + w := t[a[1]] + w ^= sBox[4][(t[a[2]>>2]>>(24-8*(a[2]&3)))&0xff] + w ^= sBox[5][(t[a[3]>>2]>>(24-8*(a[3]&3)))&0xff] + w ^= sBox[6][(t[a[4]>>2]>>(24-8*(a[4]&3)))&0xff] + w ^= sBox[7][(t[a[5]>>2]>>(24-8*(a[5]&3)))&0xff] + w ^= sBox[x[j]][(t[a[6]>>2]>>(24-8*(a[6]&3)))&0xff] + t[a[0]] = w + } + + for j := 0; j < 4; j++ { + var b [5]uint8 + copy(b[:], round.b[j][:]) + w := sBox[4][(t[b[0]>>2]>>(24-8*(b[0]&3)))&0xff] + w ^= sBox[5][(t[b[1]>>2]>>(24-8*(b[1]&3)))&0xff] + w ^= sBox[6][(t[b[2]>>2]>>(24-8*(b[2]&3)))&0xff] + w ^= sBox[7][(t[b[3]>>2]>>(24-8*(b[3]&3)))&0xff] + w ^= sBox[4+j][(t[b[4]>>2]>>(24-8*(b[4]&3)))&0xff] + k[ki] = w + ki++ + } + } + } + + for i := 0; i < 16; i++ { + c.masking[i] = k[i] + c.rotate[i] = uint8(k[16+i] & 0x1f) + } +} + +// These are the three 'f' functions. See RFC 2144, section 2.2. +func f1(d, m uint32, r uint8) uint32 { + t := m + d + I := (t << r) | (t >> (32 - r)) + return ((sBox[0][I>>24] ^ sBox[1][(I>>16)&0xff]) - sBox[2][(I>>8)&0xff]) + sBox[3][I&0xff] +} + +func f2(d, m uint32, r uint8) uint32 { + t := m ^ d + I := (t << r) | (t >> (32 - r)) + return ((sBox[0][I>>24] - sBox[1][(I>>16)&0xff]) + sBox[2][(I>>8)&0xff]) ^ sBox[3][I&0xff] +} + +func f3(d, m uint32, r uint8) uint32 { + t := m - d + I := (t << r) | (t >> (32 - r)) + return ((sBox[0][I>>24] + sBox[1][(I>>16)&0xff]) ^ sBox[2][(I>>8)&0xff]) - sBox[3][I&0xff] +} + +var sBox = [8][256]uint32{ + { + 0x30fb40d4, 0x9fa0ff0b, 0x6beccd2f, 0x3f258c7a, 0x1e213f2f, 0x9c004dd3, 0x6003e540, 0xcf9fc949, + 0xbfd4af27, 0x88bbbdb5, 0xe2034090, 0x98d09675, 0x6e63a0e0, 0x15c361d2, 0xc2e7661d, 0x22d4ff8e, + 0x28683b6f, 0xc07fd059, 0xff2379c8, 0x775f50e2, 0x43c340d3, 0xdf2f8656, 0x887ca41a, 0xa2d2bd2d, + 0xa1c9e0d6, 0x346c4819, 0x61b76d87, 0x22540f2f, 0x2abe32e1, 0xaa54166b, 0x22568e3a, 0xa2d341d0, + 0x66db40c8, 0xa784392f, 0x004dff2f, 0x2db9d2de, 0x97943fac, 0x4a97c1d8, 0x527644b7, 0xb5f437a7, + 0xb82cbaef, 0xd751d159, 0x6ff7f0ed, 0x5a097a1f, 0x827b68d0, 0x90ecf52e, 0x22b0c054, 0xbc8e5935, + 0x4b6d2f7f, 0x50bb64a2, 0xd2664910, 0xbee5812d, 0xb7332290, 0xe93b159f, 0xb48ee411, 0x4bff345d, + 0xfd45c240, 0xad31973f, 0xc4f6d02e, 0x55fc8165, 0xd5b1caad, 0xa1ac2dae, 0xa2d4b76d, 0xc19b0c50, + 0x882240f2, 0x0c6e4f38, 0xa4e4bfd7, 0x4f5ba272, 0x564c1d2f, 0xc59c5319, 0xb949e354, 0xb04669fe, + 0xb1b6ab8a, 0xc71358dd, 0x6385c545, 0x110f935d, 0x57538ad5, 0x6a390493, 0xe63d37e0, 0x2a54f6b3, + 0x3a787d5f, 0x6276a0b5, 0x19a6fcdf, 0x7a42206a, 0x29f9d4d5, 0xf61b1891, 0xbb72275e, 0xaa508167, + 0x38901091, 0xc6b505eb, 0x84c7cb8c, 0x2ad75a0f, 0x874a1427, 0xa2d1936b, 0x2ad286af, 0xaa56d291, + 0xd7894360, 0x425c750d, 0x93b39e26, 0x187184c9, 0x6c00b32d, 0x73e2bb14, 0xa0bebc3c, 0x54623779, + 0x64459eab, 0x3f328b82, 0x7718cf82, 0x59a2cea6, 0x04ee002e, 0x89fe78e6, 0x3fab0950, 0x325ff6c2, + 0x81383f05, 0x6963c5c8, 0x76cb5ad6, 0xd49974c9, 0xca180dcf, 0x380782d5, 0xc7fa5cf6, 0x8ac31511, + 0x35e79e13, 0x47da91d0, 0xf40f9086, 0xa7e2419e, 0x31366241, 0x051ef495, 0xaa573b04, 0x4a805d8d, + 0x548300d0, 0x00322a3c, 0xbf64cddf, 0xba57a68e, 0x75c6372b, 0x50afd341, 0xa7c13275, 0x915a0bf5, + 0x6b54bfab, 0x2b0b1426, 0xab4cc9d7, 0x449ccd82, 0xf7fbf265, 0xab85c5f3, 0x1b55db94, 0xaad4e324, + 0xcfa4bd3f, 0x2deaa3e2, 0x9e204d02, 0xc8bd25ac, 0xeadf55b3, 0xd5bd9e98, 0xe31231b2, 0x2ad5ad6c, + 0x954329de, 0xadbe4528, 0xd8710f69, 0xaa51c90f, 0xaa786bf6, 0x22513f1e, 0xaa51a79b, 0x2ad344cc, + 0x7b5a41f0, 0xd37cfbad, 0x1b069505, 0x41ece491, 0xb4c332e6, 0x032268d4, 0xc9600acc, 0xce387e6d, + 0xbf6bb16c, 0x6a70fb78, 0x0d03d9c9, 0xd4df39de, 0xe01063da, 0x4736f464, 0x5ad328d8, 0xb347cc96, + 0x75bb0fc3, 0x98511bfb, 0x4ffbcc35, 0xb58bcf6a, 0xe11f0abc, 0xbfc5fe4a, 0xa70aec10, 0xac39570a, + 0x3f04442f, 0x6188b153, 0xe0397a2e, 0x5727cb79, 0x9ceb418f, 0x1cacd68d, 0x2ad37c96, 0x0175cb9d, + 0xc69dff09, 0xc75b65f0, 0xd9db40d8, 0xec0e7779, 0x4744ead4, 0xb11c3274, 0xdd24cb9e, 0x7e1c54bd, + 0xf01144f9, 0xd2240eb1, 0x9675b3fd, 0xa3ac3755, 0xd47c27af, 0x51c85f4d, 0x56907596, 0xa5bb15e6, + 0x580304f0, 0xca042cf1, 0x011a37ea, 0x8dbfaadb, 0x35ba3e4a, 0x3526ffa0, 0xc37b4d09, 0xbc306ed9, + 0x98a52666, 0x5648f725, 0xff5e569d, 0x0ced63d0, 0x7c63b2cf, 0x700b45e1, 0xd5ea50f1, 0x85a92872, + 0xaf1fbda7, 0xd4234870, 0xa7870bf3, 0x2d3b4d79, 0x42e04198, 0x0cd0ede7, 0x26470db8, 0xf881814c, + 0x474d6ad7, 0x7c0c5e5c, 0xd1231959, 0x381b7298, 0xf5d2f4db, 0xab838653, 0x6e2f1e23, 0x83719c9e, + 0xbd91e046, 0x9a56456e, 0xdc39200c, 0x20c8c571, 0x962bda1c, 0xe1e696ff, 0xb141ab08, 0x7cca89b9, + 0x1a69e783, 0x02cc4843, 0xa2f7c579, 0x429ef47d, 0x427b169c, 0x5ac9f049, 0xdd8f0f00, 0x5c8165bf, + }, + { + 0x1f201094, 0xef0ba75b, 0x69e3cf7e, 0x393f4380, 0xfe61cf7a, 0xeec5207a, 0x55889c94, 0x72fc0651, + 0xada7ef79, 0x4e1d7235, 0xd55a63ce, 0xde0436ba, 0x99c430ef, 0x5f0c0794, 0x18dcdb7d, 0xa1d6eff3, + 0xa0b52f7b, 0x59e83605, 0xee15b094, 0xe9ffd909, 0xdc440086, 0xef944459, 0xba83ccb3, 0xe0c3cdfb, + 0xd1da4181, 0x3b092ab1, 0xf997f1c1, 0xa5e6cf7b, 0x01420ddb, 0xe4e7ef5b, 0x25a1ff41, 0xe180f806, + 0x1fc41080, 0x179bee7a, 0xd37ac6a9, 0xfe5830a4, 0x98de8b7f, 0x77e83f4e, 0x79929269, 0x24fa9f7b, + 0xe113c85b, 0xacc40083, 0xd7503525, 0xf7ea615f, 0x62143154, 0x0d554b63, 0x5d681121, 0xc866c359, + 0x3d63cf73, 0xcee234c0, 0xd4d87e87, 0x5c672b21, 0x071f6181, 0x39f7627f, 0x361e3084, 0xe4eb573b, + 0x602f64a4, 0xd63acd9c, 0x1bbc4635, 0x9e81032d, 0x2701f50c, 0x99847ab4, 0xa0e3df79, 0xba6cf38c, + 0x10843094, 0x2537a95e, 0xf46f6ffe, 0xa1ff3b1f, 0x208cfb6a, 0x8f458c74, 0xd9e0a227, 0x4ec73a34, + 0xfc884f69, 0x3e4de8df, 0xef0e0088, 0x3559648d, 0x8a45388c, 0x1d804366, 0x721d9bfd, 0xa58684bb, + 0xe8256333, 0x844e8212, 0x128d8098, 0xfed33fb4, 0xce280ae1, 0x27e19ba5, 0xd5a6c252, 0xe49754bd, + 0xc5d655dd, 0xeb667064, 0x77840b4d, 0xa1b6a801, 0x84db26a9, 0xe0b56714, 0x21f043b7, 0xe5d05860, + 0x54f03084, 0x066ff472, 0xa31aa153, 0xdadc4755, 0xb5625dbf, 0x68561be6, 0x83ca6b94, 0x2d6ed23b, + 0xeccf01db, 0xa6d3d0ba, 0xb6803d5c, 0xaf77a709, 0x33b4a34c, 0x397bc8d6, 0x5ee22b95, 0x5f0e5304, + 0x81ed6f61, 0x20e74364, 0xb45e1378, 0xde18639b, 0x881ca122, 0xb96726d1, 0x8049a7e8, 0x22b7da7b, + 0x5e552d25, 0x5272d237, 0x79d2951c, 0xc60d894c, 0x488cb402, 0x1ba4fe5b, 0xa4b09f6b, 0x1ca815cf, + 0xa20c3005, 0x8871df63, 0xb9de2fcb, 0x0cc6c9e9, 0x0beeff53, 0xe3214517, 0xb4542835, 0x9f63293c, + 0xee41e729, 0x6e1d2d7c, 0x50045286, 0x1e6685f3, 0xf33401c6, 0x30a22c95, 0x31a70850, 0x60930f13, + 0x73f98417, 0xa1269859, 0xec645c44, 0x52c877a9, 0xcdff33a6, 0xa02b1741, 0x7cbad9a2, 0x2180036f, + 0x50d99c08, 0xcb3f4861, 0xc26bd765, 0x64a3f6ab, 0x80342676, 0x25a75e7b, 0xe4e6d1fc, 0x20c710e6, + 0xcdf0b680, 0x17844d3b, 0x31eef84d, 0x7e0824e4, 0x2ccb49eb, 0x846a3bae, 0x8ff77888, 0xee5d60f6, + 0x7af75673, 0x2fdd5cdb, 0xa11631c1, 0x30f66f43, 0xb3faec54, 0x157fd7fa, 0xef8579cc, 0xd152de58, + 0xdb2ffd5e, 0x8f32ce19, 0x306af97a, 0x02f03ef8, 0x99319ad5, 0xc242fa0f, 0xa7e3ebb0, 0xc68e4906, + 0xb8da230c, 0x80823028, 0xdcdef3c8, 0xd35fb171, 0x088a1bc8, 0xbec0c560, 0x61a3c9e8, 0xbca8f54d, + 0xc72feffa, 0x22822e99, 0x82c570b4, 0xd8d94e89, 0x8b1c34bc, 0x301e16e6, 0x273be979, 0xb0ffeaa6, + 0x61d9b8c6, 0x00b24869, 0xb7ffce3f, 0x08dc283b, 0x43daf65a, 0xf7e19798, 0x7619b72f, 0x8f1c9ba4, + 0xdc8637a0, 0x16a7d3b1, 0x9fc393b7, 0xa7136eeb, 0xc6bcc63e, 0x1a513742, 0xef6828bc, 0x520365d6, + 0x2d6a77ab, 0x3527ed4b, 0x821fd216, 0x095c6e2e, 0xdb92f2fb, 0x5eea29cb, 0x145892f5, 0x91584f7f, + 0x5483697b, 0x2667a8cc, 0x85196048, 0x8c4bacea, 0x833860d4, 0x0d23e0f9, 0x6c387e8a, 0x0ae6d249, + 0xb284600c, 0xd835731d, 0xdcb1c647, 0xac4c56ea, 0x3ebd81b3, 0x230eabb0, 0x6438bc87, 0xf0b5b1fa, + 0x8f5ea2b3, 0xfc184642, 0x0a036b7a, 0x4fb089bd, 0x649da589, 0xa345415e, 0x5c038323, 0x3e5d3bb9, + 0x43d79572, 0x7e6dd07c, 0x06dfdf1e, 0x6c6cc4ef, 0x7160a539, 0x73bfbe70, 0x83877605, 0x4523ecf1, + }, + { + 0x8defc240, 0x25fa5d9f, 0xeb903dbf, 0xe810c907, 0x47607fff, 0x369fe44b, 0x8c1fc644, 0xaececa90, + 0xbeb1f9bf, 0xeefbcaea, 0xe8cf1950, 0x51df07ae, 0x920e8806, 0xf0ad0548, 0xe13c8d83, 0x927010d5, + 0x11107d9f, 0x07647db9, 0xb2e3e4d4, 0x3d4f285e, 0xb9afa820, 0xfade82e0, 0xa067268b, 0x8272792e, + 0x553fb2c0, 0x489ae22b, 0xd4ef9794, 0x125e3fbc, 0x21fffcee, 0x825b1bfd, 0x9255c5ed, 0x1257a240, + 0x4e1a8302, 0xbae07fff, 0x528246e7, 0x8e57140e, 0x3373f7bf, 0x8c9f8188, 0xa6fc4ee8, 0xc982b5a5, + 0xa8c01db7, 0x579fc264, 0x67094f31, 0xf2bd3f5f, 0x40fff7c1, 0x1fb78dfc, 0x8e6bd2c1, 0x437be59b, + 0x99b03dbf, 0xb5dbc64b, 0x638dc0e6, 0x55819d99, 0xa197c81c, 0x4a012d6e, 0xc5884a28, 0xccc36f71, + 0xb843c213, 0x6c0743f1, 0x8309893c, 0x0feddd5f, 0x2f7fe850, 0xd7c07f7e, 0x02507fbf, 0x5afb9a04, + 0xa747d2d0, 0x1651192e, 0xaf70bf3e, 0x58c31380, 0x5f98302e, 0x727cc3c4, 0x0a0fb402, 0x0f7fef82, + 0x8c96fdad, 0x5d2c2aae, 0x8ee99a49, 0x50da88b8, 0x8427f4a0, 0x1eac5790, 0x796fb449, 0x8252dc15, + 0xefbd7d9b, 0xa672597d, 0xada840d8, 0x45f54504, 0xfa5d7403, 0xe83ec305, 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0x64241f7a, 0x8248dca9, 0xc3b3ad66, 0x28136086, 0x0bd8dfa8, 0x356d1cf2, + 0x107789be, 0xb3b2e9ce, 0x0502aa8f, 0x0bc0351e, 0x166bf52a, 0xeb12ff82, 0xe3486911, 0xd34d7516, + 0x4e7b3aff, 0x5f43671b, 0x9cf6e037, 0x4981ac83, 0x334266ce, 0x8c9341b7, 0xd0d854c0, 0xcb3a6c88, + 0x47bc2829, 0x4725ba37, 0xa66ad22b, 0x7ad61f1e, 0x0c5cbafa, 0x4437f107, 0xb6e79962, 0x42d2d816, + 0x0a961288, 0xe1a5c06e, 0x13749e67, 0x72fc081a, 0xb1d139f7, 0xf9583745, 0xcf19df58, 0xbec3f756, + 0xc06eba30, 0x07211b24, 0x45c28829, 0xc95e317f, 0xbc8ec511, 0x38bc46e9, 0xc6e6fa14, 0xbae8584a, + 0xad4ebc46, 0x468f508b, 0x7829435f, 0xf124183b, 0x821dba9f, 0xaff60ff4, 0xea2c4e6d, 0x16e39264, + 0x92544a8b, 0x009b4fc3, 0xaba68ced, 0x9ac96f78, 0x06a5b79a, 0xb2856e6e, 0x1aec3ca9, 0xbe838688, + 0x0e0804e9, 0x55f1be56, 0xe7e5363b, 0xb3a1f25d, 0xf7debb85, 0x61fe033c, 0x16746233, 0x3c034c28, + 0xda6d0c74, 0x79aac56c, 0x3ce4e1ad, 0x51f0c802, 0x98f8f35a, 0x1626a49f, 0xeed82b29, 0x1d382fe3, + 0x0c4fb99a, 0xbb325778, 0x3ec6d97b, 0x6e77a6a9, 0xcb658b5c, 0xd45230c7, 0x2bd1408b, 0x60c03eb7, + 0xb9068d78, 0xa33754f4, 0xf430c87d, 0xc8a71302, 0xb96d8c32, 0xebd4e7be, 0xbe8b9d2d, 0x7979fb06, + 0xe7225308, 0x8b75cf77, 0x11ef8da4, 0xe083c858, 0x8d6b786f, 0x5a6317a6, 0xfa5cf7a0, 0x5dda0033, + 0xf28ebfb0, 0xf5b9c310, 0xa0eac280, 0x08b9767a, 0xa3d9d2b0, 0x79d34217, 0x021a718d, 0x9ac6336a, + 0x2711fd60, 0x438050e3, 0x069908a8, 0x3d7fedc4, 0x826d2bef, 0x4eeb8476, 0x488dcf25, 0x36c9d566, + 0x28e74e41, 0xc2610aca, 0x3d49a9cf, 0xbae3b9df, 0xb65f8de6, 0x92aeaf64, 0x3ac7d5e6, 0x9ea80509, + 0xf22b017d, 0xa4173f70, 0xdd1e16c3, 0x15e0d7f9, 0x50b1b887, 0x2b9f4fd5, 0x625aba82, 0x6a017962, + 0x2ec01b9c, 0x15488aa9, 0xd716e740, 0x40055a2c, 0x93d29a22, 0xe32dbf9a, 0x058745b9, 0x3453dc1e, + 0xd699296e, 0x496cff6f, 0x1c9f4986, 0xdfe2ed07, 0xb87242d1, 0x19de7eae, 0x053e561a, 0x15ad6f8c, + 0x66626c1c, 0x7154c24c, 0xea082b2a, 0x93eb2939, 0x17dcb0f0, 0x58d4f2ae, 0x9ea294fb, 0x52cf564c, + 0x9883fe66, 0x2ec40581, 0x763953c3, 0x01d6692e, 0xd3a0c108, 0xa1e7160e, 0xe4f2dfa6, 0x693ed285, + 0x74904698, 0x4c2b0edd, 0x4f757656, 0x5d393378, 0xa132234f, 0x3d321c5d, 0xc3f5e194, 0x4b269301, + 0xc79f022f, 0x3c997e7e, 0x5e4f9504, 0x3ffafbbd, 0x76f7ad0e, 0x296693f4, 0x3d1fce6f, 0xc61e45be, + 0xd3b5ab34, 0xf72bf9b7, 0x1b0434c0, 0x4e72b567, 0x5592a33d, 0xb5229301, 0xcfd2a87f, 0x60aeb767, + 0x1814386b, 0x30bcc33d, 0x38a0c07d, 0xfd1606f2, 0xc363519b, 0x589dd390, 0x5479f8e6, 0x1cb8d647, + 0x97fd61a9, 0xea7759f4, 0x2d57539d, 0x569a58cf, 0xe84e63ad, 0x462e1b78, 0x6580f87e, 0xf3817914, + 0x91da55f4, 0x40a230f3, 0xd1988f35, 0xb6e318d2, 0x3ffa50bc, 0x3d40f021, 0xc3c0bdae, 0x4958c24c, + 0x518f36b2, 0x84b1d370, 0x0fedce83, 0x878ddada, 0xf2a279c7, 0x94e01be8, 0x90716f4b, 0x954b8aa3, + }, + { + 0xe216300d, 0xbbddfffc, 0xa7ebdabd, 0x35648095, 0x7789f8b7, 0xe6c1121b, 0x0e241600, 0x052ce8b5, + 0x11a9cfb0, 0xe5952f11, 0xece7990a, 0x9386d174, 0x2a42931c, 0x76e38111, 0xb12def3a, 0x37ddddfc, + 0xde9adeb1, 0x0a0cc32c, 0xbe197029, 0x84a00940, 0xbb243a0f, 0xb4d137cf, 0xb44e79f0, 0x049eedfd, + 0x0b15a15d, 0x480d3168, 0x8bbbde5a, 0x669ded42, 0xc7ece831, 0x3f8f95e7, 0x72df191b, 0x7580330d, + 0x94074251, 0x5c7dcdfa, 0xabbe6d63, 0xaa402164, 0xb301d40a, 0x02e7d1ca, 0x53571dae, 0x7a3182a2, + 0x12a8ddec, 0xfdaa335d, 0x176f43e8, 0x71fb46d4, 0x38129022, 0xce949ad4, 0xb84769ad, 0x965bd862, + 0x82f3d055, 0x66fb9767, 0x15b80b4e, 0x1d5b47a0, 0x4cfde06f, 0xc28ec4b8, 0x57e8726e, 0x647a78fc, + 0x99865d44, 0x608bd593, 0x6c200e03, 0x39dc5ff6, 0x5d0b00a3, 0xae63aff2, 0x7e8bd632, 0x70108c0c, + 0xbbd35049, 0x2998df04, 0x980cf42a, 0x9b6df491, 0x9e7edd53, 0x06918548, 0x58cb7e07, 0x3b74ef2e, + 0x522fffb1, 0xd24708cc, 0x1c7e27cd, 0xa4eb215b, 0x3cf1d2e2, 0x19b47a38, 0x424f7618, 0x35856039, + 0x9d17dee7, 0x27eb35e6, 0xc9aff67b, 0x36baf5b8, 0x09c467cd, 0xc18910b1, 0xe11dbf7b, 0x06cd1af8, + 0x7170c608, 0x2d5e3354, 0xd4de495a, 0x64c6d006, 0xbcc0c62c, 0x3dd00db3, 0x708f8f34, 0x77d51b42, + 0x264f620f, 0x24b8d2bf, 0x15c1b79e, 0x46a52564, 0xf8d7e54e, 0x3e378160, 0x7895cda5, 0x859c15a5, + 0xe6459788, 0xc37bc75f, 0xdb07ba0c, 0x0676a3ab, 0x7f229b1e, 0x31842e7b, 0x24259fd7, 0xf8bef472, + 0x835ffcb8, 0x6df4c1f2, 0x96f5b195, 0xfd0af0fc, 0xb0fe134c, 0xe2506d3d, 0x4f9b12ea, 0xf215f225, + 0xa223736f, 0x9fb4c428, 0x25d04979, 0x34c713f8, 0xc4618187, 0xea7a6e98, 0x7cd16efc, 0x1436876c, + 0xf1544107, 0xbedeee14, 0x56e9af27, 0xa04aa441, 0x3cf7c899, 0x92ecbae6, 0xdd67016d, 0x151682eb, + 0xa842eedf, 0xfdba60b4, 0xf1907b75, 0x20e3030f, 0x24d8c29e, 0xe139673b, 0xefa63fb8, 0x71873054, + 0xb6f2cf3b, 0x9f326442, 0xcb15a4cc, 0xb01a4504, 0xf1e47d8d, 0x844a1be5, 0xbae7dfdc, 0x42cbda70, + 0xcd7dae0a, 0x57e85b7a, 0xd53f5af6, 0x20cf4d8c, 0xcea4d428, 0x79d130a4, 0x3486ebfb, 0x33d3cddc, + 0x77853b53, 0x37effcb5, 0xc5068778, 0xe580b3e6, 0x4e68b8f4, 0xc5c8b37e, 0x0d809ea2, 0x398feb7c, + 0x132a4f94, 0x43b7950e, 0x2fee7d1c, 0x223613bd, 0xdd06caa2, 0x37df932b, 0xc4248289, 0xacf3ebc3, + 0x5715f6b7, 0xef3478dd, 0xf267616f, 0xc148cbe4, 0x9052815e, 0x5e410fab, 0xb48a2465, 0x2eda7fa4, + 0xe87b40e4, 0xe98ea084, 0x5889e9e1, 0xefd390fc, 0xdd07d35b, 0xdb485694, 0x38d7e5b2, 0x57720101, + 0x730edebc, 0x5b643113, 0x94917e4f, 0x503c2fba, 0x646f1282, 0x7523d24a, 0xe0779695, 0xf9c17a8f, + 0x7a5b2121, 0xd187b896, 0x29263a4d, 0xba510cdf, 0x81f47c9f, 0xad1163ed, 0xea7b5965, 0x1a00726e, + 0x11403092, 0x00da6d77, 0x4a0cdd61, 0xad1f4603, 0x605bdfb0, 0x9eedc364, 0x22ebe6a8, 0xcee7d28a, + 0xa0e736a0, 0x5564a6b9, 0x10853209, 0xc7eb8f37, 0x2de705ca, 0x8951570f, 0xdf09822b, 0xbd691a6c, + 0xaa12e4f2, 0x87451c0f, 0xe0f6a27a, 0x3ada4819, 0x4cf1764f, 0x0d771c2b, 0x67cdb156, 0x350d8384, + 0x5938fa0f, 0x42399ef3, 0x36997b07, 0x0e84093d, 0x4aa93e61, 0x8360d87b, 0x1fa98b0c, 0x1149382c, + 0xe97625a5, 0x0614d1b7, 0x0e25244b, 0x0c768347, 0x589e8d82, 0x0d2059d1, 0xa466bb1e, 0xf8da0a82, + 0x04f19130, 0xba6e4ec0, 0x99265164, 0x1ee7230d, 0x50b2ad80, 0xeaee6801, 0x8db2a283, 0xea8bf59e, + }, +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/armor/armor.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/armor/armor.go new file mode 100644 index 00000000000..592d1864361 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/armor/armor.go @@ -0,0 +1,219 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package armor implements OpenPGP ASCII Armor, see RFC 4880. OpenPGP Armor is +// very similar to PEM except that it has an additional CRC checksum. +package armor // import "golang.org/x/crypto/openpgp/armor" + +import ( + "bufio" + "bytes" + "encoding/base64" + "golang.org/x/crypto/openpgp/errors" + "io" +) + +// A Block represents an OpenPGP armored structure. +// +// The encoded form is: +// -----BEGIN Type----- +// Headers +// +// base64-encoded Bytes +// '=' base64 encoded checksum +// -----END Type----- +// where Headers is a possibly empty sequence of Key: Value lines. +// +// Since the armored data can be very large, this package presents a streaming +// interface. +type Block struct { + Type string // The type, taken from the preamble (i.e. "PGP SIGNATURE"). + Header map[string]string // Optional headers. + Body io.Reader // A Reader from which the contents can be read + lReader lineReader + oReader openpgpReader +} + +var ArmorCorrupt error = errors.StructuralError("armor invalid") + +const crc24Init = 0xb704ce +const crc24Poly = 0x1864cfb +const crc24Mask = 0xffffff + +// crc24 calculates the OpenPGP checksum as specified in RFC 4880, section 6.1 +func crc24(crc uint32, d []byte) uint32 { + for _, b := range d { + crc ^= uint32(b) << 16 + for i := 0; i < 8; i++ { + crc <<= 1 + if crc&0x1000000 != 0 { + crc ^= crc24Poly + } + } + } + return crc +} + +var armorStart = []byte("-----BEGIN ") +var armorEnd = []byte("-----END ") +var armorEndOfLine = []byte("-----") + +// lineReader wraps a line based reader. It watches for the end of an armor +// block and records the expected CRC value. +type lineReader struct { + in *bufio.Reader + buf []byte + eof bool + crc uint32 +} + +func (l *lineReader) Read(p []byte) (n int, err error) { + if l.eof { + return 0, io.EOF + } + + if len(l.buf) > 0 { + n = copy(p, l.buf) + l.buf = l.buf[n:] + return + } + + line, isPrefix, err := l.in.ReadLine() + if err != nil { + return + } + if isPrefix { + return 0, ArmorCorrupt + } + + if len(line) == 5 && line[0] == '=' { + // This is the checksum line + var expectedBytes [3]byte + var m int + m, err = base64.StdEncoding.Decode(expectedBytes[0:], line[1:]) + if m != 3 || err != nil { + return + } + l.crc = uint32(expectedBytes[0])<<16 | + uint32(expectedBytes[1])<<8 | + uint32(expectedBytes[2]) + + line, _, err = l.in.ReadLine() + if err != nil && err != io.EOF { + return + } + if !bytes.HasPrefix(line, armorEnd) { + return 0, ArmorCorrupt + } + + l.eof = true + return 0, io.EOF + } + + if len(line) > 96 { + return 0, ArmorCorrupt + } + + n = copy(p, line) + bytesToSave := len(line) - n + if bytesToSave > 0 { + if cap(l.buf) < bytesToSave { + l.buf = make([]byte, 0, bytesToSave) + } + l.buf = l.buf[0:bytesToSave] + copy(l.buf, line[n:]) + } + + return +} + +// openpgpReader passes Read calls to the underlying base64 decoder, but keeps +// a running CRC of the resulting data and checks the CRC against the value +// found by the lineReader at EOF. +type openpgpReader struct { + lReader *lineReader + b64Reader io.Reader + currentCRC uint32 +} + +func (r *openpgpReader) Read(p []byte) (n int, err error) { + n, err = r.b64Reader.Read(p) + r.currentCRC = crc24(r.currentCRC, p[:n]) + + if err == io.EOF { + if r.lReader.crc != uint32(r.currentCRC&crc24Mask) { + return 0, ArmorCorrupt + } + } + + return +} + +// Decode reads a PGP armored block from the given Reader. It will ignore +// leading garbage. If it doesn't find a block, it will return nil, io.EOF. The +// given Reader is not usable after calling this function: an arbitrary amount +// of data may have been read past the end of the block. +func Decode(in io.Reader) (p *Block, err error) { + r := bufio.NewReaderSize(in, 100) + var line []byte + ignoreNext := false + +TryNextBlock: + p = nil + + // Skip leading garbage + for { + ignoreThis := ignoreNext + line, ignoreNext, err = r.ReadLine() + if err != nil { + return + } + if ignoreNext || ignoreThis { + continue + } + line = bytes.TrimSpace(line) + if len(line) > len(armorStart)+len(armorEndOfLine) && bytes.HasPrefix(line, armorStart) { + break + } + } + + p = new(Block) + p.Type = string(line[len(armorStart) : len(line)-len(armorEndOfLine)]) + p.Header = make(map[string]string) + nextIsContinuation := false + var lastKey string + + // Read headers + for { + isContinuation := nextIsContinuation + line, nextIsContinuation, err = r.ReadLine() + if err != nil { + p = nil + return + } + if isContinuation { + p.Header[lastKey] += string(line) + continue + } + line = bytes.TrimSpace(line) + if len(line) == 0 { + break + } + + i := bytes.Index(line, []byte(": ")) + if i == -1 { + goto TryNextBlock + } + lastKey = string(line[:i]) + p.Header[lastKey] = string(line[i+2:]) + } + + p.lReader.in = r + p.oReader.currentCRC = crc24Init + p.oReader.lReader = &p.lReader + p.oReader.b64Reader = base64.NewDecoder(base64.StdEncoding, &p.lReader) + p.Body = &p.oReader + + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/armor/encode.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/armor/encode.go new file mode 100644 index 00000000000..6f07582c37c --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/armor/encode.go @@ -0,0 +1,160 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package armor + +import ( + "encoding/base64" + "io" +) + +var armorHeaderSep = []byte(": ") +var blockEnd = []byte("\n=") +var newline = []byte("\n") +var armorEndOfLineOut = []byte("-----\n") + +// writeSlices writes its arguments to the given Writer. +func writeSlices(out io.Writer, slices ...[]byte) (err error) { + for _, s := range slices { + _, err = out.Write(s) + if err != nil { + return err + } + } + return +} + +// lineBreaker breaks data across several lines, all of the same byte length +// (except possibly the last). Lines are broken with a single '\n'. +type lineBreaker struct { + lineLength int + line []byte + used int + out io.Writer + haveWritten bool +} + +func newLineBreaker(out io.Writer, lineLength int) *lineBreaker { + return &lineBreaker{ + lineLength: lineLength, + line: make([]byte, lineLength), + used: 0, + out: out, + } +} + +func (l *lineBreaker) Write(b []byte) (n int, err error) { + n = len(b) + + if n == 0 { + return + } + + if l.used == 0 && l.haveWritten { + _, err = l.out.Write([]byte{'\n'}) + if err != nil { + return + } + } + + if l.used+len(b) < l.lineLength { + l.used += copy(l.line[l.used:], b) + return + } + + l.haveWritten = true + _, err = l.out.Write(l.line[0:l.used]) + if err != nil { + return + } + excess := l.lineLength - l.used + l.used = 0 + + _, err = l.out.Write(b[0:excess]) + if err != nil { + return + } + + _, err = l.Write(b[excess:]) + return +} + +func (l *lineBreaker) Close() (err error) { + if l.used > 0 { + _, err = l.out.Write(l.line[0:l.used]) + if err != nil { + return + } + } + + return +} + +// encoding keeps track of a running CRC24 over the data which has been written +// to it and outputs a OpenPGP checksum when closed, followed by an armor +// trailer. +// +// It's built into a stack of io.Writers: +// encoding -> base64 encoder -> lineBreaker -> out +type encoding struct { + out io.Writer + breaker *lineBreaker + b64 io.WriteCloser + crc uint32 + blockType []byte +} + +func (e *encoding) Write(data []byte) (n int, err error) { + e.crc = crc24(e.crc, data) + return e.b64.Write(data) +} + +func (e *encoding) Close() (err error) { + err = e.b64.Close() + if err != nil { + return + } + e.breaker.Close() + + var checksumBytes [3]byte + checksumBytes[0] = byte(e.crc >> 16) + checksumBytes[1] = byte(e.crc >> 8) + checksumBytes[2] = byte(e.crc) + + var b64ChecksumBytes [4]byte + base64.StdEncoding.Encode(b64ChecksumBytes[:], checksumBytes[:]) + + return writeSlices(e.out, blockEnd, b64ChecksumBytes[:], newline, armorEnd, e.blockType, armorEndOfLine) +} + +// Encode returns a WriteCloser which will encode the data written to it in +// OpenPGP armor. +func Encode(out io.Writer, blockType string, headers map[string]string) (w io.WriteCloser, err error) { + bType := []byte(blockType) + err = writeSlices(out, armorStart, bType, armorEndOfLineOut) + if err != nil { + return + } + + for k, v := range headers { + err = writeSlices(out, []byte(k), armorHeaderSep, []byte(v), newline) + if err != nil { + return + } + } + + _, err = out.Write(newline) + if err != nil { + return + } + + e := &encoding{ + out: out, + breaker: newLineBreaker(out, 64), + crc: crc24Init, + blockType: bType, + } + e.b64 = base64.NewEncoder(base64.StdEncoding, e.breaker) + return e, nil +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/canonical_text.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/canonical_text.go new file mode 100644 index 00000000000..e601e389f12 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/canonical_text.go @@ -0,0 +1,59 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package openpgp + +import "hash" + +// NewCanonicalTextHash reformats text written to it into the canonical +// form and then applies the hash h. See RFC 4880, section 5.2.1. +func NewCanonicalTextHash(h hash.Hash) hash.Hash { + return &canonicalTextHash{h, 0} +} + +type canonicalTextHash struct { + h hash.Hash + s int +} + +var newline = []byte{'\r', '\n'} + +func (cth *canonicalTextHash) Write(buf []byte) (int, error) { + start := 0 + + for i, c := range buf { + switch cth.s { + case 0: + if c == '\r' { + cth.s = 1 + } else if c == '\n' { + cth.h.Write(buf[start:i]) + cth.h.Write(newline) + start = i + 1 + } + case 1: + cth.s = 0 + } + } + + cth.h.Write(buf[start:]) + return len(buf), nil +} + +func (cth *canonicalTextHash) Sum(in []byte) []byte { + return cth.h.Sum(in) +} + +func (cth *canonicalTextHash) Reset() { + cth.h.Reset() + cth.s = 0 +} + +func (cth *canonicalTextHash) Size() int { + return cth.h.Size() +} + +func (cth *canonicalTextHash) BlockSize() int { + return cth.h.BlockSize() +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/clearsign/clearsign.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/clearsign/clearsign.go new file mode 100644 index 00000000000..def4cabaff2 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/clearsign/clearsign.go @@ -0,0 +1,376 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package clearsign generates and processes OpenPGP, clear-signed data. See +// RFC 4880, section 7. +// +// Clearsigned messages are cryptographically signed, but the contents of the +// message are kept in plaintext so that it can be read without special tools. +package clearsign // import "golang.org/x/crypto/openpgp/clearsign" + +import ( + "bufio" + "bytes" + "crypto" + "hash" + "io" + "net/textproto" + "strconv" + + "golang.org/x/crypto/openpgp/armor" + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/packet" +) + +// A Block represents a clearsigned message. A signature on a Block can +// be checked by passing Bytes into openpgp.CheckDetachedSignature. +type Block struct { + Headers textproto.MIMEHeader // Optional message headers + Plaintext []byte // The original message text + Bytes []byte // The signed message + ArmoredSignature *armor.Block // The signature block +} + +// start is the marker which denotes the beginning of a clearsigned message. +var start = []byte("\n-----BEGIN PGP SIGNED MESSAGE-----") + +// dashEscape is prefixed to any lines that begin with a hyphen so that they +// can't be confused with endText. +var dashEscape = []byte("- ") + +// endText is a marker which denotes the end of the message and the start of +// an armored signature. +var endText = []byte("-----BEGIN PGP SIGNATURE-----") + +// end is a marker which denotes the end of the armored signature. +var end = []byte("\n-----END PGP SIGNATURE-----") + +var crlf = []byte("\r\n") +var lf = byte('\n') + +// getLine returns the first \r\n or \n delineated line from the given byte +// array. The line does not include the \r\n or \n. The remainder of the byte +// array (also not including the new line bytes) is also returned and this will +// always be smaller than the original argument. +func getLine(data []byte) (line, rest []byte) { + i := bytes.Index(data, []byte{'\n'}) + var j int + if i < 0 { + i = len(data) + j = i + } else { + j = i + 1 + if i > 0 && data[i-1] == '\r' { + i-- + } + } + return data[0:i], data[j:] +} + +// Decode finds the first clearsigned message in data and returns it, as well +// as the suffix of data which remains after the message. +func Decode(data []byte) (b *Block, rest []byte) { + // start begins with a newline. However, at the very beginning of + // the byte array, we'll accept the start string without it. + rest = data + if bytes.HasPrefix(data, start[1:]) { + rest = rest[len(start)-1:] + } else if i := bytes.Index(data, start); i >= 0 { + rest = rest[i+len(start):] + } else { + return nil, data + } + + // Consume the start line. + _, rest = getLine(rest) + + var line []byte + b = &Block{ + Headers: make(textproto.MIMEHeader), + } + + // Next come a series of header lines. + for { + // This loop terminates because getLine's second result is + // always smaller than its argument. + if len(rest) == 0 { + return nil, data + } + // An empty line marks the end of the headers. + if line, rest = getLine(rest); len(line) == 0 { + break + } + + i := bytes.Index(line, []byte{':'}) + if i == -1 { + return nil, data + } + + key, val := line[0:i], line[i+1:] + key = bytes.TrimSpace(key) + val = bytes.TrimSpace(val) + b.Headers.Add(string(key), string(val)) + } + + firstLine := true + for { + start := rest + + line, rest = getLine(rest) + if len(line) == 0 && len(rest) == 0 { + // No armored data was found, so this isn't a complete message. + return nil, data + } + if bytes.Equal(line, endText) { + // Back up to the start of the line because armor expects to see the + // header line. + rest = start + break + } + + // The final CRLF isn't included in the hash so we don't write it until + // we've seen the next line. + if firstLine { + firstLine = false + } else { + b.Bytes = append(b.Bytes, crlf...) + } + + if bytes.HasPrefix(line, dashEscape) { + line = line[2:] + } + line = bytes.TrimRight(line, " \t") + b.Bytes = append(b.Bytes, line...) + + b.Plaintext = append(b.Plaintext, line...) + b.Plaintext = append(b.Plaintext, lf) + } + + // We want to find the extent of the armored data (including any newlines at + // the end). + i := bytes.Index(rest, end) + if i == -1 { + return nil, data + } + i += len(end) + for i < len(rest) && (rest[i] == '\r' || rest[i] == '\n') { + i++ + } + armored := rest[:i] + rest = rest[i:] + + var err error + b.ArmoredSignature, err = armor.Decode(bytes.NewBuffer(armored)) + if err != nil { + return nil, data + } + + return b, rest +} + +// A dashEscaper is an io.WriteCloser which processes the body of a clear-signed +// message. The clear-signed message is written to buffered and a hash, suitable +// for signing, is maintained in h. +// +// When closed, an armored signature is created and written to complete the +// message. +type dashEscaper struct { + buffered *bufio.Writer + h hash.Hash + hashType crypto.Hash + + atBeginningOfLine bool + isFirstLine bool + + whitespace []byte + byteBuf []byte // a one byte buffer to save allocations + + privateKey *packet.PrivateKey + config *packet.Config +} + +func (d *dashEscaper) Write(data []byte) (n int, err error) { + for _, b := range data { + d.byteBuf[0] = b + + if d.atBeginningOfLine { + // The final CRLF isn't included in the hash so we have to wait + // until this point (the start of the next line) before writing it. + if !d.isFirstLine { + d.h.Write(crlf) + } + d.isFirstLine = false + } + + // Any whitespace at the end of the line has to be removed so we + // buffer it until we find out whether there's more on this line. + if b == ' ' || b == '\t' || b == '\r' { + d.whitespace = append(d.whitespace, b) + d.atBeginningOfLine = false + continue + } + + if d.atBeginningOfLine { + // At the beginning of a line, hyphens have to be escaped. + if b == '-' { + // The signature isn't calculated over the dash-escaped text so + // the escape is only written to buffered. + if _, err = d.buffered.Write(dashEscape); err != nil { + return + } + d.h.Write(d.byteBuf) + d.atBeginningOfLine = false + } else if b == '\n' { + // Nothing to do because we delay writing CRLF to the hash. + } else { + d.h.Write(d.byteBuf) + d.atBeginningOfLine = false + } + if err = d.buffered.WriteByte(b); err != nil { + return + } + } else { + if b == '\n' { + // We got a raw \n. Drop any trailing whitespace and write a + // CRLF. + d.whitespace = d.whitespace[:0] + // We delay writing CRLF to the hash until the start of the + // next line. + if err = d.buffered.WriteByte(b); err != nil { + return + } + d.atBeginningOfLine = true + } else { + // Any buffered whitespace wasn't at the end of the line so + // we need to write it out. + if len(d.whitespace) > 0 { + d.h.Write(d.whitespace) + if _, err = d.buffered.Write(d.whitespace); err != nil { + return + } + d.whitespace = d.whitespace[:0] + } + d.h.Write(d.byteBuf) + if err = d.buffered.WriteByte(b); err != nil { + return + } + } + } + } + + n = len(data) + return +} + +func (d *dashEscaper) Close() (err error) { + if !d.atBeginningOfLine { + if err = d.buffered.WriteByte(lf); err != nil { + return + } + } + sig := new(packet.Signature) + sig.SigType = packet.SigTypeText + sig.PubKeyAlgo = d.privateKey.PubKeyAlgo + sig.Hash = d.hashType + sig.CreationTime = d.config.Now() + sig.IssuerKeyId = &d.privateKey.KeyId + + if err = sig.Sign(d.h, d.privateKey, d.config); err != nil { + return + } + + out, err := armor.Encode(d.buffered, "PGP SIGNATURE", nil) + if err != nil { + return + } + + if err = sig.Serialize(out); err != nil { + return + } + if err = out.Close(); err != nil { + return + } + if err = d.buffered.Flush(); err != nil { + return + } + return +} + +// Encode returns a WriteCloser which will clear-sign a message with privateKey +// and write it to w. If config is nil, sensible defaults are used. +func Encode(w io.Writer, privateKey *packet.PrivateKey, config *packet.Config) (plaintext io.WriteCloser, err error) { + if privateKey.Encrypted { + return nil, errors.InvalidArgumentError("signing key is encrypted") + } + + hashType := config.Hash() + name := nameOfHash(hashType) + if len(name) == 0 { + return nil, errors.UnsupportedError("unknown hash type: " + strconv.Itoa(int(hashType))) + } + + if !hashType.Available() { + return nil, errors.UnsupportedError("unsupported hash type: " + strconv.Itoa(int(hashType))) + } + h := hashType.New() + + buffered := bufio.NewWriter(w) + // start has a \n at the beginning that we don't want here. + if _, err = buffered.Write(start[1:]); err != nil { + return + } + if err = buffered.WriteByte(lf); err != nil { + return + } + if _, err = buffered.WriteString("Hash: "); err != nil { + return + } + if _, err = buffered.WriteString(name); err != nil { + return + } + if err = buffered.WriteByte(lf); err != nil { + return + } + if err = buffered.WriteByte(lf); err != nil { + return + } + + plaintext = &dashEscaper{ + buffered: buffered, + h: h, + hashType: hashType, + + atBeginningOfLine: true, + isFirstLine: true, + + byteBuf: make([]byte, 1), + + privateKey: privateKey, + config: config, + } + + return +} + +// nameOfHash returns the OpenPGP name for the given hash, or the empty string +// if the name isn't known. See RFC 4880, section 9.4. +func nameOfHash(h crypto.Hash) string { + switch h { + case crypto.MD5: + return "MD5" + case crypto.SHA1: + return "SHA1" + case crypto.RIPEMD160: + return "RIPEMD160" + case crypto.SHA224: + return "SHA224" + case crypto.SHA256: + return "SHA256" + case crypto.SHA384: + return "SHA384" + case crypto.SHA512: + return "SHA512" + } + return "" +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/elgamal/elgamal.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/elgamal/elgamal.go new file mode 100644 index 00000000000..73f4fe37859 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/elgamal/elgamal.go @@ -0,0 +1,122 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package elgamal implements ElGamal encryption, suitable for OpenPGP, +// as specified in "A Public-Key Cryptosystem and a Signature Scheme Based on +// Discrete Logarithms," IEEE Transactions on Information Theory, v. IT-31, +// n. 4, 1985, pp. 469-472. +// +// This form of ElGamal embeds PKCS#1 v1.5 padding, which may make it +// unsuitable for other protocols. RSA should be used in preference in any +// case. +package elgamal // import "golang.org/x/crypto/openpgp/elgamal" + +import ( + "crypto/rand" + "crypto/subtle" + "errors" + "io" + "math/big" +) + +// PublicKey represents an ElGamal public key. +type PublicKey struct { + G, P, Y *big.Int +} + +// PrivateKey represents an ElGamal private key. +type PrivateKey struct { + PublicKey + X *big.Int +} + +// Encrypt encrypts the given message to the given public key. The result is a +// pair of integers. Errors can result from reading random, or because msg is +// too large to be encrypted to the public key. +func Encrypt(random io.Reader, pub *PublicKey, msg []byte) (c1, c2 *big.Int, err error) { + pLen := (pub.P.BitLen() + 7) / 8 + if len(msg) > pLen-11 { + err = errors.New("elgamal: message too long") + return + } + + // EM = 0x02 || PS || 0x00 || M + em := make([]byte, pLen-1) + em[0] = 2 + ps, mm := em[1:len(em)-len(msg)-1], em[len(em)-len(msg):] + err = nonZeroRandomBytes(ps, random) + if err != nil { + return + } + em[len(em)-len(msg)-1] = 0 + copy(mm, msg) + + m := new(big.Int).SetBytes(em) + + k, err := rand.Int(random, pub.P) + if err != nil { + return + } + + c1 = new(big.Int).Exp(pub.G, k, pub.P) + s := new(big.Int).Exp(pub.Y, k, pub.P) + c2 = s.Mul(s, m) + c2.Mod(c2, pub.P) + + return +} + +// Decrypt takes two integers, resulting from an ElGamal encryption, and +// returns the plaintext of the message. An error can result only if the +// ciphertext is invalid. Users should keep in mind that this is a padding +// oracle and thus, if exposed to an adaptive chosen ciphertext attack, can +// be used to break the cryptosystem. See ``Chosen Ciphertext Attacks +// Against Protocols Based on the RSA Encryption Standard PKCS #1'', Daniel +// Bleichenbacher, Advances in Cryptology (Crypto '98), +func Decrypt(priv *PrivateKey, c1, c2 *big.Int) (msg []byte, err error) { + s := new(big.Int).Exp(c1, priv.X, priv.P) + s.ModInverse(s, priv.P) + s.Mul(s, c2) + s.Mod(s, priv.P) + em := s.Bytes() + + firstByteIsTwo := subtle.ConstantTimeByteEq(em[0], 2) + + // The remainder of the plaintext must be a string of non-zero random + // octets, followed by a 0, followed by the message. + // lookingForIndex: 1 iff we are still looking for the zero. + // index: the offset of the first zero byte. + var lookingForIndex, index int + lookingForIndex = 1 + + for i := 1; i < len(em); i++ { + equals0 := subtle.ConstantTimeByteEq(em[i], 0) + index = subtle.ConstantTimeSelect(lookingForIndex&equals0, i, index) + lookingForIndex = subtle.ConstantTimeSelect(equals0, 0, lookingForIndex) + } + + if firstByteIsTwo != 1 || lookingForIndex != 0 || index < 9 { + return nil, errors.New("elgamal: decryption error") + } + return em[index+1:], nil +} + +// nonZeroRandomBytes fills the given slice with non-zero random octets. +func nonZeroRandomBytes(s []byte, rand io.Reader) (err error) { + _, err = io.ReadFull(rand, s) + if err != nil { + return + } + + for i := 0; i < len(s); i++ { + for s[i] == 0 { + _, err = io.ReadFull(rand, s[i:i+1]) + if err != nil { + return + } + } + } + + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/errors/errors.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/errors/errors.go new file mode 100644 index 00000000000..eb0550b2d04 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/errors/errors.go @@ -0,0 +1,72 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package errors contains common error types for the OpenPGP packages. +package errors // import "golang.org/x/crypto/openpgp/errors" + +import ( + "strconv" +) + +// A StructuralError is returned when OpenPGP data is found to be syntactically +// invalid. +type StructuralError string + +func (s StructuralError) Error() string { + return "openpgp: invalid data: " + string(s) +} + +// UnsupportedError indicates that, although the OpenPGP data is valid, it +// makes use of currently unimplemented features. +type UnsupportedError string + +func (s UnsupportedError) Error() string { + return "openpgp: unsupported feature: " + string(s) +} + +// InvalidArgumentError indicates that the caller is in error and passed an +// incorrect value. +type InvalidArgumentError string + +func (i InvalidArgumentError) Error() string { + return "openpgp: invalid argument: " + string(i) +} + +// SignatureError indicates that a syntactically valid signature failed to +// validate. +type SignatureError string + +func (b SignatureError) Error() string { + return "openpgp: invalid signature: " + string(b) +} + +type keyIncorrectError int + +func (ki keyIncorrectError) Error() string { + return "openpgp: incorrect key" +} + +var ErrKeyIncorrect error = keyIncorrectError(0) + +type unknownIssuerError int + +func (unknownIssuerError) Error() string { + return "openpgp: signature made by unknown entity" +} + +var ErrUnknownIssuer error = unknownIssuerError(0) + +type keyRevokedError int + +func (keyRevokedError) Error() string { + return "openpgp: signature made by revoked key" +} + +var ErrKeyRevoked error = keyRevokedError(0) + +type UnknownPacketTypeError uint8 + +func (upte UnknownPacketTypeError) Error() string { + return "openpgp: unknown packet type: " + strconv.Itoa(int(upte)) +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/keys.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/keys.go new file mode 100644 index 00000000000..68b14c6ae64 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/keys.go @@ -0,0 +1,637 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package openpgp + +import ( + "crypto/rsa" + "io" + "time" + + "golang.org/x/crypto/openpgp/armor" + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/packet" +) + +// PublicKeyType is the armor type for a PGP public key. +var PublicKeyType = "PGP PUBLIC KEY BLOCK" + +// PrivateKeyType is the armor type for a PGP private key. +var PrivateKeyType = "PGP PRIVATE KEY BLOCK" + +// An Entity represents the components of an OpenPGP key: a primary public key +// (which must be a signing key), one or more identities claimed by that key, +// and zero or more subkeys, which may be encryption keys. +type Entity struct { + PrimaryKey *packet.PublicKey + PrivateKey *packet.PrivateKey + Identities map[string]*Identity // indexed by Identity.Name + Revocations []*packet.Signature + Subkeys []Subkey +} + +// An Identity represents an identity claimed by an Entity and zero or more +// assertions by other entities about that claim. +type Identity struct { + Name string // by convention, has the form "Full Name (comment) " + UserId *packet.UserId + SelfSignature *packet.Signature + Signatures []*packet.Signature +} + +// A Subkey is an additional public key in an Entity. Subkeys can be used for +// encryption. +type Subkey struct { + PublicKey *packet.PublicKey + PrivateKey *packet.PrivateKey + Sig *packet.Signature +} + +// A Key identifies a specific public key in an Entity. This is either the +// Entity's primary key or a subkey. +type Key struct { + Entity *Entity + PublicKey *packet.PublicKey + PrivateKey *packet.PrivateKey + SelfSignature *packet.Signature +} + +// A KeyRing provides access to public and private keys. +type KeyRing interface { + // KeysById returns the set of keys that have the given key id. + KeysById(id uint64) []Key + // KeysByIdAndUsage returns the set of keys with the given id + // that also meet the key usage given by requiredUsage. + // The requiredUsage is expressed as the bitwise-OR of + // packet.KeyFlag* values. + KeysByIdUsage(id uint64, requiredUsage byte) []Key + // DecryptionKeys returns all private keys that are valid for + // decryption. + DecryptionKeys() []Key +} + +// primaryIdentity returns the Identity marked as primary or the first identity +// if none are so marked. +func (e *Entity) primaryIdentity() *Identity { + var firstIdentity *Identity + for _, ident := range e.Identities { + if firstIdentity == nil { + firstIdentity = ident + } + if ident.SelfSignature.IsPrimaryId != nil && *ident.SelfSignature.IsPrimaryId { + return ident + } + } + return firstIdentity +} + +// encryptionKey returns the best candidate Key for encrypting a message to the +// given Entity. +func (e *Entity) encryptionKey(now time.Time) (Key, bool) { + candidateSubkey := -1 + + // Iterate the keys to find the newest key + var maxTime time.Time + for i, subkey := range e.Subkeys { + if subkey.Sig.FlagsValid && + subkey.Sig.FlagEncryptCommunications && + subkey.PublicKey.PubKeyAlgo.CanEncrypt() && + !subkey.Sig.KeyExpired(now) && + (maxTime.IsZero() || subkey.Sig.CreationTime.After(maxTime)) { + candidateSubkey = i + maxTime = subkey.Sig.CreationTime + } + } + + if candidateSubkey != -1 { + subkey := e.Subkeys[candidateSubkey] + return Key{e, subkey.PublicKey, subkey.PrivateKey, subkey.Sig}, true + } + + // If we don't have any candidate subkeys for encryption and + // the primary key doesn't have any usage metadata then we + // assume that the primary key is ok. Or, if the primary key is + // marked as ok to encrypt to, then we can obviously use it. + i := e.primaryIdentity() + if !i.SelfSignature.FlagsValid || i.SelfSignature.FlagEncryptCommunications && + e.PrimaryKey.PubKeyAlgo.CanEncrypt() && + !i.SelfSignature.KeyExpired(now) { + return Key{e, e.PrimaryKey, e.PrivateKey, i.SelfSignature}, true + } + + // This Entity appears to be signing only. + return Key{}, false +} + +// signingKey return the best candidate Key for signing a message with this +// Entity. +func (e *Entity) signingKey(now time.Time) (Key, bool) { + candidateSubkey := -1 + + for i, subkey := range e.Subkeys { + if subkey.Sig.FlagsValid && + subkey.Sig.FlagSign && + subkey.PublicKey.PubKeyAlgo.CanSign() && + !subkey.Sig.KeyExpired(now) { + candidateSubkey = i + break + } + } + + if candidateSubkey != -1 { + subkey := e.Subkeys[candidateSubkey] + return Key{e, subkey.PublicKey, subkey.PrivateKey, subkey.Sig}, true + } + + // If we have no candidate subkey then we assume that it's ok to sign + // with the primary key. + i := e.primaryIdentity() + if !i.SelfSignature.FlagsValid || i.SelfSignature.FlagSign && + !i.SelfSignature.KeyExpired(now) { + return Key{e, e.PrimaryKey, e.PrivateKey, i.SelfSignature}, true + } + + return Key{}, false +} + +// An EntityList contains one or more Entities. +type EntityList []*Entity + +// KeysById returns the set of keys that have the given key id. +func (el EntityList) KeysById(id uint64) (keys []Key) { + for _, e := range el { + if e.PrimaryKey.KeyId == id { + var selfSig *packet.Signature + for _, ident := range e.Identities { + if selfSig == nil { + selfSig = ident.SelfSignature + } else if ident.SelfSignature.IsPrimaryId != nil && *ident.SelfSignature.IsPrimaryId { + selfSig = ident.SelfSignature + break + } + } + keys = append(keys, Key{e, e.PrimaryKey, e.PrivateKey, selfSig}) + } + + for _, subKey := range e.Subkeys { + if subKey.PublicKey.KeyId == id { + keys = append(keys, Key{e, subKey.PublicKey, subKey.PrivateKey, subKey.Sig}) + } + } + } + return +} + +// KeysByIdAndUsage returns the set of keys with the given id that also meet +// the key usage given by requiredUsage. The requiredUsage is expressed as +// the bitwise-OR of packet.KeyFlag* values. +func (el EntityList) KeysByIdUsage(id uint64, requiredUsage byte) (keys []Key) { + for _, key := range el.KeysById(id) { + if len(key.Entity.Revocations) > 0 { + continue + } + + if key.SelfSignature.RevocationReason != nil { + continue + } + + if key.SelfSignature.FlagsValid && requiredUsage != 0 { + var usage byte + if key.SelfSignature.FlagCertify { + usage |= packet.KeyFlagCertify + } + if key.SelfSignature.FlagSign { + usage |= packet.KeyFlagSign + } + if key.SelfSignature.FlagEncryptCommunications { + usage |= packet.KeyFlagEncryptCommunications + } + if key.SelfSignature.FlagEncryptStorage { + usage |= packet.KeyFlagEncryptStorage + } + if usage&requiredUsage != requiredUsage { + continue + } + } + + keys = append(keys, key) + } + return +} + +// DecryptionKeys returns all private keys that are valid for decryption. +func (el EntityList) DecryptionKeys() (keys []Key) { + for _, e := range el { + for _, subKey := range e.Subkeys { + if subKey.PrivateKey != nil && (!subKey.Sig.FlagsValid || subKey.Sig.FlagEncryptStorage || subKey.Sig.FlagEncryptCommunications) { + keys = append(keys, Key{e, subKey.PublicKey, subKey.PrivateKey, subKey.Sig}) + } + } + } + return +} + +// ReadArmoredKeyRing reads one or more public/private keys from an armor keyring file. +func ReadArmoredKeyRing(r io.Reader) (EntityList, error) { + block, err := armor.Decode(r) + if err == io.EOF { + return nil, errors.InvalidArgumentError("no armored data found") + } + if err != nil { + return nil, err + } + if block.Type != PublicKeyType && block.Type != PrivateKeyType { + return nil, errors.InvalidArgumentError("expected public or private key block, got: " + block.Type) + } + + return ReadKeyRing(block.Body) +} + +// ReadKeyRing reads one or more public/private keys. Unsupported keys are +// ignored as long as at least a single valid key is found. +func ReadKeyRing(r io.Reader) (el EntityList, err error) { + packets := packet.NewReader(r) + var lastUnsupportedError error + + for { + var e *Entity + e, err = ReadEntity(packets) + if err != nil { + // TODO: warn about skipped unsupported/unreadable keys + if _, ok := err.(errors.UnsupportedError); ok { + lastUnsupportedError = err + err = readToNextPublicKey(packets) + } else if _, ok := err.(errors.StructuralError); ok { + // Skip unreadable, badly-formatted keys + lastUnsupportedError = err + err = readToNextPublicKey(packets) + } + if err == io.EOF { + err = nil + break + } + if err != nil { + el = nil + break + } + } else { + el = append(el, e) + } + } + + if len(el) == 0 && err == nil { + err = lastUnsupportedError + } + return +} + +// readToNextPublicKey reads packets until the start of the entity and leaves +// the first packet of the new entity in the Reader. +func readToNextPublicKey(packets *packet.Reader) (err error) { + var p packet.Packet + for { + p, err = packets.Next() + if err == io.EOF { + return + } else if err != nil { + if _, ok := err.(errors.UnsupportedError); ok { + err = nil + continue + } + return + } + + if pk, ok := p.(*packet.PublicKey); ok && !pk.IsSubkey { + packets.Unread(p) + return + } + } +} + +// ReadEntity reads an entity (public key, identities, subkeys etc) from the +// given Reader. +func ReadEntity(packets *packet.Reader) (*Entity, error) { + e := new(Entity) + e.Identities = make(map[string]*Identity) + + p, err := packets.Next() + if err != nil { + return nil, err + } + + var ok bool + if e.PrimaryKey, ok = p.(*packet.PublicKey); !ok { + if e.PrivateKey, ok = p.(*packet.PrivateKey); !ok { + packets.Unread(p) + return nil, errors.StructuralError("first packet was not a public/private key") + } else { + e.PrimaryKey = &e.PrivateKey.PublicKey + } + } + + if !e.PrimaryKey.PubKeyAlgo.CanSign() { + return nil, errors.StructuralError("primary key cannot be used for signatures") + } + + var current *Identity + var revocations []*packet.Signature +EachPacket: + for { + p, err := packets.Next() + if err == io.EOF { + break + } else if err != nil { + return nil, err + } + + switch pkt := p.(type) { + case *packet.UserId: + current = new(Identity) + current.Name = pkt.Id + current.UserId = pkt + e.Identities[pkt.Id] = current + + for { + p, err = packets.Next() + if err == io.EOF { + return nil, io.ErrUnexpectedEOF + } else if err != nil { + return nil, err + } + + sig, ok := p.(*packet.Signature) + if !ok { + return nil, errors.StructuralError("user ID packet not followed by self-signature") + } + + if (sig.SigType == packet.SigTypePositiveCert || sig.SigType == packet.SigTypeGenericCert) && sig.IssuerKeyId != nil && *sig.IssuerKeyId == e.PrimaryKey.KeyId { + if err = e.PrimaryKey.VerifyUserIdSignature(pkt.Id, e.PrimaryKey, sig); err != nil { + return nil, errors.StructuralError("user ID self-signature invalid: " + err.Error()) + } + current.SelfSignature = sig + break + } + current.Signatures = append(current.Signatures, sig) + } + case *packet.Signature: + if pkt.SigType == packet.SigTypeKeyRevocation { + revocations = append(revocations, pkt) + } else if pkt.SigType == packet.SigTypeDirectSignature { + // TODO: RFC4880 5.2.1 permits signatures + // directly on keys (eg. to bind additional + // revocation keys). + } else if current == nil { + return nil, errors.StructuralError("signature packet found before user id packet") + } else { + current.Signatures = append(current.Signatures, pkt) + } + case *packet.PrivateKey: + if pkt.IsSubkey == false { + packets.Unread(p) + break EachPacket + } + err = addSubkey(e, packets, &pkt.PublicKey, pkt) + if err != nil { + return nil, err + } + case *packet.PublicKey: + if pkt.IsSubkey == false { + packets.Unread(p) + break EachPacket + } + err = addSubkey(e, packets, pkt, nil) + if err != nil { + return nil, err + } + default: + // we ignore unknown packets + } + } + + if len(e.Identities) == 0 { + return nil, errors.StructuralError("entity without any identities") + } + + for _, revocation := range revocations { + err = e.PrimaryKey.VerifyRevocationSignature(revocation) + if err == nil { + e.Revocations = append(e.Revocations, revocation) + } else { + // TODO: RFC 4880 5.2.3.15 defines revocation keys. + return nil, errors.StructuralError("revocation signature signed by alternate key") + } + } + + return e, nil +} + +func addSubkey(e *Entity, packets *packet.Reader, pub *packet.PublicKey, priv *packet.PrivateKey) error { + var subKey Subkey + subKey.PublicKey = pub + subKey.PrivateKey = priv + p, err := packets.Next() + if err == io.EOF { + return io.ErrUnexpectedEOF + } + if err != nil { + return errors.StructuralError("subkey signature invalid: " + err.Error()) + } + var ok bool + subKey.Sig, ok = p.(*packet.Signature) + if !ok { + return errors.StructuralError("subkey packet not followed by signature") + } + if subKey.Sig.SigType != packet.SigTypeSubkeyBinding && subKey.Sig.SigType != packet.SigTypeSubkeyRevocation { + return errors.StructuralError("subkey signature with wrong type") + } + err = e.PrimaryKey.VerifyKeySignature(subKey.PublicKey, subKey.Sig) + if err != nil { + return errors.StructuralError("subkey signature invalid: " + err.Error()) + } + e.Subkeys = append(e.Subkeys, subKey) + return nil +} + +const defaultRSAKeyBits = 2048 + +// NewEntity returns an Entity that contains a fresh RSA/RSA keypair with a +// single identity composed of the given full name, comment and email, any of +// which may be empty but must not contain any of "()<>\x00". +// If config is nil, sensible defaults will be used. +func NewEntity(name, comment, email string, config *packet.Config) (*Entity, error) { + currentTime := config.Now() + + bits := defaultRSAKeyBits + if config != nil && config.RSABits != 0 { + bits = config.RSABits + } + + uid := packet.NewUserId(name, comment, email) + if uid == nil { + return nil, errors.InvalidArgumentError("user id field contained invalid characters") + } + signingPriv, err := rsa.GenerateKey(config.Random(), bits) + if err != nil { + return nil, err + } + encryptingPriv, err := rsa.GenerateKey(config.Random(), bits) + if err != nil { + return nil, err + } + + e := &Entity{ + PrimaryKey: packet.NewRSAPublicKey(currentTime, &signingPriv.PublicKey), + PrivateKey: packet.NewRSAPrivateKey(currentTime, signingPriv), + Identities: make(map[string]*Identity), + } + isPrimaryId := true + e.Identities[uid.Id] = &Identity{ + Name: uid.Name, + UserId: uid, + SelfSignature: &packet.Signature{ + CreationTime: currentTime, + SigType: packet.SigTypePositiveCert, + PubKeyAlgo: packet.PubKeyAlgoRSA, + Hash: config.Hash(), + IsPrimaryId: &isPrimaryId, + FlagsValid: true, + FlagSign: true, + FlagCertify: true, + IssuerKeyId: &e.PrimaryKey.KeyId, + }, + } + + // If the user passes in a DefaultHash via packet.Config, + // set the PreferredHash for the SelfSignature. + if config != nil && config.DefaultHash != 0 { + e.Identities[uid.Id].SelfSignature.PreferredHash = []uint8{hashToHashId(config.DefaultHash)} + } + + e.Subkeys = make([]Subkey, 1) + e.Subkeys[0] = Subkey{ + PublicKey: packet.NewRSAPublicKey(currentTime, &encryptingPriv.PublicKey), + PrivateKey: packet.NewRSAPrivateKey(currentTime, encryptingPriv), + Sig: &packet.Signature{ + CreationTime: currentTime, + SigType: packet.SigTypeSubkeyBinding, + PubKeyAlgo: packet.PubKeyAlgoRSA, + Hash: config.Hash(), + FlagsValid: true, + FlagEncryptStorage: true, + FlagEncryptCommunications: true, + IssuerKeyId: &e.PrimaryKey.KeyId, + }, + } + e.Subkeys[0].PublicKey.IsSubkey = true + e.Subkeys[0].PrivateKey.IsSubkey = true + + return e, nil +} + +// SerializePrivate serializes an Entity, including private key material, to +// the given Writer. For now, it must only be used on an Entity returned from +// NewEntity. +// If config is nil, sensible defaults will be used. +func (e *Entity) SerializePrivate(w io.Writer, config *packet.Config) (err error) { + err = e.PrivateKey.Serialize(w) + if err != nil { + return + } + for _, ident := range e.Identities { + err = ident.UserId.Serialize(w) + if err != nil { + return + } + err = ident.SelfSignature.SignUserId(ident.UserId.Id, e.PrimaryKey, e.PrivateKey, config) + if err != nil { + return + } + err = ident.SelfSignature.Serialize(w) + if err != nil { + return + } + } + for _, subkey := range e.Subkeys { + err = subkey.PrivateKey.Serialize(w) + if err != nil { + return + } + err = subkey.Sig.SignKey(subkey.PublicKey, e.PrivateKey, config) + if err != nil { + return + } + err = subkey.Sig.Serialize(w) + if err != nil { + return + } + } + return nil +} + +// Serialize writes the public part of the given Entity to w. (No private +// key material will be output). +func (e *Entity) Serialize(w io.Writer) error { + err := e.PrimaryKey.Serialize(w) + if err != nil { + return err + } + for _, ident := range e.Identities { + err = ident.UserId.Serialize(w) + if err != nil { + return err + } + err = ident.SelfSignature.Serialize(w) + if err != nil { + return err + } + for _, sig := range ident.Signatures { + err = sig.Serialize(w) + if err != nil { + return err + } + } + } + for _, subkey := range e.Subkeys { + err = subkey.PublicKey.Serialize(w) + if err != nil { + return err + } + err = subkey.Sig.Serialize(w) + if err != nil { + return err + } + } + return nil +} + +// SignIdentity adds a signature to e, from signer, attesting that identity is +// associated with e. The provided identity must already be an element of +// e.Identities and the private key of signer must have been decrypted if +// necessary. +// If config is nil, sensible defaults will be used. +func (e *Entity) SignIdentity(identity string, signer *Entity, config *packet.Config) error { + if signer.PrivateKey == nil { + return errors.InvalidArgumentError("signing Entity must have a private key") + } + if signer.PrivateKey.Encrypted { + return errors.InvalidArgumentError("signing Entity's private key must be decrypted") + } + ident, ok := e.Identities[identity] + if !ok { + return errors.InvalidArgumentError("given identity string not found in Entity") + } + + sig := &packet.Signature{ + SigType: packet.SigTypeGenericCert, + PubKeyAlgo: signer.PrivateKey.PubKeyAlgo, + Hash: config.Hash(), + CreationTime: config.Now(), + IssuerKeyId: &signer.PrivateKey.KeyId, + } + if err := sig.SignUserId(identity, e.PrimaryKey, signer.PrivateKey, config); err != nil { + return err + } + ident.Signatures = append(ident.Signatures, sig) + return nil +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/compressed.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/compressed.go new file mode 100644 index 00000000000..e8f0b5caa7d --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/compressed.go @@ -0,0 +1,123 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "compress/bzip2" + "compress/flate" + "compress/zlib" + "golang.org/x/crypto/openpgp/errors" + "io" + "strconv" +) + +// Compressed represents a compressed OpenPGP packet. The decompressed contents +// will contain more OpenPGP packets. See RFC 4880, section 5.6. +type Compressed struct { + Body io.Reader +} + +const ( + NoCompression = flate.NoCompression + BestSpeed = flate.BestSpeed + BestCompression = flate.BestCompression + DefaultCompression = flate.DefaultCompression +) + +// CompressionConfig contains compressor configuration settings. +type CompressionConfig struct { + // Level is the compression level to use. It must be set to + // between -1 and 9, with -1 causing the compressor to use the + // default compression level, 0 causing the compressor to use + // no compression and 1 to 9 representing increasing (better, + // slower) compression levels. If Level is less than -1 or + // more then 9, a non-nil error will be returned during + // encryption. See the constants above for convenient common + // settings for Level. + Level int +} + +func (c *Compressed) parse(r io.Reader) error { + var buf [1]byte + _, err := readFull(r, buf[:]) + if err != nil { + return err + } + + switch buf[0] { + case 1: + c.Body = flate.NewReader(r) + case 2: + c.Body, err = zlib.NewReader(r) + case 3: + c.Body = bzip2.NewReader(r) + default: + err = errors.UnsupportedError("unknown compression algorithm: " + strconv.Itoa(int(buf[0]))) + } + + return err +} + +// compressedWriterCloser represents the serialized compression stream +// header and the compressor. Its Close() method ensures that both the +// compressor and serialized stream header are closed. Its Write() +// method writes to the compressor. +type compressedWriteCloser struct { + sh io.Closer // Stream Header + c io.WriteCloser // Compressor +} + +func (cwc compressedWriteCloser) Write(p []byte) (int, error) { + return cwc.c.Write(p) +} + +func (cwc compressedWriteCloser) Close() (err error) { + err = cwc.c.Close() + if err != nil { + return err + } + + return cwc.sh.Close() +} + +// SerializeCompressed serializes a compressed data packet to w and +// returns a WriteCloser to which the literal data packets themselves +// can be written and which MUST be closed on completion. If cc is +// nil, sensible defaults will be used to configure the compression +// algorithm. +func SerializeCompressed(w io.WriteCloser, algo CompressionAlgo, cc *CompressionConfig) (literaldata io.WriteCloser, err error) { + compressed, err := serializeStreamHeader(w, packetTypeCompressed) + if err != nil { + return + } + + _, err = compressed.Write([]byte{uint8(algo)}) + if err != nil { + return + } + + level := DefaultCompression + if cc != nil { + level = cc.Level + } + + var compressor io.WriteCloser + switch algo { + case CompressionZIP: + compressor, err = flate.NewWriter(compressed, level) + case CompressionZLIB: + compressor, err = zlib.NewWriterLevel(compressed, level) + default: + s := strconv.Itoa(int(algo)) + err = errors.UnsupportedError("Unsupported compression algorithm: " + s) + } + if err != nil { + return + } + + literaldata = compressedWriteCloser{compressed, compressor} + + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/config.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/config.go new file mode 100644 index 00000000000..c76eecc963a --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/config.go @@ -0,0 +1,91 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "crypto" + "crypto/rand" + "io" + "time" +) + +// Config collects a number of parameters along with sensible defaults. +// A nil *Config is valid and results in all default values. +type Config struct { + // Rand provides the source of entropy. + // If nil, the crypto/rand Reader is used. + Rand io.Reader + // DefaultHash is the default hash function to be used. + // If zero, SHA-256 is used. + DefaultHash crypto.Hash + // DefaultCipher is the cipher to be used. + // If zero, AES-128 is used. + DefaultCipher CipherFunction + // Time returns the current time as the number of seconds since the + // epoch. If Time is nil, time.Now is used. + Time func() time.Time + // DefaultCompressionAlgo is the compression algorithm to be + // applied to the plaintext before encryption. If zero, no + // compression is done. + DefaultCompressionAlgo CompressionAlgo + // CompressionConfig configures the compression settings. + CompressionConfig *CompressionConfig + // S2KCount is only used for symmetric encryption. It + // determines the strength of the passphrase stretching when + // the said passphrase is hashed to produce a key. S2KCount + // should be between 1024 and 65011712, inclusive. If Config + // is nil or S2KCount is 0, the value 65536 used. Not all + // values in the above range can be represented. S2KCount will + // be rounded up to the next representable value if it cannot + // be encoded exactly. When set, it is strongly encrouraged to + // use a value that is at least 65536. See RFC 4880 Section + // 3.7.1.3. + S2KCount int + // RSABits is the number of bits in new RSA keys made with NewEntity. + // If zero, then 2048 bit keys are created. + RSABits int +} + +func (c *Config) Random() io.Reader { + if c == nil || c.Rand == nil { + return rand.Reader + } + return c.Rand +} + +func (c *Config) Hash() crypto.Hash { + if c == nil || uint(c.DefaultHash) == 0 { + return crypto.SHA256 + } + return c.DefaultHash +} + +func (c *Config) Cipher() CipherFunction { + if c == nil || uint8(c.DefaultCipher) == 0 { + return CipherAES128 + } + return c.DefaultCipher +} + +func (c *Config) Now() time.Time { + if c == nil || c.Time == nil { + return time.Now() + } + return c.Time() +} + +func (c *Config) Compression() CompressionAlgo { + if c == nil { + return CompressionNone + } + return c.DefaultCompressionAlgo +} + +func (c *Config) PasswordHashIterations() int { + if c == nil || c.S2KCount == 0 { + return 0 + } + return c.S2KCount +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/encrypted_key.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/encrypted_key.go new file mode 100644 index 00000000000..266840d05a3 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/encrypted_key.go @@ -0,0 +1,199 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "crypto/rsa" + "encoding/binary" + "io" + "math/big" + "strconv" + + "golang.org/x/crypto/openpgp/elgamal" + "golang.org/x/crypto/openpgp/errors" +) + +const encryptedKeyVersion = 3 + +// EncryptedKey represents a public-key encrypted session key. See RFC 4880, +// section 5.1. +type EncryptedKey struct { + KeyId uint64 + Algo PublicKeyAlgorithm + CipherFunc CipherFunction // only valid after a successful Decrypt + Key []byte // only valid after a successful Decrypt + + encryptedMPI1, encryptedMPI2 parsedMPI +} + +func (e *EncryptedKey) parse(r io.Reader) (err error) { + var buf [10]byte + _, err = readFull(r, buf[:]) + if err != nil { + return + } + if buf[0] != encryptedKeyVersion { + return errors.UnsupportedError("unknown EncryptedKey version " + strconv.Itoa(int(buf[0]))) + } + e.KeyId = binary.BigEndian.Uint64(buf[1:9]) + e.Algo = PublicKeyAlgorithm(buf[9]) + switch e.Algo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly: + e.encryptedMPI1.bytes, e.encryptedMPI1.bitLength, err = readMPI(r) + case PubKeyAlgoElGamal: + e.encryptedMPI1.bytes, e.encryptedMPI1.bitLength, err = readMPI(r) + if err != nil { + return + } + e.encryptedMPI2.bytes, e.encryptedMPI2.bitLength, err = readMPI(r) + } + _, err = consumeAll(r) + return +} + +func checksumKeyMaterial(key []byte) uint16 { + var checksum uint16 + for _, v := range key { + checksum += uint16(v) + } + return checksum +} + +// Decrypt decrypts an encrypted session key with the given private key. The +// private key must have been decrypted first. +// If config is nil, sensible defaults will be used. +func (e *EncryptedKey) Decrypt(priv *PrivateKey, config *Config) error { + var err error + var b []byte + + // TODO(agl): use session key decryption routines here to avoid + // padding oracle attacks. + switch priv.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly: + b, err = rsa.DecryptPKCS1v15(config.Random(), priv.PrivateKey.(*rsa.PrivateKey), e.encryptedMPI1.bytes) + case PubKeyAlgoElGamal: + c1 := new(big.Int).SetBytes(e.encryptedMPI1.bytes) + c2 := new(big.Int).SetBytes(e.encryptedMPI2.bytes) + b, err = elgamal.Decrypt(priv.PrivateKey.(*elgamal.PrivateKey), c1, c2) + default: + err = errors.InvalidArgumentError("cannot decrypted encrypted session key with private key of type " + strconv.Itoa(int(priv.PubKeyAlgo))) + } + + if err != nil { + return err + } + + e.CipherFunc = CipherFunction(b[0]) + e.Key = b[1 : len(b)-2] + expectedChecksum := uint16(b[len(b)-2])<<8 | uint16(b[len(b)-1]) + checksum := checksumKeyMaterial(e.Key) + if checksum != expectedChecksum { + return errors.StructuralError("EncryptedKey checksum incorrect") + } + + return nil +} + +// Serialize writes the encrypted key packet, e, to w. +func (e *EncryptedKey) Serialize(w io.Writer) error { + var mpiLen int + switch e.Algo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly: + mpiLen = 2 + len(e.encryptedMPI1.bytes) + case PubKeyAlgoElGamal: + mpiLen = 2 + len(e.encryptedMPI1.bytes) + 2 + len(e.encryptedMPI2.bytes) + default: + return errors.InvalidArgumentError("don't know how to serialize encrypted key type " + strconv.Itoa(int(e.Algo))) + } + + serializeHeader(w, packetTypeEncryptedKey, 1 /* version */ +8 /* key id */ +1 /* algo */ +mpiLen) + + w.Write([]byte{encryptedKeyVersion}) + binary.Write(w, binary.BigEndian, e.KeyId) + w.Write([]byte{byte(e.Algo)}) + + switch e.Algo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly: + writeMPIs(w, e.encryptedMPI1) + case PubKeyAlgoElGamal: + writeMPIs(w, e.encryptedMPI1, e.encryptedMPI2) + default: + panic("internal error") + } + + return nil +} + +// SerializeEncryptedKey serializes an encrypted key packet to w that contains +// key, encrypted to pub. +// If config is nil, sensible defaults will be used. +func SerializeEncryptedKey(w io.Writer, pub *PublicKey, cipherFunc CipherFunction, key []byte, config *Config) error { + var buf [10]byte + buf[0] = encryptedKeyVersion + binary.BigEndian.PutUint64(buf[1:9], pub.KeyId) + buf[9] = byte(pub.PubKeyAlgo) + + keyBlock := make([]byte, 1 /* cipher type */ +len(key)+2 /* checksum */) + keyBlock[0] = byte(cipherFunc) + copy(keyBlock[1:], key) + checksum := checksumKeyMaterial(key) + keyBlock[1+len(key)] = byte(checksum >> 8) + keyBlock[1+len(key)+1] = byte(checksum) + + switch pub.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly: + return serializeEncryptedKeyRSA(w, config.Random(), buf, pub.PublicKey.(*rsa.PublicKey), keyBlock) + case PubKeyAlgoElGamal: + return serializeEncryptedKeyElGamal(w, config.Random(), buf, pub.PublicKey.(*elgamal.PublicKey), keyBlock) + case PubKeyAlgoDSA, PubKeyAlgoRSASignOnly: + return errors.InvalidArgumentError("cannot encrypt to public key of type " + strconv.Itoa(int(pub.PubKeyAlgo))) + } + + return errors.UnsupportedError("encrypting a key to public key of type " + strconv.Itoa(int(pub.PubKeyAlgo))) +} + +func serializeEncryptedKeyRSA(w io.Writer, rand io.Reader, header [10]byte, pub *rsa.PublicKey, keyBlock []byte) error { + cipherText, err := rsa.EncryptPKCS1v15(rand, pub, keyBlock) + if err != nil { + return errors.InvalidArgumentError("RSA encryption failed: " + err.Error()) + } + + packetLen := 10 /* header length */ + 2 /* mpi size */ + len(cipherText) + + err = serializeHeader(w, packetTypeEncryptedKey, packetLen) + if err != nil { + return err + } + _, err = w.Write(header[:]) + if err != nil { + return err + } + return writeMPI(w, 8*uint16(len(cipherText)), cipherText) +} + +func serializeEncryptedKeyElGamal(w io.Writer, rand io.Reader, header [10]byte, pub *elgamal.PublicKey, keyBlock []byte) error { + c1, c2, err := elgamal.Encrypt(rand, pub, keyBlock) + if err != nil { + return errors.InvalidArgumentError("ElGamal encryption failed: " + err.Error()) + } + + packetLen := 10 /* header length */ + packetLen += 2 /* mpi size */ + (c1.BitLen()+7)/8 + packetLen += 2 /* mpi size */ + (c2.BitLen()+7)/8 + + err = serializeHeader(w, packetTypeEncryptedKey, packetLen) + if err != nil { + return err + } + _, err = w.Write(header[:]) + if err != nil { + return err + } + err = writeBig(w, c1) + if err != nil { + return err + } + return writeBig(w, c2) +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/literal.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/literal.go new file mode 100644 index 00000000000..1a9ec6e51e8 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/literal.go @@ -0,0 +1,89 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "encoding/binary" + "io" +) + +// LiteralData represents an encrypted file. See RFC 4880, section 5.9. +type LiteralData struct { + IsBinary bool + FileName string + Time uint32 // Unix epoch time. Either creation time or modification time. 0 means undefined. + Body io.Reader +} + +// ForEyesOnly returns whether the contents of the LiteralData have been marked +// as especially sensitive. +func (l *LiteralData) ForEyesOnly() bool { + return l.FileName == "_CONSOLE" +} + +func (l *LiteralData) parse(r io.Reader) (err error) { + var buf [256]byte + + _, err = readFull(r, buf[:2]) + if err != nil { + return + } + + l.IsBinary = buf[0] == 'b' + fileNameLen := int(buf[1]) + + _, err = readFull(r, buf[:fileNameLen]) + if err != nil { + return + } + + l.FileName = string(buf[:fileNameLen]) + + _, err = readFull(r, buf[:4]) + if err != nil { + return + } + + l.Time = binary.BigEndian.Uint32(buf[:4]) + l.Body = r + return +} + +// SerializeLiteral serializes a literal data packet to w and returns a +// WriteCloser to which the data itself can be written and which MUST be closed +// on completion. The fileName is truncated to 255 bytes. +func SerializeLiteral(w io.WriteCloser, isBinary bool, fileName string, time uint32) (plaintext io.WriteCloser, err error) { + var buf [4]byte + buf[0] = 't' + if isBinary { + buf[0] = 'b' + } + if len(fileName) > 255 { + fileName = fileName[:255] + } + buf[1] = byte(len(fileName)) + + inner, err := serializeStreamHeader(w, packetTypeLiteralData) + if err != nil { + return + } + + _, err = inner.Write(buf[:2]) + if err != nil { + return + } + _, err = inner.Write([]byte(fileName)) + if err != nil { + return + } + binary.BigEndian.PutUint32(buf[:], time) + _, err = inner.Write(buf[:]) + if err != nil { + return + } + + plaintext = inner + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/ocfb.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/ocfb.go new file mode 100644 index 00000000000..ce2a33a547c --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/ocfb.go @@ -0,0 +1,143 @@ +// Copyright 2010 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// OpenPGP CFB Mode. http://tools.ietf.org/html/rfc4880#section-13.9 + +package packet + +import ( + "crypto/cipher" +) + +type ocfbEncrypter struct { + b cipher.Block + fre []byte + outUsed int +} + +// An OCFBResyncOption determines if the "resynchronization step" of OCFB is +// performed. +type OCFBResyncOption bool + +const ( + OCFBResync OCFBResyncOption = true + OCFBNoResync OCFBResyncOption = false +) + +// NewOCFBEncrypter returns a cipher.Stream which encrypts data with OpenPGP's +// cipher feedback mode using the given cipher.Block, and an initial amount of +// ciphertext. randData must be random bytes and be the same length as the +// cipher.Block's block size. Resync determines if the "resynchronization step" +// from RFC 4880, 13.9 step 7 is performed. Different parts of OpenPGP vary on +// this point. +func NewOCFBEncrypter(block cipher.Block, randData []byte, resync OCFBResyncOption) (cipher.Stream, []byte) { + blockSize := block.BlockSize() + if len(randData) != blockSize { + return nil, nil + } + + x := &ocfbEncrypter{ + b: block, + fre: make([]byte, blockSize), + outUsed: 0, + } + prefix := make([]byte, blockSize+2) + + block.Encrypt(x.fre, x.fre) + for i := 0; i < blockSize; i++ { + prefix[i] = randData[i] ^ x.fre[i] + } + + block.Encrypt(x.fre, prefix[:blockSize]) + prefix[blockSize] = x.fre[0] ^ randData[blockSize-2] + prefix[blockSize+1] = x.fre[1] ^ randData[blockSize-1] + + if resync { + block.Encrypt(x.fre, prefix[2:]) + } else { + x.fre[0] = prefix[blockSize] + x.fre[1] = prefix[blockSize+1] + x.outUsed = 2 + } + return x, prefix +} + +func (x *ocfbEncrypter) XORKeyStream(dst, src []byte) { + for i := 0; i < len(src); i++ { + if x.outUsed == len(x.fre) { + x.b.Encrypt(x.fre, x.fre) + x.outUsed = 0 + } + + x.fre[x.outUsed] ^= src[i] + dst[i] = x.fre[x.outUsed] + x.outUsed++ + } +} + +type ocfbDecrypter struct { + b cipher.Block + fre []byte + outUsed int +} + +// NewOCFBDecrypter returns a cipher.Stream which decrypts data with OpenPGP's +// cipher feedback mode using the given cipher.Block. Prefix must be the first +// blockSize + 2 bytes of the ciphertext, where blockSize is the cipher.Block's +// block size. If an incorrect key is detected then nil is returned. On +// successful exit, blockSize+2 bytes of decrypted data are written into +// prefix. Resync determines if the "resynchronization step" from RFC 4880, +// 13.9 step 7 is performed. Different parts of OpenPGP vary on this point. +func NewOCFBDecrypter(block cipher.Block, prefix []byte, resync OCFBResyncOption) cipher.Stream { + blockSize := block.BlockSize() + if len(prefix) != blockSize+2 { + return nil + } + + x := &ocfbDecrypter{ + b: block, + fre: make([]byte, blockSize), + outUsed: 0, + } + prefixCopy := make([]byte, len(prefix)) + copy(prefixCopy, prefix) + + block.Encrypt(x.fre, x.fre) + for i := 0; i < blockSize; i++ { + prefixCopy[i] ^= x.fre[i] + } + + block.Encrypt(x.fre, prefix[:blockSize]) + prefixCopy[blockSize] ^= x.fre[0] + prefixCopy[blockSize+1] ^= x.fre[1] + + if prefixCopy[blockSize-2] != prefixCopy[blockSize] || + prefixCopy[blockSize-1] != prefixCopy[blockSize+1] { + return nil + } + + if resync { + block.Encrypt(x.fre, prefix[2:]) + } else { + x.fre[0] = prefix[blockSize] + x.fre[1] = prefix[blockSize+1] + x.outUsed = 2 + } + copy(prefix, prefixCopy) + return x +} + +func (x *ocfbDecrypter) XORKeyStream(dst, src []byte) { + for i := 0; i < len(src); i++ { + if x.outUsed == len(x.fre) { + x.b.Encrypt(x.fre, x.fre) + x.outUsed = 0 + } + + c := src[i] + dst[i] = x.fre[x.outUsed] ^ src[i] + x.fre[x.outUsed] = c + x.outUsed++ + } +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/one_pass_signature.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/one_pass_signature.go new file mode 100644 index 00000000000..1713503395e --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/one_pass_signature.go @@ -0,0 +1,73 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "crypto" + "encoding/binary" + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/s2k" + "io" + "strconv" +) + +// OnePassSignature represents a one-pass signature packet. See RFC 4880, +// section 5.4. +type OnePassSignature struct { + SigType SignatureType + Hash crypto.Hash + PubKeyAlgo PublicKeyAlgorithm + KeyId uint64 + IsLast bool +} + +const onePassSignatureVersion = 3 + +func (ops *OnePassSignature) parse(r io.Reader) (err error) { + var buf [13]byte + + _, err = readFull(r, buf[:]) + if err != nil { + return + } + if buf[0] != onePassSignatureVersion { + err = errors.UnsupportedError("one-pass-signature packet version " + strconv.Itoa(int(buf[0]))) + } + + var ok bool + ops.Hash, ok = s2k.HashIdToHash(buf[2]) + if !ok { + return errors.UnsupportedError("hash function: " + strconv.Itoa(int(buf[2]))) + } + + ops.SigType = SignatureType(buf[1]) + ops.PubKeyAlgo = PublicKeyAlgorithm(buf[3]) + ops.KeyId = binary.BigEndian.Uint64(buf[4:12]) + ops.IsLast = buf[12] != 0 + return +} + +// Serialize marshals the given OnePassSignature to w. +func (ops *OnePassSignature) Serialize(w io.Writer) error { + var buf [13]byte + buf[0] = onePassSignatureVersion + buf[1] = uint8(ops.SigType) + var ok bool + buf[2], ok = s2k.HashToHashId(ops.Hash) + if !ok { + return errors.UnsupportedError("hash type: " + strconv.Itoa(int(ops.Hash))) + } + buf[3] = uint8(ops.PubKeyAlgo) + binary.BigEndian.PutUint64(buf[4:12], ops.KeyId) + if ops.IsLast { + buf[12] = 1 + } + + if err := serializeHeader(w, packetTypeOnePassSignature, len(buf)); err != nil { + return err + } + _, err := w.Write(buf[:]) + return err +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/opaque.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/opaque.go new file mode 100644 index 00000000000..456d807f255 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/opaque.go @@ -0,0 +1,162 @@ +// Copyright 2012 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "bytes" + "io" + "io/ioutil" + + "golang.org/x/crypto/openpgp/errors" +) + +// OpaquePacket represents an OpenPGP packet as raw, unparsed data. This is +// useful for splitting and storing the original packet contents separately, +// handling unsupported packet types or accessing parts of the packet not yet +// implemented by this package. +type OpaquePacket struct { + // Packet type + Tag uint8 + // Reason why the packet was parsed opaquely + Reason error + // Binary contents of the packet data + Contents []byte +} + +func (op *OpaquePacket) parse(r io.Reader) (err error) { + op.Contents, err = ioutil.ReadAll(r) + return +} + +// Serialize marshals the packet to a writer in its original form, including +// the packet header. +func (op *OpaquePacket) Serialize(w io.Writer) (err error) { + err = serializeHeader(w, packetType(op.Tag), len(op.Contents)) + if err == nil { + _, err = w.Write(op.Contents) + } + return +} + +// Parse attempts to parse the opaque contents into a structure supported by +// this package. If the packet is not known then the result will be another +// OpaquePacket. +func (op *OpaquePacket) Parse() (p Packet, err error) { + hdr := bytes.NewBuffer(nil) + err = serializeHeader(hdr, packetType(op.Tag), len(op.Contents)) + if err != nil { + op.Reason = err + return op, err + } + p, err = Read(io.MultiReader(hdr, bytes.NewBuffer(op.Contents))) + if err != nil { + op.Reason = err + p = op + } + return +} + +// OpaqueReader reads OpaquePackets from an io.Reader. +type OpaqueReader struct { + r io.Reader +} + +func NewOpaqueReader(r io.Reader) *OpaqueReader { + return &OpaqueReader{r: r} +} + +// Read the next OpaquePacket. +func (or *OpaqueReader) Next() (op *OpaquePacket, err error) { + tag, _, contents, err := readHeader(or.r) + if err != nil { + return + } + op = &OpaquePacket{Tag: uint8(tag), Reason: err} + err = op.parse(contents) + if err != nil { + consumeAll(contents) + } + return +} + +// OpaqueSubpacket represents an unparsed OpenPGP subpacket, +// as found in signature and user attribute packets. +type OpaqueSubpacket struct { + SubType uint8 + Contents []byte +} + +// OpaqueSubpackets extracts opaque, unparsed OpenPGP subpackets from +// their byte representation. +func OpaqueSubpackets(contents []byte) (result []*OpaqueSubpacket, err error) { + var ( + subHeaderLen int + subPacket *OpaqueSubpacket + ) + for len(contents) > 0 { + subHeaderLen, subPacket, err = nextSubpacket(contents) + if err != nil { + break + } + result = append(result, subPacket) + contents = contents[subHeaderLen+len(subPacket.Contents):] + } + return +} + +func nextSubpacket(contents []byte) (subHeaderLen int, subPacket *OpaqueSubpacket, err error) { + // RFC 4880, section 5.2.3.1 + var subLen uint32 + if len(contents) < 1 { + goto Truncated + } + subPacket = &OpaqueSubpacket{} + switch { + case contents[0] < 192: + subHeaderLen = 2 // 1 length byte, 1 subtype byte + if len(contents) < subHeaderLen { + goto Truncated + } + subLen = uint32(contents[0]) + contents = contents[1:] + case contents[0] < 255: + subHeaderLen = 3 // 2 length bytes, 1 subtype + if len(contents) < subHeaderLen { + goto Truncated + } + subLen = uint32(contents[0]-192)<<8 + uint32(contents[1]) + 192 + contents = contents[2:] + default: + subHeaderLen = 6 // 5 length bytes, 1 subtype + if len(contents) < subHeaderLen { + goto Truncated + } + subLen = uint32(contents[1])<<24 | + uint32(contents[2])<<16 | + uint32(contents[3])<<8 | + uint32(contents[4]) + contents = contents[5:] + } + if subLen > uint32(len(contents)) || subLen == 0 { + goto Truncated + } + subPacket.SubType = contents[0] + subPacket.Contents = contents[1:subLen] + return +Truncated: + err = errors.StructuralError("subpacket truncated") + return +} + +func (osp *OpaqueSubpacket) Serialize(w io.Writer) (err error) { + buf := make([]byte, 6) + n := serializeSubpacketLength(buf, len(osp.Contents)+1) + buf[n] = osp.SubType + if _, err = w.Write(buf[:n+1]); err != nil { + return + } + _, err = w.Write(osp.Contents) + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/packet.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/packet.go new file mode 100644 index 00000000000..3eded93f042 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/packet.go @@ -0,0 +1,537 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package packet implements parsing and serialization of OpenPGP packets, as +// specified in RFC 4880. +package packet // import "golang.org/x/crypto/openpgp/packet" + +import ( + "bufio" + "crypto/aes" + "crypto/cipher" + "crypto/des" + "golang.org/x/crypto/cast5" + "golang.org/x/crypto/openpgp/errors" + "io" + "math/big" +) + +// readFull is the same as io.ReadFull except that reading zero bytes returns +// ErrUnexpectedEOF rather than EOF. +func readFull(r io.Reader, buf []byte) (n int, err error) { + n, err = io.ReadFull(r, buf) + if err == io.EOF { + err = io.ErrUnexpectedEOF + } + return +} + +// readLength reads an OpenPGP length from r. See RFC 4880, section 4.2.2. +func readLength(r io.Reader) (length int64, isPartial bool, err error) { + var buf [4]byte + _, err = readFull(r, buf[:1]) + if err != nil { + return + } + switch { + case buf[0] < 192: + length = int64(buf[0]) + case buf[0] < 224: + length = int64(buf[0]-192) << 8 + _, err = readFull(r, buf[0:1]) + if err != nil { + return + } + length += int64(buf[0]) + 192 + case buf[0] < 255: + length = int64(1) << (buf[0] & 0x1f) + isPartial = true + default: + _, err = readFull(r, buf[0:4]) + if err != nil { + return + } + length = int64(buf[0])<<24 | + int64(buf[1])<<16 | + int64(buf[2])<<8 | + int64(buf[3]) + } + return +} + +// partialLengthReader wraps an io.Reader and handles OpenPGP partial lengths. +// The continuation lengths are parsed and removed from the stream and EOF is +// returned at the end of the packet. See RFC 4880, section 4.2.2.4. +type partialLengthReader struct { + r io.Reader + remaining int64 + isPartial bool +} + +func (r *partialLengthReader) Read(p []byte) (n int, err error) { + for r.remaining == 0 { + if !r.isPartial { + return 0, io.EOF + } + r.remaining, r.isPartial, err = readLength(r.r) + if err != nil { + return 0, err + } + } + + toRead := int64(len(p)) + if toRead > r.remaining { + toRead = r.remaining + } + + n, err = r.r.Read(p[:int(toRead)]) + r.remaining -= int64(n) + if n < int(toRead) && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return +} + +// partialLengthWriter writes a stream of data using OpenPGP partial lengths. +// See RFC 4880, section 4.2.2.4. +type partialLengthWriter struct { + w io.WriteCloser + lengthByte [1]byte +} + +func (w *partialLengthWriter) Write(p []byte) (n int, err error) { + for len(p) > 0 { + for power := uint(14); power < 32; power-- { + l := 1 << power + if len(p) >= l { + w.lengthByte[0] = 224 + uint8(power) + _, err = w.w.Write(w.lengthByte[:]) + if err != nil { + return + } + var m int + m, err = w.w.Write(p[:l]) + n += m + if err != nil { + return + } + p = p[l:] + break + } + } + } + return +} + +func (w *partialLengthWriter) Close() error { + w.lengthByte[0] = 0 + _, err := w.w.Write(w.lengthByte[:]) + if err != nil { + return err + } + return w.w.Close() +} + +// A spanReader is an io.LimitReader, but it returns ErrUnexpectedEOF if the +// underlying Reader returns EOF before the limit has been reached. +type spanReader struct { + r io.Reader + n int64 +} + +func (l *spanReader) Read(p []byte) (n int, err error) { + if l.n <= 0 { + return 0, io.EOF + } + if int64(len(p)) > l.n { + p = p[0:l.n] + } + n, err = l.r.Read(p) + l.n -= int64(n) + if l.n > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return +} + +// readHeader parses a packet header and returns an io.Reader which will return +// the contents of the packet. See RFC 4880, section 4.2. +func readHeader(r io.Reader) (tag packetType, length int64, contents io.Reader, err error) { + var buf [4]byte + _, err = io.ReadFull(r, buf[:1]) + if err != nil { + return + } + if buf[0]&0x80 == 0 { + err = errors.StructuralError("tag byte does not have MSB set") + return + } + if buf[0]&0x40 == 0 { + // Old format packet + tag = packetType((buf[0] & 0x3f) >> 2) + lengthType := buf[0] & 3 + if lengthType == 3 { + length = -1 + contents = r + return + } + lengthBytes := 1 << lengthType + _, err = readFull(r, buf[0:lengthBytes]) + if err != nil { + return + } + for i := 0; i < lengthBytes; i++ { + length <<= 8 + length |= int64(buf[i]) + } + contents = &spanReader{r, length} + return + } + + // New format packet + tag = packetType(buf[0] & 0x3f) + length, isPartial, err := readLength(r) + if err != nil { + return + } + if isPartial { + contents = &partialLengthReader{ + remaining: length, + isPartial: true, + r: r, + } + length = -1 + } else { + contents = &spanReader{r, length} + } + return +} + +// serializeHeader writes an OpenPGP packet header to w. See RFC 4880, section +// 4.2. +func serializeHeader(w io.Writer, ptype packetType, length int) (err error) { + var buf [6]byte + var n int + + buf[0] = 0x80 | 0x40 | byte(ptype) + if length < 192 { + buf[1] = byte(length) + n = 2 + } else if length < 8384 { + length -= 192 + buf[1] = 192 + byte(length>>8) + buf[2] = byte(length) + n = 3 + } else { + buf[1] = 255 + buf[2] = byte(length >> 24) + buf[3] = byte(length >> 16) + buf[4] = byte(length >> 8) + buf[5] = byte(length) + n = 6 + } + + _, err = w.Write(buf[:n]) + return +} + +// serializeStreamHeader writes an OpenPGP packet header to w where the +// length of the packet is unknown. It returns a io.WriteCloser which can be +// used to write the contents of the packet. See RFC 4880, section 4.2. +func serializeStreamHeader(w io.WriteCloser, ptype packetType) (out io.WriteCloser, err error) { + var buf [1]byte + buf[0] = 0x80 | 0x40 | byte(ptype) + _, err = w.Write(buf[:]) + if err != nil { + return + } + out = &partialLengthWriter{w: w} + return +} + +// Packet represents an OpenPGP packet. Users are expected to try casting +// instances of this interface to specific packet types. +type Packet interface { + parse(io.Reader) error +} + +// consumeAll reads from the given Reader until error, returning the number of +// bytes read. +func consumeAll(r io.Reader) (n int64, err error) { + var m int + var buf [1024]byte + + for { + m, err = r.Read(buf[:]) + n += int64(m) + if err == io.EOF { + err = nil + return + } + if err != nil { + return + } + } +} + +// packetType represents the numeric ids of the different OpenPGP packet types. See +// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-2 +type packetType uint8 + +const ( + packetTypeEncryptedKey packetType = 1 + packetTypeSignature packetType = 2 + packetTypeSymmetricKeyEncrypted packetType = 3 + packetTypeOnePassSignature packetType = 4 + packetTypePrivateKey packetType = 5 + packetTypePublicKey packetType = 6 + packetTypePrivateSubkey packetType = 7 + packetTypeCompressed packetType = 8 + packetTypeSymmetricallyEncrypted packetType = 9 + packetTypeLiteralData packetType = 11 + packetTypeUserId packetType = 13 + packetTypePublicSubkey packetType = 14 + packetTypeUserAttribute packetType = 17 + packetTypeSymmetricallyEncryptedMDC packetType = 18 +) + +// peekVersion detects the version of a public key packet about to +// be read. A bufio.Reader at the original position of the io.Reader +// is returned. +func peekVersion(r io.Reader) (bufr *bufio.Reader, ver byte, err error) { + bufr = bufio.NewReader(r) + var verBuf []byte + if verBuf, err = bufr.Peek(1); err != nil { + return + } + ver = verBuf[0] + return +} + +// Read reads a single OpenPGP packet from the given io.Reader. If there is an +// error parsing a packet, the whole packet is consumed from the input. +func Read(r io.Reader) (p Packet, err error) { + tag, _, contents, err := readHeader(r) + if err != nil { + return + } + + switch tag { + case packetTypeEncryptedKey: + p = new(EncryptedKey) + case packetTypeSignature: + var version byte + // Detect signature version + if contents, version, err = peekVersion(contents); err != nil { + return + } + if version < 4 { + p = new(SignatureV3) + } else { + p = new(Signature) + } + case packetTypeSymmetricKeyEncrypted: + p = new(SymmetricKeyEncrypted) + case packetTypeOnePassSignature: + p = new(OnePassSignature) + case packetTypePrivateKey, packetTypePrivateSubkey: + pk := new(PrivateKey) + if tag == packetTypePrivateSubkey { + pk.IsSubkey = true + } + p = pk + case packetTypePublicKey, packetTypePublicSubkey: + var version byte + if contents, version, err = peekVersion(contents); err != nil { + return + } + isSubkey := tag == packetTypePublicSubkey + if version < 4 { + p = &PublicKeyV3{IsSubkey: isSubkey} + } else { + p = &PublicKey{IsSubkey: isSubkey} + } + case packetTypeCompressed: + p = new(Compressed) + case packetTypeSymmetricallyEncrypted: + p = new(SymmetricallyEncrypted) + case packetTypeLiteralData: + p = new(LiteralData) + case packetTypeUserId: + p = new(UserId) + case packetTypeUserAttribute: + p = new(UserAttribute) + case packetTypeSymmetricallyEncryptedMDC: + se := new(SymmetricallyEncrypted) + se.MDC = true + p = se + default: + err = errors.UnknownPacketTypeError(tag) + } + if p != nil { + err = p.parse(contents) + } + if err != nil { + consumeAll(contents) + } + return +} + +// SignatureType represents the different semantic meanings of an OpenPGP +// signature. See RFC 4880, section 5.2.1. +type SignatureType uint8 + +const ( + SigTypeBinary SignatureType = 0 + SigTypeText = 1 + SigTypeGenericCert = 0x10 + SigTypePersonaCert = 0x11 + SigTypeCasualCert = 0x12 + SigTypePositiveCert = 0x13 + SigTypeSubkeyBinding = 0x18 + SigTypePrimaryKeyBinding = 0x19 + SigTypeDirectSignature = 0x1F + SigTypeKeyRevocation = 0x20 + SigTypeSubkeyRevocation = 0x28 +) + +// PublicKeyAlgorithm represents the different public key system specified for +// OpenPGP. See +// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-12 +type PublicKeyAlgorithm uint8 + +const ( + PubKeyAlgoRSA PublicKeyAlgorithm = 1 + PubKeyAlgoRSAEncryptOnly PublicKeyAlgorithm = 2 + PubKeyAlgoRSASignOnly PublicKeyAlgorithm = 3 + PubKeyAlgoElGamal PublicKeyAlgorithm = 16 + PubKeyAlgoDSA PublicKeyAlgorithm = 17 + // RFC 6637, Section 5. + PubKeyAlgoECDH PublicKeyAlgorithm = 18 + PubKeyAlgoECDSA PublicKeyAlgorithm = 19 +) + +// CanEncrypt returns true if it's possible to encrypt a message to a public +// key of the given type. +func (pka PublicKeyAlgorithm) CanEncrypt() bool { + switch pka { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoElGamal: + return true + } + return false +} + +// CanSign returns true if it's possible for a public key of the given type to +// sign a message. +func (pka PublicKeyAlgorithm) CanSign() bool { + switch pka { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA, PubKeyAlgoECDSA: + return true + } + return false +} + +// CipherFunction represents the different block ciphers specified for OpenPGP. See +// http://www.iana.org/assignments/pgp-parameters/pgp-parameters.xhtml#pgp-parameters-13 +type CipherFunction uint8 + +const ( + Cipher3DES CipherFunction = 2 + CipherCAST5 CipherFunction = 3 + CipherAES128 CipherFunction = 7 + CipherAES192 CipherFunction = 8 + CipherAES256 CipherFunction = 9 +) + +// KeySize returns the key size, in bytes, of cipher. +func (cipher CipherFunction) KeySize() int { + switch cipher { + case Cipher3DES: + return 24 + case CipherCAST5: + return cast5.KeySize + case CipherAES128: + return 16 + case CipherAES192: + return 24 + case CipherAES256: + return 32 + } + return 0 +} + +// blockSize returns the block size, in bytes, of cipher. +func (cipher CipherFunction) blockSize() int { + switch cipher { + case Cipher3DES: + return des.BlockSize + case CipherCAST5: + return 8 + case CipherAES128, CipherAES192, CipherAES256: + return 16 + } + return 0 +} + +// new returns a fresh instance of the given cipher. +func (cipher CipherFunction) new(key []byte) (block cipher.Block) { + switch cipher { + case Cipher3DES: + block, _ = des.NewTripleDESCipher(key) + case CipherCAST5: + block, _ = cast5.NewCipher(key) + case CipherAES128, CipherAES192, CipherAES256: + block, _ = aes.NewCipher(key) + } + return +} + +// readMPI reads a big integer from r. The bit length returned is the bit +// length that was specified in r. This is preserved so that the integer can be +// reserialized exactly. +func readMPI(r io.Reader) (mpi []byte, bitLength uint16, err error) { + var buf [2]byte + _, err = readFull(r, buf[0:]) + if err != nil { + return + } + bitLength = uint16(buf[0])<<8 | uint16(buf[1]) + numBytes := (int(bitLength) + 7) / 8 + mpi = make([]byte, numBytes) + _, err = readFull(r, mpi) + return +} + +// mpiLength returns the length of the given *big.Int when serialized as an +// MPI. +func mpiLength(n *big.Int) (mpiLengthInBytes int) { + mpiLengthInBytes = 2 /* MPI length */ + mpiLengthInBytes += (n.BitLen() + 7) / 8 + return +} + +// writeMPI serializes a big integer to w. +func writeMPI(w io.Writer, bitLength uint16, mpiBytes []byte) (err error) { + _, err = w.Write([]byte{byte(bitLength >> 8), byte(bitLength)}) + if err == nil { + _, err = w.Write(mpiBytes) + } + return +} + +// writeBig serializes a *big.Int to w. +func writeBig(w io.Writer, i *big.Int) error { + return writeMPI(w, uint16(i.BitLen()), i.Bytes()) +} + +// CompressionAlgo Represents the different compression algorithms +// supported by OpenPGP (except for BZIP2, which is not currently +// supported). See Section 9.3 of RFC 4880. +type CompressionAlgo uint8 + +const ( + CompressionNone CompressionAlgo = 0 + CompressionZIP CompressionAlgo = 1 + CompressionZLIB CompressionAlgo = 2 +) diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/private_key.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/private_key.go new file mode 100644 index 00000000000..34734cc63d1 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/private_key.go @@ -0,0 +1,380 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "bytes" + "crypto" + "crypto/cipher" + "crypto/dsa" + "crypto/ecdsa" + "crypto/rsa" + "crypto/sha1" + "io" + "io/ioutil" + "math/big" + "strconv" + "time" + + "golang.org/x/crypto/openpgp/elgamal" + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/s2k" +) + +// PrivateKey represents a possibly encrypted private key. See RFC 4880, +// section 5.5.3. +type PrivateKey struct { + PublicKey + Encrypted bool // if true then the private key is unavailable until Decrypt has been called. + encryptedData []byte + cipher CipherFunction + s2k func(out, in []byte) + PrivateKey interface{} // An *{rsa|dsa|ecdsa}.PrivateKey or a crypto.Signer. + sha1Checksum bool + iv []byte +} + +func NewRSAPrivateKey(currentTime time.Time, priv *rsa.PrivateKey) *PrivateKey { + pk := new(PrivateKey) + pk.PublicKey = *NewRSAPublicKey(currentTime, &priv.PublicKey) + pk.PrivateKey = priv + return pk +} + +func NewDSAPrivateKey(currentTime time.Time, priv *dsa.PrivateKey) *PrivateKey { + pk := new(PrivateKey) + pk.PublicKey = *NewDSAPublicKey(currentTime, &priv.PublicKey) + pk.PrivateKey = priv + return pk +} + +func NewElGamalPrivateKey(currentTime time.Time, priv *elgamal.PrivateKey) *PrivateKey { + pk := new(PrivateKey) + pk.PublicKey = *NewElGamalPublicKey(currentTime, &priv.PublicKey) + pk.PrivateKey = priv + return pk +} + +func NewECDSAPrivateKey(currentTime time.Time, priv *ecdsa.PrivateKey) *PrivateKey { + pk := new(PrivateKey) + pk.PublicKey = *NewECDSAPublicKey(currentTime, &priv.PublicKey) + pk.PrivateKey = priv + return pk +} + +// NewSignerPrivateKey creates a sign-only PrivateKey from a crypto.Signer that +// implements RSA or ECDSA. +func NewSignerPrivateKey(currentTime time.Time, signer crypto.Signer) *PrivateKey { + pk := new(PrivateKey) + switch pubkey := signer.Public().(type) { + case rsa.PublicKey: + pk.PublicKey = *NewRSAPublicKey(currentTime, &pubkey) + pk.PubKeyAlgo = PubKeyAlgoRSASignOnly + case ecdsa.PublicKey: + pk.PublicKey = *NewECDSAPublicKey(currentTime, &pubkey) + default: + panic("openpgp: unknown crypto.Signer type in NewSignerPrivateKey") + } + pk.PrivateKey = signer + return pk +} + +func (pk *PrivateKey) parse(r io.Reader) (err error) { + err = (&pk.PublicKey).parse(r) + if err != nil { + return + } + var buf [1]byte + _, err = readFull(r, buf[:]) + if err != nil { + return + } + + s2kType := buf[0] + + switch s2kType { + case 0: + pk.s2k = nil + pk.Encrypted = false + case 254, 255: + _, err = readFull(r, buf[:]) + if err != nil { + return + } + pk.cipher = CipherFunction(buf[0]) + pk.Encrypted = true + pk.s2k, err = s2k.Parse(r) + if err != nil { + return + } + if s2kType == 254 { + pk.sha1Checksum = true + } + default: + return errors.UnsupportedError("deprecated s2k function in private key") + } + + if pk.Encrypted { + blockSize := pk.cipher.blockSize() + if blockSize == 0 { + return errors.UnsupportedError("unsupported cipher in private key: " + strconv.Itoa(int(pk.cipher))) + } + pk.iv = make([]byte, blockSize) + _, err = readFull(r, pk.iv) + if err != nil { + return + } + } + + pk.encryptedData, err = ioutil.ReadAll(r) + if err != nil { + return + } + + if !pk.Encrypted { + return pk.parsePrivateKey(pk.encryptedData) + } + + return +} + +func mod64kHash(d []byte) uint16 { + var h uint16 + for _, b := range d { + h += uint16(b) + } + return h +} + +func (pk *PrivateKey) Serialize(w io.Writer) (err error) { + // TODO(agl): support encrypted private keys + buf := bytes.NewBuffer(nil) + err = pk.PublicKey.serializeWithoutHeaders(buf) + if err != nil { + return + } + buf.WriteByte(0 /* no encryption */) + + privateKeyBuf := bytes.NewBuffer(nil) + + switch priv := pk.PrivateKey.(type) { + case *rsa.PrivateKey: + err = serializeRSAPrivateKey(privateKeyBuf, priv) + case *dsa.PrivateKey: + err = serializeDSAPrivateKey(privateKeyBuf, priv) + case *elgamal.PrivateKey: + err = serializeElGamalPrivateKey(privateKeyBuf, priv) + case *ecdsa.PrivateKey: + err = serializeECDSAPrivateKey(privateKeyBuf, priv) + default: + err = errors.InvalidArgumentError("unknown private key type") + } + if err != nil { + return + } + + ptype := packetTypePrivateKey + contents := buf.Bytes() + privateKeyBytes := privateKeyBuf.Bytes() + if pk.IsSubkey { + ptype = packetTypePrivateSubkey + } + err = serializeHeader(w, ptype, len(contents)+len(privateKeyBytes)+2) + if err != nil { + return + } + _, err = w.Write(contents) + if err != nil { + return + } + _, err = w.Write(privateKeyBytes) + if err != nil { + return + } + + checksum := mod64kHash(privateKeyBytes) + var checksumBytes [2]byte + checksumBytes[0] = byte(checksum >> 8) + checksumBytes[1] = byte(checksum) + _, err = w.Write(checksumBytes[:]) + + return +} + +func serializeRSAPrivateKey(w io.Writer, priv *rsa.PrivateKey) error { + err := writeBig(w, priv.D) + if err != nil { + return err + } + err = writeBig(w, priv.Primes[1]) + if err != nil { + return err + } + err = writeBig(w, priv.Primes[0]) + if err != nil { + return err + } + return writeBig(w, priv.Precomputed.Qinv) +} + +func serializeDSAPrivateKey(w io.Writer, priv *dsa.PrivateKey) error { + return writeBig(w, priv.X) +} + +func serializeElGamalPrivateKey(w io.Writer, priv *elgamal.PrivateKey) error { + return writeBig(w, priv.X) +} + +func serializeECDSAPrivateKey(w io.Writer, priv *ecdsa.PrivateKey) error { + return writeBig(w, priv.D) +} + +// Decrypt decrypts an encrypted private key using a passphrase. +func (pk *PrivateKey) Decrypt(passphrase []byte) error { + if !pk.Encrypted { + return nil + } + + key := make([]byte, pk.cipher.KeySize()) + pk.s2k(key, passphrase) + block := pk.cipher.new(key) + cfb := cipher.NewCFBDecrypter(block, pk.iv) + + data := make([]byte, len(pk.encryptedData)) + cfb.XORKeyStream(data, pk.encryptedData) + + if pk.sha1Checksum { + if len(data) < sha1.Size { + return errors.StructuralError("truncated private key data") + } + h := sha1.New() + h.Write(data[:len(data)-sha1.Size]) + sum := h.Sum(nil) + if !bytes.Equal(sum, data[len(data)-sha1.Size:]) { + return errors.StructuralError("private key checksum failure") + } + data = data[:len(data)-sha1.Size] + } else { + if len(data) < 2 { + return errors.StructuralError("truncated private key data") + } + var sum uint16 + for i := 0; i < len(data)-2; i++ { + sum += uint16(data[i]) + } + if data[len(data)-2] != uint8(sum>>8) || + data[len(data)-1] != uint8(sum) { + return errors.StructuralError("private key checksum failure") + } + data = data[:len(data)-2] + } + + return pk.parsePrivateKey(data) +} + +func (pk *PrivateKey) parsePrivateKey(data []byte) (err error) { + switch pk.PublicKey.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoRSAEncryptOnly: + return pk.parseRSAPrivateKey(data) + case PubKeyAlgoDSA: + return pk.parseDSAPrivateKey(data) + case PubKeyAlgoElGamal: + return pk.parseElGamalPrivateKey(data) + case PubKeyAlgoECDSA: + return pk.parseECDSAPrivateKey(data) + } + panic("impossible") +} + +func (pk *PrivateKey) parseRSAPrivateKey(data []byte) (err error) { + rsaPub := pk.PublicKey.PublicKey.(*rsa.PublicKey) + rsaPriv := new(rsa.PrivateKey) + rsaPriv.PublicKey = *rsaPub + + buf := bytes.NewBuffer(data) + d, _, err := readMPI(buf) + if err != nil { + return + } + p, _, err := readMPI(buf) + if err != nil { + return + } + q, _, err := readMPI(buf) + if err != nil { + return + } + + rsaPriv.D = new(big.Int).SetBytes(d) + rsaPriv.Primes = make([]*big.Int, 2) + rsaPriv.Primes[0] = new(big.Int).SetBytes(p) + rsaPriv.Primes[1] = new(big.Int).SetBytes(q) + if err := rsaPriv.Validate(); err != nil { + return err + } + rsaPriv.Precompute() + pk.PrivateKey = rsaPriv + pk.Encrypted = false + pk.encryptedData = nil + + return nil +} + +func (pk *PrivateKey) parseDSAPrivateKey(data []byte) (err error) { + dsaPub := pk.PublicKey.PublicKey.(*dsa.PublicKey) + dsaPriv := new(dsa.PrivateKey) + dsaPriv.PublicKey = *dsaPub + + buf := bytes.NewBuffer(data) + x, _, err := readMPI(buf) + if err != nil { + return + } + + dsaPriv.X = new(big.Int).SetBytes(x) + pk.PrivateKey = dsaPriv + pk.Encrypted = false + pk.encryptedData = nil + + return nil +} + +func (pk *PrivateKey) parseElGamalPrivateKey(data []byte) (err error) { + pub := pk.PublicKey.PublicKey.(*elgamal.PublicKey) + priv := new(elgamal.PrivateKey) + priv.PublicKey = *pub + + buf := bytes.NewBuffer(data) + x, _, err := readMPI(buf) + if err != nil { + return + } + + priv.X = new(big.Int).SetBytes(x) + pk.PrivateKey = priv + pk.Encrypted = false + pk.encryptedData = nil + + return nil +} + +func (pk *PrivateKey) parseECDSAPrivateKey(data []byte) (err error) { + ecdsaPub := pk.PublicKey.PublicKey.(*ecdsa.PublicKey) + + buf := bytes.NewBuffer(data) + d, _, err := readMPI(buf) + if err != nil { + return + } + + pk.PrivateKey = &ecdsa.PrivateKey{ + PublicKey: *ecdsaPub, + D: new(big.Int).SetBytes(d), + } + pk.Encrypted = false + pk.encryptedData = nil + + return nil +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key.go new file mode 100644 index 00000000000..ead26233dda --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key.go @@ -0,0 +1,748 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "bytes" + "crypto" + "crypto/dsa" + "crypto/ecdsa" + "crypto/elliptic" + "crypto/rsa" + "crypto/sha1" + _ "crypto/sha256" + _ "crypto/sha512" + "encoding/binary" + "fmt" + "hash" + "io" + "math/big" + "strconv" + "time" + + "golang.org/x/crypto/openpgp/elgamal" + "golang.org/x/crypto/openpgp/errors" +) + +var ( + // NIST curve P-256 + oidCurveP256 []byte = []byte{0x2A, 0x86, 0x48, 0xCE, 0x3D, 0x03, 0x01, 0x07} + // NIST curve P-384 + oidCurveP384 []byte = []byte{0x2B, 0x81, 0x04, 0x00, 0x22} + // NIST curve P-521 + oidCurveP521 []byte = []byte{0x2B, 0x81, 0x04, 0x00, 0x23} +) + +const maxOIDLength = 8 + +// ecdsaKey stores the algorithm-specific fields for ECDSA keys. +// as defined in RFC 6637, Section 9. +type ecdsaKey struct { + // oid contains the OID byte sequence identifying the elliptic curve used + oid []byte + // p contains the elliptic curve point that represents the public key + p parsedMPI +} + +// parseOID reads the OID for the curve as defined in RFC 6637, Section 9. +func parseOID(r io.Reader) (oid []byte, err error) { + buf := make([]byte, maxOIDLength) + if _, err = readFull(r, buf[:1]); err != nil { + return + } + oidLen := buf[0] + if int(oidLen) > len(buf) { + err = errors.UnsupportedError("invalid oid length: " + strconv.Itoa(int(oidLen))) + return + } + oid = buf[:oidLen] + _, err = readFull(r, oid) + return +} + +func (f *ecdsaKey) parse(r io.Reader) (err error) { + if f.oid, err = parseOID(r); err != nil { + return err + } + f.p.bytes, f.p.bitLength, err = readMPI(r) + return +} + +func (f *ecdsaKey) serialize(w io.Writer) (err error) { + buf := make([]byte, maxOIDLength+1) + buf[0] = byte(len(f.oid)) + copy(buf[1:], f.oid) + if _, err = w.Write(buf[:len(f.oid)+1]); err != nil { + return + } + return writeMPIs(w, f.p) +} + +func (f *ecdsaKey) newECDSA() (*ecdsa.PublicKey, error) { + var c elliptic.Curve + if bytes.Equal(f.oid, oidCurveP256) { + c = elliptic.P256() + } else if bytes.Equal(f.oid, oidCurveP384) { + c = elliptic.P384() + } else if bytes.Equal(f.oid, oidCurveP521) { + c = elliptic.P521() + } else { + return nil, errors.UnsupportedError(fmt.Sprintf("unsupported oid: %x", f.oid)) + } + x, y := elliptic.Unmarshal(c, f.p.bytes) + if x == nil { + return nil, errors.UnsupportedError("failed to parse EC point") + } + return &ecdsa.PublicKey{Curve: c, X: x, Y: y}, nil +} + +func (f *ecdsaKey) byteLen() int { + return 1 + len(f.oid) + 2 + len(f.p.bytes) +} + +type kdfHashFunction byte +type kdfAlgorithm byte + +// ecdhKdf stores key derivation function parameters +// used for ECDH encryption. See RFC 6637, Section 9. +type ecdhKdf struct { + KdfHash kdfHashFunction + KdfAlgo kdfAlgorithm +} + +func (f *ecdhKdf) parse(r io.Reader) (err error) { + buf := make([]byte, 1) + if _, err = readFull(r, buf); err != nil { + return + } + kdfLen := int(buf[0]) + if kdfLen < 3 { + return errors.UnsupportedError("Unsupported ECDH KDF length: " + strconv.Itoa(kdfLen)) + } + buf = make([]byte, kdfLen) + if _, err = readFull(r, buf); err != nil { + return + } + reserved := int(buf[0]) + f.KdfHash = kdfHashFunction(buf[1]) + f.KdfAlgo = kdfAlgorithm(buf[2]) + if reserved != 0x01 { + return errors.UnsupportedError("Unsupported KDF reserved field: " + strconv.Itoa(reserved)) + } + return +} + +func (f *ecdhKdf) serialize(w io.Writer) (err error) { + buf := make([]byte, 4) + // See RFC 6637, Section 9, Algorithm-Specific Fields for ECDH keys. + buf[0] = byte(0x03) // Length of the following fields + buf[1] = byte(0x01) // Reserved for future extensions, must be 1 for now + buf[2] = byte(f.KdfHash) + buf[3] = byte(f.KdfAlgo) + _, err = w.Write(buf[:]) + return +} + +func (f *ecdhKdf) byteLen() int { + return 4 +} + +// PublicKey represents an OpenPGP public key. See RFC 4880, section 5.5.2. +type PublicKey struct { + CreationTime time.Time + PubKeyAlgo PublicKeyAlgorithm + PublicKey interface{} // *rsa.PublicKey, *dsa.PublicKey or *ecdsa.PublicKey + Fingerprint [20]byte + KeyId uint64 + IsSubkey bool + + n, e, p, q, g, y parsedMPI + + // RFC 6637 fields + ec *ecdsaKey + ecdh *ecdhKdf +} + +// signingKey provides a convenient abstraction over signature verification +// for v3 and v4 public keys. +type signingKey interface { + SerializeSignaturePrefix(io.Writer) + serializeWithoutHeaders(io.Writer) error +} + +func fromBig(n *big.Int) parsedMPI { + return parsedMPI{ + bytes: n.Bytes(), + bitLength: uint16(n.BitLen()), + } +} + +// NewRSAPublicKey returns a PublicKey that wraps the given rsa.PublicKey. +func NewRSAPublicKey(creationTime time.Time, pub *rsa.PublicKey) *PublicKey { + pk := &PublicKey{ + CreationTime: creationTime, + PubKeyAlgo: PubKeyAlgoRSA, + PublicKey: pub, + n: fromBig(pub.N), + e: fromBig(big.NewInt(int64(pub.E))), + } + + pk.setFingerPrintAndKeyId() + return pk +} + +// NewDSAPublicKey returns a PublicKey that wraps the given dsa.PublicKey. +func NewDSAPublicKey(creationTime time.Time, pub *dsa.PublicKey) *PublicKey { + pk := &PublicKey{ + CreationTime: creationTime, + PubKeyAlgo: PubKeyAlgoDSA, + PublicKey: pub, + p: fromBig(pub.P), + q: fromBig(pub.Q), + g: fromBig(pub.G), + y: fromBig(pub.Y), + } + + pk.setFingerPrintAndKeyId() + return pk +} + +// NewElGamalPublicKey returns a PublicKey that wraps the given elgamal.PublicKey. +func NewElGamalPublicKey(creationTime time.Time, pub *elgamal.PublicKey) *PublicKey { + pk := &PublicKey{ + CreationTime: creationTime, + PubKeyAlgo: PubKeyAlgoElGamal, + PublicKey: pub, + p: fromBig(pub.P), + g: fromBig(pub.G), + y: fromBig(pub.Y), + } + + pk.setFingerPrintAndKeyId() + return pk +} + +func NewECDSAPublicKey(creationTime time.Time, pub *ecdsa.PublicKey) *PublicKey { + pk := &PublicKey{ + CreationTime: creationTime, + PubKeyAlgo: PubKeyAlgoECDSA, + PublicKey: pub, + ec: new(ecdsaKey), + } + + switch pub.Curve { + case elliptic.P256(): + pk.ec.oid = oidCurveP256 + case elliptic.P384(): + pk.ec.oid = oidCurveP384 + case elliptic.P521(): + pk.ec.oid = oidCurveP521 + default: + panic("unknown elliptic curve") + } + + pk.ec.p.bytes = elliptic.Marshal(pub.Curve, pub.X, pub.Y) + pk.ec.p.bitLength = uint16(8 * len(pk.ec.p.bytes)) + + pk.setFingerPrintAndKeyId() + return pk +} + +func (pk *PublicKey) parse(r io.Reader) (err error) { + // RFC 4880, section 5.5.2 + var buf [6]byte + _, err = readFull(r, buf[:]) + if err != nil { + return + } + if buf[0] != 4 { + return errors.UnsupportedError("public key version") + } + pk.CreationTime = time.Unix(int64(uint32(buf[1])<<24|uint32(buf[2])<<16|uint32(buf[3])<<8|uint32(buf[4])), 0) + pk.PubKeyAlgo = PublicKeyAlgorithm(buf[5]) + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + err = pk.parseRSA(r) + case PubKeyAlgoDSA: + err = pk.parseDSA(r) + case PubKeyAlgoElGamal: + err = pk.parseElGamal(r) + case PubKeyAlgoECDSA: + pk.ec = new(ecdsaKey) + if err = pk.ec.parse(r); err != nil { + return err + } + pk.PublicKey, err = pk.ec.newECDSA() + case PubKeyAlgoECDH: + pk.ec = new(ecdsaKey) + if err = pk.ec.parse(r); err != nil { + return + } + pk.ecdh = new(ecdhKdf) + if err = pk.ecdh.parse(r); err != nil { + return + } + // The ECDH key is stored in an ecdsa.PublicKey for convenience. + pk.PublicKey, err = pk.ec.newECDSA() + default: + err = errors.UnsupportedError("public key type: " + strconv.Itoa(int(pk.PubKeyAlgo))) + } + if err != nil { + return + } + + pk.setFingerPrintAndKeyId() + return +} + +func (pk *PublicKey) setFingerPrintAndKeyId() { + // RFC 4880, section 12.2 + fingerPrint := sha1.New() + pk.SerializeSignaturePrefix(fingerPrint) + pk.serializeWithoutHeaders(fingerPrint) + copy(pk.Fingerprint[:], fingerPrint.Sum(nil)) + pk.KeyId = binary.BigEndian.Uint64(pk.Fingerprint[12:20]) +} + +// parseRSA parses RSA public key material from the given Reader. See RFC 4880, +// section 5.5.2. +func (pk *PublicKey) parseRSA(r io.Reader) (err error) { + pk.n.bytes, pk.n.bitLength, err = readMPI(r) + if err != nil { + return + } + pk.e.bytes, pk.e.bitLength, err = readMPI(r) + if err != nil { + return + } + + if len(pk.e.bytes) > 3 { + err = errors.UnsupportedError("large public exponent") + return + } + rsa := &rsa.PublicKey{ + N: new(big.Int).SetBytes(pk.n.bytes), + E: 0, + } + for i := 0; i < len(pk.e.bytes); i++ { + rsa.E <<= 8 + rsa.E |= int(pk.e.bytes[i]) + } + pk.PublicKey = rsa + return +} + +// parseDSA parses DSA public key material from the given Reader. See RFC 4880, +// section 5.5.2. +func (pk *PublicKey) parseDSA(r io.Reader) (err error) { + pk.p.bytes, pk.p.bitLength, err = readMPI(r) + if err != nil { + return + } + pk.q.bytes, pk.q.bitLength, err = readMPI(r) + if err != nil { + return + } + pk.g.bytes, pk.g.bitLength, err = readMPI(r) + if err != nil { + return + } + pk.y.bytes, pk.y.bitLength, err = readMPI(r) + if err != nil { + return + } + + dsa := new(dsa.PublicKey) + dsa.P = new(big.Int).SetBytes(pk.p.bytes) + dsa.Q = new(big.Int).SetBytes(pk.q.bytes) + dsa.G = new(big.Int).SetBytes(pk.g.bytes) + dsa.Y = new(big.Int).SetBytes(pk.y.bytes) + pk.PublicKey = dsa + return +} + +// parseElGamal parses ElGamal public key material from the given Reader. See +// RFC 4880, section 5.5.2. +func (pk *PublicKey) parseElGamal(r io.Reader) (err error) { + pk.p.bytes, pk.p.bitLength, err = readMPI(r) + if err != nil { + return + } + pk.g.bytes, pk.g.bitLength, err = readMPI(r) + if err != nil { + return + } + pk.y.bytes, pk.y.bitLength, err = readMPI(r) + if err != nil { + return + } + + elgamal := new(elgamal.PublicKey) + elgamal.P = new(big.Int).SetBytes(pk.p.bytes) + elgamal.G = new(big.Int).SetBytes(pk.g.bytes) + elgamal.Y = new(big.Int).SetBytes(pk.y.bytes) + pk.PublicKey = elgamal + return +} + +// SerializeSignaturePrefix writes the prefix for this public key to the given Writer. +// The prefix is used when calculating a signature over this public key. See +// RFC 4880, section 5.2.4. +func (pk *PublicKey) SerializeSignaturePrefix(h io.Writer) { + var pLength uint16 + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + pLength += 2 + uint16(len(pk.n.bytes)) + pLength += 2 + uint16(len(pk.e.bytes)) + case PubKeyAlgoDSA: + pLength += 2 + uint16(len(pk.p.bytes)) + pLength += 2 + uint16(len(pk.q.bytes)) + pLength += 2 + uint16(len(pk.g.bytes)) + pLength += 2 + uint16(len(pk.y.bytes)) + case PubKeyAlgoElGamal: + pLength += 2 + uint16(len(pk.p.bytes)) + pLength += 2 + uint16(len(pk.g.bytes)) + pLength += 2 + uint16(len(pk.y.bytes)) + case PubKeyAlgoECDSA: + pLength += uint16(pk.ec.byteLen()) + case PubKeyAlgoECDH: + pLength += uint16(pk.ec.byteLen()) + pLength += uint16(pk.ecdh.byteLen()) + default: + panic("unknown public key algorithm") + } + pLength += 6 + h.Write([]byte{0x99, byte(pLength >> 8), byte(pLength)}) + return +} + +func (pk *PublicKey) Serialize(w io.Writer) (err error) { + length := 6 // 6 byte header + + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + length += 2 + len(pk.n.bytes) + length += 2 + len(pk.e.bytes) + case PubKeyAlgoDSA: + length += 2 + len(pk.p.bytes) + length += 2 + len(pk.q.bytes) + length += 2 + len(pk.g.bytes) + length += 2 + len(pk.y.bytes) + case PubKeyAlgoElGamal: + length += 2 + len(pk.p.bytes) + length += 2 + len(pk.g.bytes) + length += 2 + len(pk.y.bytes) + case PubKeyAlgoECDSA: + length += pk.ec.byteLen() + case PubKeyAlgoECDH: + length += pk.ec.byteLen() + length += pk.ecdh.byteLen() + default: + panic("unknown public key algorithm") + } + + packetType := packetTypePublicKey + if pk.IsSubkey { + packetType = packetTypePublicSubkey + } + err = serializeHeader(w, packetType, length) + if err != nil { + return + } + return pk.serializeWithoutHeaders(w) +} + +// serializeWithoutHeaders marshals the PublicKey to w in the form of an +// OpenPGP public key packet, not including the packet header. +func (pk *PublicKey) serializeWithoutHeaders(w io.Writer) (err error) { + var buf [6]byte + buf[0] = 4 + t := uint32(pk.CreationTime.Unix()) + buf[1] = byte(t >> 24) + buf[2] = byte(t >> 16) + buf[3] = byte(t >> 8) + buf[4] = byte(t) + buf[5] = byte(pk.PubKeyAlgo) + + _, err = w.Write(buf[:]) + if err != nil { + return + } + + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + return writeMPIs(w, pk.n, pk.e) + case PubKeyAlgoDSA: + return writeMPIs(w, pk.p, pk.q, pk.g, pk.y) + case PubKeyAlgoElGamal: + return writeMPIs(w, pk.p, pk.g, pk.y) + case PubKeyAlgoECDSA: + return pk.ec.serialize(w) + case PubKeyAlgoECDH: + if err = pk.ec.serialize(w); err != nil { + return + } + return pk.ecdh.serialize(w) + } + return errors.InvalidArgumentError("bad public-key algorithm") +} + +// CanSign returns true iff this public key can generate signatures +func (pk *PublicKey) CanSign() bool { + return pk.PubKeyAlgo != PubKeyAlgoRSAEncryptOnly && pk.PubKeyAlgo != PubKeyAlgoElGamal +} + +// VerifySignature returns nil iff sig is a valid signature, made by this +// public key, of the data hashed into signed. signed is mutated by this call. +func (pk *PublicKey) VerifySignature(signed hash.Hash, sig *Signature) (err error) { + if !pk.CanSign() { + return errors.InvalidArgumentError("public key cannot generate signatures") + } + + signed.Write(sig.HashSuffix) + hashBytes := signed.Sum(nil) + + if hashBytes[0] != sig.HashTag[0] || hashBytes[1] != sig.HashTag[1] { + return errors.SignatureError("hash tag doesn't match") + } + + if pk.PubKeyAlgo != sig.PubKeyAlgo { + return errors.InvalidArgumentError("public key and signature use different algorithms") + } + + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + rsaPublicKey, _ := pk.PublicKey.(*rsa.PublicKey) + err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, sig.RSASignature.bytes) + if err != nil { + return errors.SignatureError("RSA verification failure") + } + return nil + case PubKeyAlgoDSA: + dsaPublicKey, _ := pk.PublicKey.(*dsa.PublicKey) + // Need to truncate hashBytes to match FIPS 186-3 section 4.6. + subgroupSize := (dsaPublicKey.Q.BitLen() + 7) / 8 + if len(hashBytes) > subgroupSize { + hashBytes = hashBytes[:subgroupSize] + } + if !dsa.Verify(dsaPublicKey, hashBytes, new(big.Int).SetBytes(sig.DSASigR.bytes), new(big.Int).SetBytes(sig.DSASigS.bytes)) { + return errors.SignatureError("DSA verification failure") + } + return nil + case PubKeyAlgoECDSA: + ecdsaPublicKey := pk.PublicKey.(*ecdsa.PublicKey) + if !ecdsa.Verify(ecdsaPublicKey, hashBytes, new(big.Int).SetBytes(sig.ECDSASigR.bytes), new(big.Int).SetBytes(sig.ECDSASigS.bytes)) { + return errors.SignatureError("ECDSA verification failure") + } + return nil + default: + return errors.SignatureError("Unsupported public key algorithm used in signature") + } +} + +// VerifySignatureV3 returns nil iff sig is a valid signature, made by this +// public key, of the data hashed into signed. signed is mutated by this call. +func (pk *PublicKey) VerifySignatureV3(signed hash.Hash, sig *SignatureV3) (err error) { + if !pk.CanSign() { + return errors.InvalidArgumentError("public key cannot generate signatures") + } + + suffix := make([]byte, 5) + suffix[0] = byte(sig.SigType) + binary.BigEndian.PutUint32(suffix[1:], uint32(sig.CreationTime.Unix())) + signed.Write(suffix) + hashBytes := signed.Sum(nil) + + if hashBytes[0] != sig.HashTag[0] || hashBytes[1] != sig.HashTag[1] { + return errors.SignatureError("hash tag doesn't match") + } + + if pk.PubKeyAlgo != sig.PubKeyAlgo { + return errors.InvalidArgumentError("public key and signature use different algorithms") + } + + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + rsaPublicKey := pk.PublicKey.(*rsa.PublicKey) + if err = rsa.VerifyPKCS1v15(rsaPublicKey, sig.Hash, hashBytes, sig.RSASignature.bytes); err != nil { + return errors.SignatureError("RSA verification failure") + } + return + case PubKeyAlgoDSA: + dsaPublicKey := pk.PublicKey.(*dsa.PublicKey) + // Need to truncate hashBytes to match FIPS 186-3 section 4.6. + subgroupSize := (dsaPublicKey.Q.BitLen() + 7) / 8 + if len(hashBytes) > subgroupSize { + hashBytes = hashBytes[:subgroupSize] + } + if !dsa.Verify(dsaPublicKey, hashBytes, new(big.Int).SetBytes(sig.DSASigR.bytes), new(big.Int).SetBytes(sig.DSASigS.bytes)) { + return errors.SignatureError("DSA verification failure") + } + return nil + default: + panic("shouldn't happen") + } +} + +// keySignatureHash returns a Hash of the message that needs to be signed for +// pk to assert a subkey relationship to signed. +func keySignatureHash(pk, signed signingKey, hashFunc crypto.Hash) (h hash.Hash, err error) { + if !hashFunc.Available() { + return nil, errors.UnsupportedError("hash function") + } + h = hashFunc.New() + + // RFC 4880, section 5.2.4 + pk.SerializeSignaturePrefix(h) + pk.serializeWithoutHeaders(h) + signed.SerializeSignaturePrefix(h) + signed.serializeWithoutHeaders(h) + return +} + +// VerifyKeySignature returns nil iff sig is a valid signature, made by this +// public key, of signed. +func (pk *PublicKey) VerifyKeySignature(signed *PublicKey, sig *Signature) error { + h, err := keySignatureHash(pk, signed, sig.Hash) + if err != nil { + return err + } + if err = pk.VerifySignature(h, sig); err != nil { + return err + } + + if sig.FlagSign { + // Signing subkeys must be cross-signed. See + // https://www.gnupg.org/faq/subkey-cross-certify.html. + if sig.EmbeddedSignature == nil { + return errors.StructuralError("signing subkey is missing cross-signature") + } + // Verify the cross-signature. This is calculated over the same + // data as the main signature, so we cannot just recursively + // call signed.VerifyKeySignature(...) + if h, err = keySignatureHash(pk, signed, sig.EmbeddedSignature.Hash); err != nil { + return errors.StructuralError("error while hashing for cross-signature: " + err.Error()) + } + if err := signed.VerifySignature(h, sig.EmbeddedSignature); err != nil { + return errors.StructuralError("error while verifying cross-signature: " + err.Error()) + } + } + + return nil +} + +func keyRevocationHash(pk signingKey, hashFunc crypto.Hash) (h hash.Hash, err error) { + if !hashFunc.Available() { + return nil, errors.UnsupportedError("hash function") + } + h = hashFunc.New() + + // RFC 4880, section 5.2.4 + pk.SerializeSignaturePrefix(h) + pk.serializeWithoutHeaders(h) + + return +} + +// VerifyRevocationSignature returns nil iff sig is a valid signature, made by this +// public key. +func (pk *PublicKey) VerifyRevocationSignature(sig *Signature) (err error) { + h, err := keyRevocationHash(pk, sig.Hash) + if err != nil { + return err + } + return pk.VerifySignature(h, sig) +} + +// userIdSignatureHash returns a Hash of the message that needs to be signed +// to assert that pk is a valid key for id. +func userIdSignatureHash(id string, pk *PublicKey, hashFunc crypto.Hash) (h hash.Hash, err error) { + if !hashFunc.Available() { + return nil, errors.UnsupportedError("hash function") + } + h = hashFunc.New() + + // RFC 4880, section 5.2.4 + pk.SerializeSignaturePrefix(h) + pk.serializeWithoutHeaders(h) + + var buf [5]byte + buf[0] = 0xb4 + buf[1] = byte(len(id) >> 24) + buf[2] = byte(len(id) >> 16) + buf[3] = byte(len(id) >> 8) + buf[4] = byte(len(id)) + h.Write(buf[:]) + h.Write([]byte(id)) + + return +} + +// VerifyUserIdSignature returns nil iff sig is a valid signature, made by this +// public key, that id is the identity of pub. +func (pk *PublicKey) VerifyUserIdSignature(id string, pub *PublicKey, sig *Signature) (err error) { + h, err := userIdSignatureHash(id, pub, sig.Hash) + if err != nil { + return err + } + return pk.VerifySignature(h, sig) +} + +// VerifyUserIdSignatureV3 returns nil iff sig is a valid signature, made by this +// public key, that id is the identity of pub. +func (pk *PublicKey) VerifyUserIdSignatureV3(id string, pub *PublicKey, sig *SignatureV3) (err error) { + h, err := userIdSignatureV3Hash(id, pub, sig.Hash) + if err != nil { + return err + } + return pk.VerifySignatureV3(h, sig) +} + +// KeyIdString returns the public key's fingerprint in capital hex +// (e.g. "6C7EE1B8621CC013"). +func (pk *PublicKey) KeyIdString() string { + return fmt.Sprintf("%X", pk.Fingerprint[12:20]) +} + +// KeyIdShortString returns the short form of public key's fingerprint +// in capital hex, as shown by gpg --list-keys (e.g. "621CC013"). +func (pk *PublicKey) KeyIdShortString() string { + return fmt.Sprintf("%X", pk.Fingerprint[16:20]) +} + +// A parsedMPI is used to store the contents of a big integer, along with the +// bit length that was specified in the original input. This allows the MPI to +// be reserialized exactly. +type parsedMPI struct { + bytes []byte + bitLength uint16 +} + +// writeMPIs is a utility function for serializing several big integers to the +// given Writer. +func writeMPIs(w io.Writer, mpis ...parsedMPI) (err error) { + for _, mpi := range mpis { + err = writeMPI(w, mpi.bitLength, mpi.bytes) + if err != nil { + return + } + } + return +} + +// BitLength returns the bit length for the given public key. +func (pk *PublicKey) BitLength() (bitLength uint16, err error) { + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + bitLength = pk.n.bitLength + case PubKeyAlgoDSA: + bitLength = pk.p.bitLength + case PubKeyAlgoElGamal: + bitLength = pk.p.bitLength + default: + err = errors.InvalidArgumentError("bad public-key algorithm") + } + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key_v3.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key_v3.go new file mode 100644 index 00000000000..5daf7b6cfd4 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/public_key_v3.go @@ -0,0 +1,279 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "crypto" + "crypto/md5" + "crypto/rsa" + "encoding/binary" + "fmt" + "hash" + "io" + "math/big" + "strconv" + "time" + + "golang.org/x/crypto/openpgp/errors" +) + +// PublicKeyV3 represents older, version 3 public keys. These keys are less secure and +// should not be used for signing or encrypting. They are supported here only for +// parsing version 3 key material and validating signatures. +// See RFC 4880, section 5.5.2. +type PublicKeyV3 struct { + CreationTime time.Time + DaysToExpire uint16 + PubKeyAlgo PublicKeyAlgorithm + PublicKey *rsa.PublicKey + Fingerprint [16]byte + KeyId uint64 + IsSubkey bool + + n, e parsedMPI +} + +// newRSAPublicKeyV3 returns a PublicKey that wraps the given rsa.PublicKey. +// Included here for testing purposes only. RFC 4880, section 5.5.2: +// "an implementation MUST NOT generate a V3 key, but MAY accept it." +func newRSAPublicKeyV3(creationTime time.Time, pub *rsa.PublicKey) *PublicKeyV3 { + pk := &PublicKeyV3{ + CreationTime: creationTime, + PublicKey: pub, + n: fromBig(pub.N), + e: fromBig(big.NewInt(int64(pub.E))), + } + + pk.setFingerPrintAndKeyId() + return pk +} + +func (pk *PublicKeyV3) parse(r io.Reader) (err error) { + // RFC 4880, section 5.5.2 + var buf [8]byte + if _, err = readFull(r, buf[:]); err != nil { + return + } + if buf[0] < 2 || buf[0] > 3 { + return errors.UnsupportedError("public key version") + } + pk.CreationTime = time.Unix(int64(uint32(buf[1])<<24|uint32(buf[2])<<16|uint32(buf[3])<<8|uint32(buf[4])), 0) + pk.DaysToExpire = binary.BigEndian.Uint16(buf[5:7]) + pk.PubKeyAlgo = PublicKeyAlgorithm(buf[7]) + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + err = pk.parseRSA(r) + default: + err = errors.UnsupportedError("public key type: " + strconv.Itoa(int(pk.PubKeyAlgo))) + } + if err != nil { + return + } + + pk.setFingerPrintAndKeyId() + return +} + +func (pk *PublicKeyV3) setFingerPrintAndKeyId() { + // RFC 4880, section 12.2 + fingerPrint := md5.New() + fingerPrint.Write(pk.n.bytes) + fingerPrint.Write(pk.e.bytes) + fingerPrint.Sum(pk.Fingerprint[:0]) + pk.KeyId = binary.BigEndian.Uint64(pk.n.bytes[len(pk.n.bytes)-8:]) +} + +// parseRSA parses RSA public key material from the given Reader. See RFC 4880, +// section 5.5.2. +func (pk *PublicKeyV3) parseRSA(r io.Reader) (err error) { + if pk.n.bytes, pk.n.bitLength, err = readMPI(r); err != nil { + return + } + if pk.e.bytes, pk.e.bitLength, err = readMPI(r); err != nil { + return + } + + // RFC 4880 Section 12.2 requires the low 8 bytes of the + // modulus to form the key id. + if len(pk.n.bytes) < 8 { + return errors.StructuralError("v3 public key modulus is too short") + } + if len(pk.e.bytes) > 3 { + err = errors.UnsupportedError("large public exponent") + return + } + rsa := &rsa.PublicKey{N: new(big.Int).SetBytes(pk.n.bytes)} + for i := 0; i < len(pk.e.bytes); i++ { + rsa.E <<= 8 + rsa.E |= int(pk.e.bytes[i]) + } + pk.PublicKey = rsa + return +} + +// SerializeSignaturePrefix writes the prefix for this public key to the given Writer. +// The prefix is used when calculating a signature over this public key. See +// RFC 4880, section 5.2.4. +func (pk *PublicKeyV3) SerializeSignaturePrefix(w io.Writer) { + var pLength uint16 + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + pLength += 2 + uint16(len(pk.n.bytes)) + pLength += 2 + uint16(len(pk.e.bytes)) + default: + panic("unknown public key algorithm") + } + pLength += 6 + w.Write([]byte{0x99, byte(pLength >> 8), byte(pLength)}) + return +} + +func (pk *PublicKeyV3) Serialize(w io.Writer) (err error) { + length := 8 // 8 byte header + + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + length += 2 + len(pk.n.bytes) + length += 2 + len(pk.e.bytes) + default: + panic("unknown public key algorithm") + } + + packetType := packetTypePublicKey + if pk.IsSubkey { + packetType = packetTypePublicSubkey + } + if err = serializeHeader(w, packetType, length); err != nil { + return + } + return pk.serializeWithoutHeaders(w) +} + +// serializeWithoutHeaders marshals the PublicKey to w in the form of an +// OpenPGP public key packet, not including the packet header. +func (pk *PublicKeyV3) serializeWithoutHeaders(w io.Writer) (err error) { + var buf [8]byte + // Version 3 + buf[0] = 3 + // Creation time + t := uint32(pk.CreationTime.Unix()) + buf[1] = byte(t >> 24) + buf[2] = byte(t >> 16) + buf[3] = byte(t >> 8) + buf[4] = byte(t) + // Days to expire + buf[5] = byte(pk.DaysToExpire >> 8) + buf[6] = byte(pk.DaysToExpire) + // Public key algorithm + buf[7] = byte(pk.PubKeyAlgo) + + if _, err = w.Write(buf[:]); err != nil { + return + } + + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + return writeMPIs(w, pk.n, pk.e) + } + return errors.InvalidArgumentError("bad public-key algorithm") +} + +// CanSign returns true iff this public key can generate signatures +func (pk *PublicKeyV3) CanSign() bool { + return pk.PubKeyAlgo != PubKeyAlgoRSAEncryptOnly +} + +// VerifySignatureV3 returns nil iff sig is a valid signature, made by this +// public key, of the data hashed into signed. signed is mutated by this call. +func (pk *PublicKeyV3) VerifySignatureV3(signed hash.Hash, sig *SignatureV3) (err error) { + if !pk.CanSign() { + return errors.InvalidArgumentError("public key cannot generate signatures") + } + + suffix := make([]byte, 5) + suffix[0] = byte(sig.SigType) + binary.BigEndian.PutUint32(suffix[1:], uint32(sig.CreationTime.Unix())) + signed.Write(suffix) + hashBytes := signed.Sum(nil) + + if hashBytes[0] != sig.HashTag[0] || hashBytes[1] != sig.HashTag[1] { + return errors.SignatureError("hash tag doesn't match") + } + + if pk.PubKeyAlgo != sig.PubKeyAlgo { + return errors.InvalidArgumentError("public key and signature use different algorithms") + } + + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + if err = rsa.VerifyPKCS1v15(pk.PublicKey, sig.Hash, hashBytes, sig.RSASignature.bytes); err != nil { + return errors.SignatureError("RSA verification failure") + } + return + default: + // V3 public keys only support RSA. + panic("shouldn't happen") + } +} + +// VerifyUserIdSignatureV3 returns nil iff sig is a valid signature, made by this +// public key, that id is the identity of pub. +func (pk *PublicKeyV3) VerifyUserIdSignatureV3(id string, pub *PublicKeyV3, sig *SignatureV3) (err error) { + h, err := userIdSignatureV3Hash(id, pk, sig.Hash) + if err != nil { + return err + } + return pk.VerifySignatureV3(h, sig) +} + +// VerifyKeySignatureV3 returns nil iff sig is a valid signature, made by this +// public key, of signed. +func (pk *PublicKeyV3) VerifyKeySignatureV3(signed *PublicKeyV3, sig *SignatureV3) (err error) { + h, err := keySignatureHash(pk, signed, sig.Hash) + if err != nil { + return err + } + return pk.VerifySignatureV3(h, sig) +} + +// userIdSignatureV3Hash returns a Hash of the message that needs to be signed +// to assert that pk is a valid key for id. +func userIdSignatureV3Hash(id string, pk signingKey, hfn crypto.Hash) (h hash.Hash, err error) { + if !hfn.Available() { + return nil, errors.UnsupportedError("hash function") + } + h = hfn.New() + + // RFC 4880, section 5.2.4 + pk.SerializeSignaturePrefix(h) + pk.serializeWithoutHeaders(h) + + h.Write([]byte(id)) + + return +} + +// KeyIdString returns the public key's fingerprint in capital hex +// (e.g. "6C7EE1B8621CC013"). +func (pk *PublicKeyV3) KeyIdString() string { + return fmt.Sprintf("%X", pk.KeyId) +} + +// KeyIdShortString returns the short form of public key's fingerprint +// in capital hex, as shown by gpg --list-keys (e.g. "621CC013"). +func (pk *PublicKeyV3) KeyIdShortString() string { + return fmt.Sprintf("%X", pk.KeyId&0xFFFFFFFF) +} + +// BitLength returns the bit length for the given public key. +func (pk *PublicKeyV3) BitLength() (bitLength uint16, err error) { + switch pk.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly, PubKeyAlgoRSASignOnly: + bitLength = pk.n.bitLength + default: + err = errors.InvalidArgumentError("bad public-key algorithm") + } + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/reader.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/reader.go new file mode 100644 index 00000000000..34bc7c613e6 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/reader.go @@ -0,0 +1,76 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "golang.org/x/crypto/openpgp/errors" + "io" +) + +// Reader reads packets from an io.Reader and allows packets to be 'unread' so +// that they result from the next call to Next. +type Reader struct { + q []Packet + readers []io.Reader +} + +// New io.Readers are pushed when a compressed or encrypted packet is processed +// and recursively treated as a new source of packets. However, a carefully +// crafted packet can trigger an infinite recursive sequence of packets. See +// http://mumble.net/~campbell/misc/pgp-quine +// https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-4402 +// This constant limits the number of recursive packets that may be pushed. +const maxReaders = 32 + +// Next returns the most recently unread Packet, or reads another packet from +// the top-most io.Reader. Unknown packet types are skipped. +func (r *Reader) Next() (p Packet, err error) { + if len(r.q) > 0 { + p = r.q[len(r.q)-1] + r.q = r.q[:len(r.q)-1] + return + } + + for len(r.readers) > 0 { + p, err = Read(r.readers[len(r.readers)-1]) + if err == nil { + return + } + if err == io.EOF { + r.readers = r.readers[:len(r.readers)-1] + continue + } + if _, ok := err.(errors.UnknownPacketTypeError); !ok { + return nil, err + } + } + + return nil, io.EOF +} + +// Push causes the Reader to start reading from a new io.Reader. When an EOF +// error is seen from the new io.Reader, it is popped and the Reader continues +// to read from the next most recent io.Reader. Push returns a StructuralError +// if pushing the reader would exceed the maximum recursion level, otherwise it +// returns nil. +func (r *Reader) Push(reader io.Reader) (err error) { + if len(r.readers) >= maxReaders { + return errors.StructuralError("too many layers of packets") + } + r.readers = append(r.readers, reader) + return nil +} + +// Unread causes the given Packet to be returned from the next call to Next. +func (r *Reader) Unread(p Packet) { + r.q = append(r.q, p) +} + +func NewReader(r io.Reader) *Reader { + return &Reader{ + q: nil, + readers: []io.Reader{r}, + } +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature.go new file mode 100644 index 00000000000..6ce0cbedbea --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature.go @@ -0,0 +1,731 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "bytes" + "crypto" + "crypto/dsa" + "crypto/ecdsa" + "encoding/asn1" + "encoding/binary" + "hash" + "io" + "math/big" + "strconv" + "time" + + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/s2k" +) + +const ( + // See RFC 4880, section 5.2.3.21 for details. + KeyFlagCertify = 1 << iota + KeyFlagSign + KeyFlagEncryptCommunications + KeyFlagEncryptStorage +) + +// Signature represents a signature. See RFC 4880, section 5.2. +type Signature struct { + SigType SignatureType + PubKeyAlgo PublicKeyAlgorithm + Hash crypto.Hash + + // HashSuffix is extra data that is hashed in after the signed data. + HashSuffix []byte + // HashTag contains the first two bytes of the hash for fast rejection + // of bad signed data. + HashTag [2]byte + CreationTime time.Time + + RSASignature parsedMPI + DSASigR, DSASigS parsedMPI + ECDSASigR, ECDSASigS parsedMPI + + // rawSubpackets contains the unparsed subpackets, in order. + rawSubpackets []outputSubpacket + + // The following are optional so are nil when not included in the + // signature. + + SigLifetimeSecs, KeyLifetimeSecs *uint32 + PreferredSymmetric, PreferredHash, PreferredCompression []uint8 + IssuerKeyId *uint64 + IsPrimaryId *bool + + // FlagsValid is set if any flags were given. See RFC 4880, section + // 5.2.3.21 for details. + FlagsValid bool + FlagCertify, FlagSign, FlagEncryptCommunications, FlagEncryptStorage bool + + // RevocationReason is set if this signature has been revoked. + // See RFC 4880, section 5.2.3.23 for details. + RevocationReason *uint8 + RevocationReasonText string + + // MDC is set if this signature has a feature packet that indicates + // support for MDC subpackets. + MDC bool + + // EmbeddedSignature, if non-nil, is a signature of the parent key, by + // this key. This prevents an attacker from claiming another's signing + // subkey as their own. + EmbeddedSignature *Signature + + outSubpackets []outputSubpacket +} + +func (sig *Signature) parse(r io.Reader) (err error) { + // RFC 4880, section 5.2.3 + var buf [5]byte + _, err = readFull(r, buf[:1]) + if err != nil { + return + } + if buf[0] != 4 { + err = errors.UnsupportedError("signature packet version " + strconv.Itoa(int(buf[0]))) + return + } + + _, err = readFull(r, buf[:5]) + if err != nil { + return + } + sig.SigType = SignatureType(buf[0]) + sig.PubKeyAlgo = PublicKeyAlgorithm(buf[1]) + switch sig.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA, PubKeyAlgoECDSA: + default: + err = errors.UnsupportedError("public key algorithm " + strconv.Itoa(int(sig.PubKeyAlgo))) + return + } + + var ok bool + sig.Hash, ok = s2k.HashIdToHash(buf[2]) + if !ok { + return errors.UnsupportedError("hash function " + strconv.Itoa(int(buf[2]))) + } + + hashedSubpacketsLength := int(buf[3])<<8 | int(buf[4]) + l := 6 + hashedSubpacketsLength + sig.HashSuffix = make([]byte, l+6) + sig.HashSuffix[0] = 4 + copy(sig.HashSuffix[1:], buf[:5]) + hashedSubpackets := sig.HashSuffix[6:l] + _, err = readFull(r, hashedSubpackets) + if err != nil { + return + } + // See RFC 4880, section 5.2.4 + trailer := sig.HashSuffix[l:] + trailer[0] = 4 + trailer[1] = 0xff + trailer[2] = uint8(l >> 24) + trailer[3] = uint8(l >> 16) + trailer[4] = uint8(l >> 8) + trailer[5] = uint8(l) + + err = parseSignatureSubpackets(sig, hashedSubpackets, true) + if err != nil { + return + } + + _, err = readFull(r, buf[:2]) + if err != nil { + return + } + unhashedSubpacketsLength := int(buf[0])<<8 | int(buf[1]) + unhashedSubpackets := make([]byte, unhashedSubpacketsLength) + _, err = readFull(r, unhashedSubpackets) + if err != nil { + return + } + err = parseSignatureSubpackets(sig, unhashedSubpackets, false) + if err != nil { + return + } + + _, err = readFull(r, sig.HashTag[:2]) + if err != nil { + return + } + + switch sig.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + sig.RSASignature.bytes, sig.RSASignature.bitLength, err = readMPI(r) + case PubKeyAlgoDSA: + sig.DSASigR.bytes, sig.DSASigR.bitLength, err = readMPI(r) + if err == nil { + sig.DSASigS.bytes, sig.DSASigS.bitLength, err = readMPI(r) + } + case PubKeyAlgoECDSA: + sig.ECDSASigR.bytes, sig.ECDSASigR.bitLength, err = readMPI(r) + if err == nil { + sig.ECDSASigS.bytes, sig.ECDSASigS.bitLength, err = readMPI(r) + } + default: + panic("unreachable") + } + return +} + +// parseSignatureSubpackets parses subpackets of the main signature packet. See +// RFC 4880, section 5.2.3.1. +func parseSignatureSubpackets(sig *Signature, subpackets []byte, isHashed bool) (err error) { + for len(subpackets) > 0 { + subpackets, err = parseSignatureSubpacket(sig, subpackets, isHashed) + if err != nil { + return + } + } + + if sig.CreationTime.IsZero() { + err = errors.StructuralError("no creation time in signature") + } + + return +} + +type signatureSubpacketType uint8 + +const ( + creationTimeSubpacket signatureSubpacketType = 2 + signatureExpirationSubpacket signatureSubpacketType = 3 + keyExpirationSubpacket signatureSubpacketType = 9 + prefSymmetricAlgosSubpacket signatureSubpacketType = 11 + issuerSubpacket signatureSubpacketType = 16 + prefHashAlgosSubpacket signatureSubpacketType = 21 + prefCompressionSubpacket signatureSubpacketType = 22 + primaryUserIdSubpacket signatureSubpacketType = 25 + keyFlagsSubpacket signatureSubpacketType = 27 + reasonForRevocationSubpacket signatureSubpacketType = 29 + featuresSubpacket signatureSubpacketType = 30 + embeddedSignatureSubpacket signatureSubpacketType = 32 +) + +// parseSignatureSubpacket parses a single subpacket. len(subpacket) is >= 1. +func parseSignatureSubpacket(sig *Signature, subpacket []byte, isHashed bool) (rest []byte, err error) { + // RFC 4880, section 5.2.3.1 + var ( + length uint32 + packetType signatureSubpacketType + isCritical bool + ) + switch { + case subpacket[0] < 192: + length = uint32(subpacket[0]) + subpacket = subpacket[1:] + case subpacket[0] < 255: + if len(subpacket) < 2 { + goto Truncated + } + length = uint32(subpacket[0]-192)<<8 + uint32(subpacket[1]) + 192 + subpacket = subpacket[2:] + default: + if len(subpacket) < 5 { + goto Truncated + } + length = uint32(subpacket[1])<<24 | + uint32(subpacket[2])<<16 | + uint32(subpacket[3])<<8 | + uint32(subpacket[4]) + subpacket = subpacket[5:] + } + if length > uint32(len(subpacket)) { + goto Truncated + } + rest = subpacket[length:] + subpacket = subpacket[:length] + if len(subpacket) == 0 { + err = errors.StructuralError("zero length signature subpacket") + return + } + packetType = signatureSubpacketType(subpacket[0] & 0x7f) + isCritical = subpacket[0]&0x80 == 0x80 + subpacket = subpacket[1:] + sig.rawSubpackets = append(sig.rawSubpackets, outputSubpacket{isHashed, packetType, isCritical, subpacket}) + switch packetType { + case creationTimeSubpacket: + if !isHashed { + err = errors.StructuralError("signature creation time in non-hashed area") + return + } + if len(subpacket) != 4 { + err = errors.StructuralError("signature creation time not four bytes") + return + } + t := binary.BigEndian.Uint32(subpacket) + sig.CreationTime = time.Unix(int64(t), 0) + case signatureExpirationSubpacket: + // Signature expiration time, section 5.2.3.10 + if !isHashed { + return + } + if len(subpacket) != 4 { + err = errors.StructuralError("expiration subpacket with bad length") + return + } + sig.SigLifetimeSecs = new(uint32) + *sig.SigLifetimeSecs = binary.BigEndian.Uint32(subpacket) + case keyExpirationSubpacket: + // Key expiration time, section 5.2.3.6 + if !isHashed { + return + } + if len(subpacket) != 4 { + err = errors.StructuralError("key expiration subpacket with bad length") + return + } + sig.KeyLifetimeSecs = new(uint32) + *sig.KeyLifetimeSecs = binary.BigEndian.Uint32(subpacket) + case prefSymmetricAlgosSubpacket: + // Preferred symmetric algorithms, section 5.2.3.7 + if !isHashed { + return + } + sig.PreferredSymmetric = make([]byte, len(subpacket)) + copy(sig.PreferredSymmetric, subpacket) + case issuerSubpacket: + // Issuer, section 5.2.3.5 + if len(subpacket) != 8 { + err = errors.StructuralError("issuer subpacket with bad length") + return + } + sig.IssuerKeyId = new(uint64) + *sig.IssuerKeyId = binary.BigEndian.Uint64(subpacket) + case prefHashAlgosSubpacket: + // Preferred hash algorithms, section 5.2.3.8 + if !isHashed { + return + } + sig.PreferredHash = make([]byte, len(subpacket)) + copy(sig.PreferredHash, subpacket) + case prefCompressionSubpacket: + // Preferred compression algorithms, section 5.2.3.9 + if !isHashed { + return + } + sig.PreferredCompression = make([]byte, len(subpacket)) + copy(sig.PreferredCompression, subpacket) + case primaryUserIdSubpacket: + // Primary User ID, section 5.2.3.19 + if !isHashed { + return + } + if len(subpacket) != 1 { + err = errors.StructuralError("primary user id subpacket with bad length") + return + } + sig.IsPrimaryId = new(bool) + if subpacket[0] > 0 { + *sig.IsPrimaryId = true + } + case keyFlagsSubpacket: + // Key flags, section 5.2.3.21 + if !isHashed { + return + } + if len(subpacket) == 0 { + err = errors.StructuralError("empty key flags subpacket") + return + } + sig.FlagsValid = true + if subpacket[0]&KeyFlagCertify != 0 { + sig.FlagCertify = true + } + if subpacket[0]&KeyFlagSign != 0 { + sig.FlagSign = true + } + if subpacket[0]&KeyFlagEncryptCommunications != 0 { + sig.FlagEncryptCommunications = true + } + if subpacket[0]&KeyFlagEncryptStorage != 0 { + sig.FlagEncryptStorage = true + } + case reasonForRevocationSubpacket: + // Reason For Revocation, section 5.2.3.23 + if !isHashed { + return + } + if len(subpacket) == 0 { + err = errors.StructuralError("empty revocation reason subpacket") + return + } + sig.RevocationReason = new(uint8) + *sig.RevocationReason = subpacket[0] + sig.RevocationReasonText = string(subpacket[1:]) + case featuresSubpacket: + // Features subpacket, section 5.2.3.24 specifies a very general + // mechanism for OpenPGP implementations to signal support for new + // features. In practice, the subpacket is used exclusively to + // indicate support for MDC-protected encryption. + sig.MDC = len(subpacket) >= 1 && subpacket[0]&1 == 1 + case embeddedSignatureSubpacket: + // Only usage is in signatures that cross-certify + // signing subkeys. section 5.2.3.26 describes the + // format, with its usage described in section 11.1 + if sig.EmbeddedSignature != nil { + err = errors.StructuralError("Cannot have multiple embedded signatures") + return + } + sig.EmbeddedSignature = new(Signature) + // Embedded signatures are required to be v4 signatures see + // section 12.1. However, we only parse v4 signatures in this + // file anyway. + if err := sig.EmbeddedSignature.parse(bytes.NewBuffer(subpacket)); err != nil { + return nil, err + } + if sigType := sig.EmbeddedSignature.SigType; sigType != SigTypePrimaryKeyBinding { + return nil, errors.StructuralError("cross-signature has unexpected type " + strconv.Itoa(int(sigType))) + } + default: + if isCritical { + err = errors.UnsupportedError("unknown critical signature subpacket type " + strconv.Itoa(int(packetType))) + return + } + } + return + +Truncated: + err = errors.StructuralError("signature subpacket truncated") + return +} + +// subpacketLengthLength returns the length, in bytes, of an encoded length value. +func subpacketLengthLength(length int) int { + if length < 192 { + return 1 + } + if length < 16320 { + return 2 + } + return 5 +} + +// serializeSubpacketLength marshals the given length into to. +func serializeSubpacketLength(to []byte, length int) int { + // RFC 4880, Section 4.2.2. + if length < 192 { + to[0] = byte(length) + return 1 + } + if length < 16320 { + length -= 192 + to[0] = byte((length >> 8) + 192) + to[1] = byte(length) + return 2 + } + to[0] = 255 + to[1] = byte(length >> 24) + to[2] = byte(length >> 16) + to[3] = byte(length >> 8) + to[4] = byte(length) + return 5 +} + +// subpacketsLength returns the serialized length, in bytes, of the given +// subpackets. +func subpacketsLength(subpackets []outputSubpacket, hashed bool) (length int) { + for _, subpacket := range subpackets { + if subpacket.hashed == hashed { + length += subpacketLengthLength(len(subpacket.contents) + 1) + length += 1 // type byte + length += len(subpacket.contents) + } + } + return +} + +// serializeSubpackets marshals the given subpackets into to. +func serializeSubpackets(to []byte, subpackets []outputSubpacket, hashed bool) { + for _, subpacket := range subpackets { + if subpacket.hashed == hashed { + n := serializeSubpacketLength(to, len(subpacket.contents)+1) + to[n] = byte(subpacket.subpacketType) + to = to[1+n:] + n = copy(to, subpacket.contents) + to = to[n:] + } + } + return +} + +// KeyExpired returns whether sig is a self-signature of a key that has +// expired. +func (sig *Signature) KeyExpired(currentTime time.Time) bool { + if sig.KeyLifetimeSecs == nil { + return false + } + expiry := sig.CreationTime.Add(time.Duration(*sig.KeyLifetimeSecs) * time.Second) + return currentTime.After(expiry) +} + +// buildHashSuffix constructs the HashSuffix member of sig in preparation for signing. +func (sig *Signature) buildHashSuffix() (err error) { + hashedSubpacketsLen := subpacketsLength(sig.outSubpackets, true) + + var ok bool + l := 6 + hashedSubpacketsLen + sig.HashSuffix = make([]byte, l+6) + sig.HashSuffix[0] = 4 + sig.HashSuffix[1] = uint8(sig.SigType) + sig.HashSuffix[2] = uint8(sig.PubKeyAlgo) + sig.HashSuffix[3], ok = s2k.HashToHashId(sig.Hash) + if !ok { + sig.HashSuffix = nil + return errors.InvalidArgumentError("hash cannot be represented in OpenPGP: " + strconv.Itoa(int(sig.Hash))) + } + sig.HashSuffix[4] = byte(hashedSubpacketsLen >> 8) + sig.HashSuffix[5] = byte(hashedSubpacketsLen) + serializeSubpackets(sig.HashSuffix[6:l], sig.outSubpackets, true) + trailer := sig.HashSuffix[l:] + trailer[0] = 4 + trailer[1] = 0xff + trailer[2] = byte(l >> 24) + trailer[3] = byte(l >> 16) + trailer[4] = byte(l >> 8) + trailer[5] = byte(l) + return +} + +func (sig *Signature) signPrepareHash(h hash.Hash) (digest []byte, err error) { + err = sig.buildHashSuffix() + if err != nil { + return + } + + h.Write(sig.HashSuffix) + digest = h.Sum(nil) + copy(sig.HashTag[:], digest) + return +} + +// Sign signs a message with a private key. The hash, h, must contain +// the hash of the message to be signed and will be mutated by this function. +// On success, the signature is stored in sig. Call Serialize to write it out. +// If config is nil, sensible defaults will be used. +func (sig *Signature) Sign(h hash.Hash, priv *PrivateKey, config *Config) (err error) { + sig.outSubpackets = sig.buildSubpackets() + digest, err := sig.signPrepareHash(h) + if err != nil { + return + } + + switch priv.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + // supports both *rsa.PrivateKey and crypto.Signer + sig.RSASignature.bytes, err = priv.PrivateKey.(crypto.Signer).Sign(config.Random(), digest, sig.Hash) + sig.RSASignature.bitLength = uint16(8 * len(sig.RSASignature.bytes)) + case PubKeyAlgoDSA: + dsaPriv := priv.PrivateKey.(*dsa.PrivateKey) + + // Need to truncate hashBytes to match FIPS 186-3 section 4.6. + subgroupSize := (dsaPriv.Q.BitLen() + 7) / 8 + if len(digest) > subgroupSize { + digest = digest[:subgroupSize] + } + r, s, err := dsa.Sign(config.Random(), dsaPriv, digest) + if err == nil { + sig.DSASigR.bytes = r.Bytes() + sig.DSASigR.bitLength = uint16(8 * len(sig.DSASigR.bytes)) + sig.DSASigS.bytes = s.Bytes() + sig.DSASigS.bitLength = uint16(8 * len(sig.DSASigS.bytes)) + } + case PubKeyAlgoECDSA: + var r, s *big.Int + if pk, ok := priv.PrivateKey.(*ecdsa.PrivateKey); ok { + // direct support, avoid asn1 wrapping/unwrapping + r, s, err = ecdsa.Sign(config.Random(), pk, digest) + } else { + var b []byte + b, err = priv.PrivateKey.(crypto.Signer).Sign(config.Random(), digest, nil) + if err == nil { + r, s, err = unwrapECDSASig(b) + } + } + if err == nil { + sig.ECDSASigR = fromBig(r) + sig.ECDSASigS = fromBig(s) + } + default: + err = errors.UnsupportedError("public key algorithm: " + strconv.Itoa(int(sig.PubKeyAlgo))) + } + + return +} + +// unwrapECDSASig parses the two integer components of an ASN.1-encoded ECDSA +// signature. +func unwrapECDSASig(b []byte) (r, s *big.Int, err error) { + var ecsdaSig struct { + R, S *big.Int + } + _, err = asn1.Unmarshal(b, &ecsdaSig) + if err != nil { + return + } + return ecsdaSig.R, ecsdaSig.S, nil +} + +// SignUserId computes a signature from priv, asserting that pub is a valid +// key for the identity id. On success, the signature is stored in sig. Call +// Serialize to write it out. +// If config is nil, sensible defaults will be used. +func (sig *Signature) SignUserId(id string, pub *PublicKey, priv *PrivateKey, config *Config) error { + h, err := userIdSignatureHash(id, pub, sig.Hash) + if err != nil { + return err + } + return sig.Sign(h, priv, config) +} + +// SignKey computes a signature from priv, asserting that pub is a subkey. On +// success, the signature is stored in sig. Call Serialize to write it out. +// If config is nil, sensible defaults will be used. +func (sig *Signature) SignKey(pub *PublicKey, priv *PrivateKey, config *Config) error { + h, err := keySignatureHash(&priv.PublicKey, pub, sig.Hash) + if err != nil { + return err + } + return sig.Sign(h, priv, config) +} + +// Serialize marshals sig to w. Sign, SignUserId or SignKey must have been +// called first. +func (sig *Signature) Serialize(w io.Writer) (err error) { + if len(sig.outSubpackets) == 0 { + sig.outSubpackets = sig.rawSubpackets + } + if sig.RSASignature.bytes == nil && sig.DSASigR.bytes == nil && sig.ECDSASigR.bytes == nil { + return errors.InvalidArgumentError("Signature: need to call Sign, SignUserId or SignKey before Serialize") + } + + sigLength := 0 + switch sig.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + sigLength = 2 + len(sig.RSASignature.bytes) + case PubKeyAlgoDSA: + sigLength = 2 + len(sig.DSASigR.bytes) + sigLength += 2 + len(sig.DSASigS.bytes) + case PubKeyAlgoECDSA: + sigLength = 2 + len(sig.ECDSASigR.bytes) + sigLength += 2 + len(sig.ECDSASigS.bytes) + default: + panic("impossible") + } + + unhashedSubpacketsLen := subpacketsLength(sig.outSubpackets, false) + length := len(sig.HashSuffix) - 6 /* trailer not included */ + + 2 /* length of unhashed subpackets */ + unhashedSubpacketsLen + + 2 /* hash tag */ + sigLength + err = serializeHeader(w, packetTypeSignature, length) + if err != nil { + return + } + + _, err = w.Write(sig.HashSuffix[:len(sig.HashSuffix)-6]) + if err != nil { + return + } + + unhashedSubpackets := make([]byte, 2+unhashedSubpacketsLen) + unhashedSubpackets[0] = byte(unhashedSubpacketsLen >> 8) + unhashedSubpackets[1] = byte(unhashedSubpacketsLen) + serializeSubpackets(unhashedSubpackets[2:], sig.outSubpackets, false) + + _, err = w.Write(unhashedSubpackets) + if err != nil { + return + } + _, err = w.Write(sig.HashTag[:]) + if err != nil { + return + } + + switch sig.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + err = writeMPIs(w, sig.RSASignature) + case PubKeyAlgoDSA: + err = writeMPIs(w, sig.DSASigR, sig.DSASigS) + case PubKeyAlgoECDSA: + err = writeMPIs(w, sig.ECDSASigR, sig.ECDSASigS) + default: + panic("impossible") + } + return +} + +// outputSubpacket represents a subpacket to be marshaled. +type outputSubpacket struct { + hashed bool // true if this subpacket is in the hashed area. + subpacketType signatureSubpacketType + isCritical bool + contents []byte +} + +func (sig *Signature) buildSubpackets() (subpackets []outputSubpacket) { + creationTime := make([]byte, 4) + binary.BigEndian.PutUint32(creationTime, uint32(sig.CreationTime.Unix())) + subpackets = append(subpackets, outputSubpacket{true, creationTimeSubpacket, false, creationTime}) + + if sig.IssuerKeyId != nil { + keyId := make([]byte, 8) + binary.BigEndian.PutUint64(keyId, *sig.IssuerKeyId) + subpackets = append(subpackets, outputSubpacket{true, issuerSubpacket, false, keyId}) + } + + if sig.SigLifetimeSecs != nil && *sig.SigLifetimeSecs != 0 { + sigLifetime := make([]byte, 4) + binary.BigEndian.PutUint32(sigLifetime, *sig.SigLifetimeSecs) + subpackets = append(subpackets, outputSubpacket{true, signatureExpirationSubpacket, true, sigLifetime}) + } + + // Key flags may only appear in self-signatures or certification signatures. + + if sig.FlagsValid { + var flags byte + if sig.FlagCertify { + flags |= KeyFlagCertify + } + if sig.FlagSign { + flags |= KeyFlagSign + } + if sig.FlagEncryptCommunications { + flags |= KeyFlagEncryptCommunications + } + if sig.FlagEncryptStorage { + flags |= KeyFlagEncryptStorage + } + subpackets = append(subpackets, outputSubpacket{true, keyFlagsSubpacket, false, []byte{flags}}) + } + + // The following subpackets may only appear in self-signatures + + if sig.KeyLifetimeSecs != nil && *sig.KeyLifetimeSecs != 0 { + keyLifetime := make([]byte, 4) + binary.BigEndian.PutUint32(keyLifetime, *sig.KeyLifetimeSecs) + subpackets = append(subpackets, outputSubpacket{true, keyExpirationSubpacket, true, keyLifetime}) + } + + if sig.IsPrimaryId != nil && *sig.IsPrimaryId { + subpackets = append(subpackets, outputSubpacket{true, primaryUserIdSubpacket, false, []byte{1}}) + } + + if len(sig.PreferredSymmetric) > 0 { + subpackets = append(subpackets, outputSubpacket{true, prefSymmetricAlgosSubpacket, false, sig.PreferredSymmetric}) + } + + if len(sig.PreferredHash) > 0 { + subpackets = append(subpackets, outputSubpacket{true, prefHashAlgosSubpacket, false, sig.PreferredHash}) + } + + if len(sig.PreferredCompression) > 0 { + subpackets = append(subpackets, outputSubpacket{true, prefCompressionSubpacket, false, sig.PreferredCompression}) + } + + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature_v3.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature_v3.go new file mode 100644 index 00000000000..6edff889349 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/signature_v3.go @@ -0,0 +1,146 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "crypto" + "encoding/binary" + "fmt" + "io" + "strconv" + "time" + + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/s2k" +) + +// SignatureV3 represents older version 3 signatures. These signatures are less secure +// than version 4 and should not be used to create new signatures. They are included +// here for backwards compatibility to read and validate with older key material. +// See RFC 4880, section 5.2.2. +type SignatureV3 struct { + SigType SignatureType + CreationTime time.Time + IssuerKeyId uint64 + PubKeyAlgo PublicKeyAlgorithm + Hash crypto.Hash + HashTag [2]byte + + RSASignature parsedMPI + DSASigR, DSASigS parsedMPI +} + +func (sig *SignatureV3) parse(r io.Reader) (err error) { + // RFC 4880, section 5.2.2 + var buf [8]byte + if _, err = readFull(r, buf[:1]); err != nil { + return + } + if buf[0] < 2 || buf[0] > 3 { + err = errors.UnsupportedError("signature packet version " + strconv.Itoa(int(buf[0]))) + return + } + if _, err = readFull(r, buf[:1]); err != nil { + return + } + if buf[0] != 5 { + err = errors.UnsupportedError( + "invalid hashed material length " + strconv.Itoa(int(buf[0]))) + return + } + + // Read hashed material: signature type + creation time + if _, err = readFull(r, buf[:5]); err != nil { + return + } + sig.SigType = SignatureType(buf[0]) + t := binary.BigEndian.Uint32(buf[1:5]) + sig.CreationTime = time.Unix(int64(t), 0) + + // Eight-octet Key ID of signer. + if _, err = readFull(r, buf[:8]); err != nil { + return + } + sig.IssuerKeyId = binary.BigEndian.Uint64(buf[:]) + + // Public-key and hash algorithm + if _, err = readFull(r, buf[:2]); err != nil { + return + } + sig.PubKeyAlgo = PublicKeyAlgorithm(buf[0]) + switch sig.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly, PubKeyAlgoDSA: + default: + err = errors.UnsupportedError("public key algorithm " + strconv.Itoa(int(sig.PubKeyAlgo))) + return + } + var ok bool + if sig.Hash, ok = s2k.HashIdToHash(buf[1]); !ok { + return errors.UnsupportedError("hash function " + strconv.Itoa(int(buf[2]))) + } + + // Two-octet field holding left 16 bits of signed hash value. + if _, err = readFull(r, sig.HashTag[:2]); err != nil { + return + } + + switch sig.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + sig.RSASignature.bytes, sig.RSASignature.bitLength, err = readMPI(r) + case PubKeyAlgoDSA: + if sig.DSASigR.bytes, sig.DSASigR.bitLength, err = readMPI(r); err != nil { + return + } + sig.DSASigS.bytes, sig.DSASigS.bitLength, err = readMPI(r) + default: + panic("unreachable") + } + return +} + +// Serialize marshals sig to w. Sign, SignUserId or SignKey must have been +// called first. +func (sig *SignatureV3) Serialize(w io.Writer) (err error) { + buf := make([]byte, 8) + + // Write the sig type and creation time + buf[0] = byte(sig.SigType) + binary.BigEndian.PutUint32(buf[1:5], uint32(sig.CreationTime.Unix())) + if _, err = w.Write(buf[:5]); err != nil { + return + } + + // Write the issuer long key ID + binary.BigEndian.PutUint64(buf[:8], sig.IssuerKeyId) + if _, err = w.Write(buf[:8]); err != nil { + return + } + + // Write public key algorithm, hash ID, and hash value + buf[0] = byte(sig.PubKeyAlgo) + hashId, ok := s2k.HashToHashId(sig.Hash) + if !ok { + return errors.UnsupportedError(fmt.Sprintf("hash function %v", sig.Hash)) + } + buf[1] = hashId + copy(buf[2:4], sig.HashTag[:]) + if _, err = w.Write(buf[:4]); err != nil { + return + } + + if sig.RSASignature.bytes == nil && sig.DSASigR.bytes == nil { + return errors.InvalidArgumentError("Signature: need to call Sign, SignUserId or SignKey before Serialize") + } + + switch sig.PubKeyAlgo { + case PubKeyAlgoRSA, PubKeyAlgoRSASignOnly: + err = writeMPIs(w, sig.RSASignature) + case PubKeyAlgoDSA: + err = writeMPIs(w, sig.DSASigR, sig.DSASigS) + default: + panic("impossible") + } + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetric_key_encrypted.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetric_key_encrypted.go new file mode 100644 index 00000000000..4b1105b6f6b --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetric_key_encrypted.go @@ -0,0 +1,155 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "bytes" + "crypto/cipher" + "io" + "strconv" + + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/s2k" +) + +// This is the largest session key that we'll support. Since no 512-bit cipher +// has even been seriously used, this is comfortably large. +const maxSessionKeySizeInBytes = 64 + +// SymmetricKeyEncrypted represents a passphrase protected session key. See RFC +// 4880, section 5.3. +type SymmetricKeyEncrypted struct { + CipherFunc CipherFunction + s2k func(out, in []byte) + encryptedKey []byte +} + +const symmetricKeyEncryptedVersion = 4 + +func (ske *SymmetricKeyEncrypted) parse(r io.Reader) error { + // RFC 4880, section 5.3. + var buf [2]byte + if _, err := readFull(r, buf[:]); err != nil { + return err + } + if buf[0] != symmetricKeyEncryptedVersion { + return errors.UnsupportedError("SymmetricKeyEncrypted version") + } + ske.CipherFunc = CipherFunction(buf[1]) + + if ske.CipherFunc.KeySize() == 0 { + return errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(buf[1]))) + } + + var err error + ske.s2k, err = s2k.Parse(r) + if err != nil { + return err + } + + encryptedKey := make([]byte, maxSessionKeySizeInBytes) + // The session key may follow. We just have to try and read to find + // out. If it exists then we limit it to maxSessionKeySizeInBytes. + n, err := readFull(r, encryptedKey) + if err != nil && err != io.ErrUnexpectedEOF { + return err + } + + if n != 0 { + if n == maxSessionKeySizeInBytes { + return errors.UnsupportedError("oversized encrypted session key") + } + ske.encryptedKey = encryptedKey[:n] + } + + return nil +} + +// Decrypt attempts to decrypt an encrypted session key and returns the key and +// the cipher to use when decrypting a subsequent Symmetrically Encrypted Data +// packet. +func (ske *SymmetricKeyEncrypted) Decrypt(passphrase []byte) ([]byte, CipherFunction, error) { + key := make([]byte, ske.CipherFunc.KeySize()) + ske.s2k(key, passphrase) + + if len(ske.encryptedKey) == 0 { + return key, ske.CipherFunc, nil + } + + // the IV is all zeros + iv := make([]byte, ske.CipherFunc.blockSize()) + c := cipher.NewCFBDecrypter(ske.CipherFunc.new(key), iv) + plaintextKey := make([]byte, len(ske.encryptedKey)) + c.XORKeyStream(plaintextKey, ske.encryptedKey) + cipherFunc := CipherFunction(plaintextKey[0]) + if cipherFunc.blockSize() == 0 { + return nil, ske.CipherFunc, errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(cipherFunc))) + } + plaintextKey = plaintextKey[1:] + if l := len(plaintextKey); l == 0 || l%cipherFunc.blockSize() != 0 { + return nil, cipherFunc, errors.StructuralError("length of decrypted key not a multiple of block size") + } + + return plaintextKey, cipherFunc, nil +} + +// SerializeSymmetricKeyEncrypted serializes a symmetric key packet to w. The +// packet contains a random session key, encrypted by a key derived from the +// given passphrase. The session key is returned and must be passed to +// SerializeSymmetricallyEncrypted. +// If config is nil, sensible defaults will be used. +func SerializeSymmetricKeyEncrypted(w io.Writer, passphrase []byte, config *Config) (key []byte, err error) { + cipherFunc := config.Cipher() + keySize := cipherFunc.KeySize() + if keySize == 0 { + return nil, errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(cipherFunc))) + } + + s2kBuf := new(bytes.Buffer) + keyEncryptingKey := make([]byte, keySize) + // s2k.Serialize salts and stretches the passphrase, and writes the + // resulting key to keyEncryptingKey and the s2k descriptor to s2kBuf. + err = s2k.Serialize(s2kBuf, keyEncryptingKey, config.Random(), passphrase, &s2k.Config{Hash: config.Hash(), S2KCount: config.PasswordHashIterations()}) + if err != nil { + return + } + s2kBytes := s2kBuf.Bytes() + + packetLength := 2 /* header */ + len(s2kBytes) + 1 /* cipher type */ + keySize + err = serializeHeader(w, packetTypeSymmetricKeyEncrypted, packetLength) + if err != nil { + return + } + + var buf [2]byte + buf[0] = symmetricKeyEncryptedVersion + buf[1] = byte(cipherFunc) + _, err = w.Write(buf[:]) + if err != nil { + return + } + _, err = w.Write(s2kBytes) + if err != nil { + return + } + + sessionKey := make([]byte, keySize) + _, err = io.ReadFull(config.Random(), sessionKey) + if err != nil { + return + } + iv := make([]byte, cipherFunc.blockSize()) + c := cipher.NewCFBEncrypter(cipherFunc.new(keyEncryptingKey), iv) + encryptedCipherAndKey := make([]byte, keySize+1) + c.XORKeyStream(encryptedCipherAndKey, buf[1:]) + c.XORKeyStream(encryptedCipherAndKey[1:], sessionKey) + _, err = w.Write(encryptedCipherAndKey) + if err != nil { + return + } + + key = sessionKey + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetrically_encrypted.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetrically_encrypted.go new file mode 100644 index 00000000000..6126030eb90 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/symmetrically_encrypted.go @@ -0,0 +1,290 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "crypto/cipher" + "crypto/sha1" + "crypto/subtle" + "golang.org/x/crypto/openpgp/errors" + "hash" + "io" + "strconv" +) + +// SymmetricallyEncrypted represents a symmetrically encrypted byte string. The +// encrypted contents will consist of more OpenPGP packets. See RFC 4880, +// sections 5.7 and 5.13. +type SymmetricallyEncrypted struct { + MDC bool // true iff this is a type 18 packet and thus has an embedded MAC. + contents io.Reader + prefix []byte +} + +const symmetricallyEncryptedVersion = 1 + +func (se *SymmetricallyEncrypted) parse(r io.Reader) error { + if se.MDC { + // See RFC 4880, section 5.13. + var buf [1]byte + _, err := readFull(r, buf[:]) + if err != nil { + return err + } + if buf[0] != symmetricallyEncryptedVersion { + return errors.UnsupportedError("unknown SymmetricallyEncrypted version") + } + } + se.contents = r + return nil +} + +// Decrypt returns a ReadCloser, from which the decrypted contents of the +// packet can be read. An incorrect key can, with high probability, be detected +// immediately and this will result in a KeyIncorrect error being returned. +func (se *SymmetricallyEncrypted) Decrypt(c CipherFunction, key []byte) (io.ReadCloser, error) { + keySize := c.KeySize() + if keySize == 0 { + return nil, errors.UnsupportedError("unknown cipher: " + strconv.Itoa(int(c))) + } + if len(key) != keySize { + return nil, errors.InvalidArgumentError("SymmetricallyEncrypted: incorrect key length") + } + + if se.prefix == nil { + se.prefix = make([]byte, c.blockSize()+2) + _, err := readFull(se.contents, se.prefix) + if err != nil { + return nil, err + } + } else if len(se.prefix) != c.blockSize()+2 { + return nil, errors.InvalidArgumentError("can't try ciphers with different block lengths") + } + + ocfbResync := OCFBResync + if se.MDC { + // MDC packets use a different form of OCFB mode. + ocfbResync = OCFBNoResync + } + + s := NewOCFBDecrypter(c.new(key), se.prefix, ocfbResync) + if s == nil { + return nil, errors.ErrKeyIncorrect + } + + plaintext := cipher.StreamReader{S: s, R: se.contents} + + if se.MDC { + // MDC packets have an embedded hash that we need to check. + h := sha1.New() + h.Write(se.prefix) + return &seMDCReader{in: plaintext, h: h}, nil + } + + // Otherwise, we just need to wrap plaintext so that it's a valid ReadCloser. + return seReader{plaintext}, nil +} + +// seReader wraps an io.Reader with a no-op Close method. +type seReader struct { + in io.Reader +} + +func (ser seReader) Read(buf []byte) (int, error) { + return ser.in.Read(buf) +} + +func (ser seReader) Close() error { + return nil +} + +const mdcTrailerSize = 1 /* tag byte */ + 1 /* length byte */ + sha1.Size + +// An seMDCReader wraps an io.Reader, maintains a running hash and keeps hold +// of the most recent 22 bytes (mdcTrailerSize). Upon EOF, those bytes form an +// MDC packet containing a hash of the previous contents which is checked +// against the running hash. See RFC 4880, section 5.13. +type seMDCReader struct { + in io.Reader + h hash.Hash + trailer [mdcTrailerSize]byte + scratch [mdcTrailerSize]byte + trailerUsed int + error bool + eof bool +} + +func (ser *seMDCReader) Read(buf []byte) (n int, err error) { + if ser.error { + err = io.ErrUnexpectedEOF + return + } + if ser.eof { + err = io.EOF + return + } + + // If we haven't yet filled the trailer buffer then we must do that + // first. + for ser.trailerUsed < mdcTrailerSize { + n, err = ser.in.Read(ser.trailer[ser.trailerUsed:]) + ser.trailerUsed += n + if err == io.EOF { + if ser.trailerUsed != mdcTrailerSize { + n = 0 + err = io.ErrUnexpectedEOF + ser.error = true + return + } + ser.eof = true + n = 0 + return + } + + if err != nil { + n = 0 + return + } + } + + // If it's a short read then we read into a temporary buffer and shift + // the data into the caller's buffer. + if len(buf) <= mdcTrailerSize { + n, err = readFull(ser.in, ser.scratch[:len(buf)]) + copy(buf, ser.trailer[:n]) + ser.h.Write(buf[:n]) + copy(ser.trailer[:], ser.trailer[n:]) + copy(ser.trailer[mdcTrailerSize-n:], ser.scratch[:]) + if n < len(buf) { + ser.eof = true + err = io.EOF + } + return + } + + n, err = ser.in.Read(buf[mdcTrailerSize:]) + copy(buf, ser.trailer[:]) + ser.h.Write(buf[:n]) + copy(ser.trailer[:], buf[n:]) + + if err == io.EOF { + ser.eof = true + } + return +} + +// This is a new-format packet tag byte for a type 19 (MDC) packet. +const mdcPacketTagByte = byte(0x80) | 0x40 | 19 + +func (ser *seMDCReader) Close() error { + if ser.error { + return errors.SignatureError("error during reading") + } + + for !ser.eof { + // We haven't seen EOF so we need to read to the end + var buf [1024]byte + _, err := ser.Read(buf[:]) + if err == io.EOF { + break + } + if err != nil { + return errors.SignatureError("error during reading") + } + } + + if ser.trailer[0] != mdcPacketTagByte || ser.trailer[1] != sha1.Size { + return errors.SignatureError("MDC packet not found") + } + ser.h.Write(ser.trailer[:2]) + + final := ser.h.Sum(nil) + if subtle.ConstantTimeCompare(final, ser.trailer[2:]) != 1 { + return errors.SignatureError("hash mismatch") + } + return nil +} + +// An seMDCWriter writes through to an io.WriteCloser while maintains a running +// hash of the data written. On close, it emits an MDC packet containing the +// running hash. +type seMDCWriter struct { + w io.WriteCloser + h hash.Hash +} + +func (w *seMDCWriter) Write(buf []byte) (n int, err error) { + w.h.Write(buf) + return w.w.Write(buf) +} + +func (w *seMDCWriter) Close() (err error) { + var buf [mdcTrailerSize]byte + + buf[0] = mdcPacketTagByte + buf[1] = sha1.Size + w.h.Write(buf[:2]) + digest := w.h.Sum(nil) + copy(buf[2:], digest) + + _, err = w.w.Write(buf[:]) + if err != nil { + return + } + return w.w.Close() +} + +// noOpCloser is like an ioutil.NopCloser, but for an io.Writer. +type noOpCloser struct { + w io.Writer +} + +func (c noOpCloser) Write(data []byte) (n int, err error) { + return c.w.Write(data) +} + +func (c noOpCloser) Close() error { + return nil +} + +// SerializeSymmetricallyEncrypted serializes a symmetrically encrypted packet +// to w and returns a WriteCloser to which the to-be-encrypted packets can be +// written. +// If config is nil, sensible defaults will be used. +func SerializeSymmetricallyEncrypted(w io.Writer, c CipherFunction, key []byte, config *Config) (contents io.WriteCloser, err error) { + if c.KeySize() != len(key) { + return nil, errors.InvalidArgumentError("SymmetricallyEncrypted.Serialize: bad key length") + } + writeCloser := noOpCloser{w} + ciphertext, err := serializeStreamHeader(writeCloser, packetTypeSymmetricallyEncryptedMDC) + if err != nil { + return + } + + _, err = ciphertext.Write([]byte{symmetricallyEncryptedVersion}) + if err != nil { + return + } + + block := c.new(key) + blockSize := block.BlockSize() + iv := make([]byte, blockSize) + _, err = config.Random().Read(iv) + if err != nil { + return + } + s, prefix := NewOCFBEncrypter(block, iv, OCFBNoResync) + _, err = ciphertext.Write(prefix) + if err != nil { + return + } + plaintext := cipher.StreamWriter{S: s, W: ciphertext} + + h := sha1.New() + h.Write(iv) + h.Write(iv[blockSize-2:]) + contents = &seMDCWriter{w: plaintext, h: h} + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userattribute.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userattribute.go new file mode 100644 index 00000000000..96a2b382a1d --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userattribute.go @@ -0,0 +1,91 @@ +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "bytes" + "image" + "image/jpeg" + "io" + "io/ioutil" +) + +const UserAttrImageSubpacket = 1 + +// UserAttribute is capable of storing other types of data about a user +// beyond name, email and a text comment. In practice, user attributes are typically used +// to store a signed thumbnail photo JPEG image of the user. +// See RFC 4880, section 5.12. +type UserAttribute struct { + Contents []*OpaqueSubpacket +} + +// NewUserAttributePhoto creates a user attribute packet +// containing the given images. +func NewUserAttributePhoto(photos ...image.Image) (uat *UserAttribute, err error) { + uat = new(UserAttribute) + for _, photo := range photos { + var buf bytes.Buffer + // RFC 4880, Section 5.12.1. + data := []byte{ + 0x10, 0x00, // Little-endian image header length (16 bytes) + 0x01, // Image header version 1 + 0x01, // JPEG + 0, 0, 0, 0, // 12 reserved octets, must be all zero. + 0, 0, 0, 0, + 0, 0, 0, 0} + if _, err = buf.Write(data); err != nil { + return + } + if err = jpeg.Encode(&buf, photo, nil); err != nil { + return + } + uat.Contents = append(uat.Contents, &OpaqueSubpacket{ + SubType: UserAttrImageSubpacket, + Contents: buf.Bytes()}) + } + return +} + +// NewUserAttribute creates a new user attribute packet containing the given subpackets. +func NewUserAttribute(contents ...*OpaqueSubpacket) *UserAttribute { + return &UserAttribute{Contents: contents} +} + +func (uat *UserAttribute) parse(r io.Reader) (err error) { + // RFC 4880, section 5.13 + b, err := ioutil.ReadAll(r) + if err != nil { + return + } + uat.Contents, err = OpaqueSubpackets(b) + return +} + +// Serialize marshals the user attribute to w in the form of an OpenPGP packet, including +// header. +func (uat *UserAttribute) Serialize(w io.Writer) (err error) { + var buf bytes.Buffer + for _, sp := range uat.Contents { + sp.Serialize(&buf) + } + if err = serializeHeader(w, packetTypeUserAttribute, buf.Len()); err != nil { + return err + } + _, err = w.Write(buf.Bytes()) + return +} + +// ImageData returns zero or more byte slices, each containing +// JPEG File Interchange Format (JFIF), for each photo in the +// the user attribute packet. +func (uat *UserAttribute) ImageData() (imageData [][]byte) { + for _, sp := range uat.Contents { + if sp.SubType == UserAttrImageSubpacket && len(sp.Contents) > 16 { + imageData = append(imageData, sp.Contents[16:]) + } + } + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userid.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userid.go new file mode 100644 index 00000000000..d6bea7d4acc --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/packet/userid.go @@ -0,0 +1,160 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package packet + +import ( + "io" + "io/ioutil" + "strings" +) + +// UserId contains text that is intended to represent the name and email +// address of the key holder. See RFC 4880, section 5.11. By convention, this +// takes the form "Full Name (Comment) " +type UserId struct { + Id string // By convention, this takes the form "Full Name (Comment) " which is split out in the fields below. + + Name, Comment, Email string +} + +func hasInvalidCharacters(s string) bool { + for _, c := range s { + switch c { + case '(', ')', '<', '>', 0: + return true + } + } + return false +} + +// NewUserId returns a UserId or nil if any of the arguments contain invalid +// characters. The invalid characters are '\x00', '(', ')', '<' and '>' +func NewUserId(name, comment, email string) *UserId { + // RFC 4880 doesn't deal with the structure of userid strings; the + // name, comment and email form is just a convention. However, there's + // no convention about escaping the metacharacters and GPG just refuses + // to create user ids where, say, the name contains a '('. We mirror + // this behaviour. + + if hasInvalidCharacters(name) || hasInvalidCharacters(comment) || hasInvalidCharacters(email) { + return nil + } + + uid := new(UserId) + uid.Name, uid.Comment, uid.Email = name, comment, email + uid.Id = name + if len(comment) > 0 { + if len(uid.Id) > 0 { + uid.Id += " " + } + uid.Id += "(" + uid.Id += comment + uid.Id += ")" + } + if len(email) > 0 { + if len(uid.Id) > 0 { + uid.Id += " " + } + uid.Id += "<" + uid.Id += email + uid.Id += ">" + } + return uid +} + +func (uid *UserId) parse(r io.Reader) (err error) { + // RFC 4880, section 5.11 + b, err := ioutil.ReadAll(r) + if err != nil { + return + } + uid.Id = string(b) + uid.Name, uid.Comment, uid.Email = parseUserId(uid.Id) + return +} + +// Serialize marshals uid to w in the form of an OpenPGP packet, including +// header. +func (uid *UserId) Serialize(w io.Writer) error { + err := serializeHeader(w, packetTypeUserId, len(uid.Id)) + if err != nil { + return err + } + _, err = w.Write([]byte(uid.Id)) + return err +} + +// parseUserId extracts the name, comment and email from a user id string that +// is formatted as "Full Name (Comment) ". +func parseUserId(id string) (name, comment, email string) { + var n, c, e struct { + start, end int + } + var state int + + for offset, rune := range id { + switch state { + case 0: + // Entering name + n.start = offset + state = 1 + fallthrough + case 1: + // In name + if rune == '(' { + state = 2 + n.end = offset + } else if rune == '<' { + state = 5 + n.end = offset + } + case 2: + // Entering comment + c.start = offset + state = 3 + fallthrough + case 3: + // In comment + if rune == ')' { + state = 4 + c.end = offset + } + case 4: + // Between comment and email + if rune == '<' { + state = 5 + } + case 5: + // Entering email + e.start = offset + state = 6 + fallthrough + case 6: + // In email + if rune == '>' { + state = 7 + e.end = offset + } + default: + // After email + } + } + switch state { + case 1: + // ended in the name + n.end = len(id) + case 3: + // ended in comment + c.end = len(id) + case 6: + // ended in email + e.end = len(id) + } + + name = strings.TrimSpace(id[n.start:n.end]) + comment = strings.TrimSpace(id[c.start:c.end]) + email = strings.TrimSpace(id[e.start:e.end]) + return +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/read.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/read.go new file mode 100644 index 00000000000..6ec664f44a1 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/read.go @@ -0,0 +1,442 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package openpgp implements high level operations on OpenPGP messages. +package openpgp // import "golang.org/x/crypto/openpgp" + +import ( + "crypto" + _ "crypto/sha256" + "hash" + "io" + "strconv" + + "golang.org/x/crypto/openpgp/armor" + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/packet" +) + +// SignatureType is the armor type for a PGP signature. +var SignatureType = "PGP SIGNATURE" + +// readArmored reads an armored block with the given type. +func readArmored(r io.Reader, expectedType string) (body io.Reader, err error) { + block, err := armor.Decode(r) + if err != nil { + return + } + + if block.Type != expectedType { + return nil, errors.InvalidArgumentError("expected '" + expectedType + "', got: " + block.Type) + } + + return block.Body, nil +} + +// MessageDetails contains the result of parsing an OpenPGP encrypted and/or +// signed message. +type MessageDetails struct { + IsEncrypted bool // true if the message was encrypted. + EncryptedToKeyIds []uint64 // the list of recipient key ids. + IsSymmetricallyEncrypted bool // true if a passphrase could have decrypted the message. + DecryptedWith Key // the private key used to decrypt the message, if any. + IsSigned bool // true if the message is signed. + SignedByKeyId uint64 // the key id of the signer, if any. + SignedBy *Key // the key of the signer, if available. + LiteralData *packet.LiteralData // the metadata of the contents + UnverifiedBody io.Reader // the contents of the message. + + // If IsSigned is true and SignedBy is non-zero then the signature will + // be verified as UnverifiedBody is read. The signature cannot be + // checked until the whole of UnverifiedBody is read so UnverifiedBody + // must be consumed until EOF before the data can be trusted. Even if a + // message isn't signed (or the signer is unknown) the data may contain + // an authentication code that is only checked once UnverifiedBody has + // been consumed. Once EOF has been seen, the following fields are + // valid. (An authentication code failure is reported as a + // SignatureError error when reading from UnverifiedBody.) + SignatureError error // nil if the signature is good. + Signature *packet.Signature // the signature packet itself, if v4 (default) + SignatureV3 *packet.SignatureV3 // the signature packet if it is a v2 or v3 signature + + decrypted io.ReadCloser +} + +// A PromptFunction is used as a callback by functions that may need to decrypt +// a private key, or prompt for a passphrase. It is called with a list of +// acceptable, encrypted private keys and a boolean that indicates whether a +// passphrase is usable. It should either decrypt a private key or return a +// passphrase to try. If the decrypted private key or given passphrase isn't +// correct, the function will be called again, forever. Any error returned will +// be passed up. +type PromptFunction func(keys []Key, symmetric bool) ([]byte, error) + +// A keyEnvelopePair is used to store a private key with the envelope that +// contains a symmetric key, encrypted with that key. +type keyEnvelopePair struct { + key Key + encryptedKey *packet.EncryptedKey +} + +// ReadMessage parses an OpenPGP message that may be signed and/or encrypted. +// The given KeyRing should contain both public keys (for signature +// verification) and, possibly encrypted, private keys for decrypting. +// If config is nil, sensible defaults will be used. +func ReadMessage(r io.Reader, keyring KeyRing, prompt PromptFunction, config *packet.Config) (md *MessageDetails, err error) { + var p packet.Packet + + var symKeys []*packet.SymmetricKeyEncrypted + var pubKeys []keyEnvelopePair + var se *packet.SymmetricallyEncrypted + + packets := packet.NewReader(r) + md = new(MessageDetails) + md.IsEncrypted = true + + // The message, if encrypted, starts with a number of packets + // containing an encrypted decryption key. The decryption key is either + // encrypted to a public key, or with a passphrase. This loop + // collects these packets. +ParsePackets: + for { + p, err = packets.Next() + if err != nil { + return nil, err + } + switch p := p.(type) { + case *packet.SymmetricKeyEncrypted: + // This packet contains the decryption key encrypted with a passphrase. + md.IsSymmetricallyEncrypted = true + symKeys = append(symKeys, p) + case *packet.EncryptedKey: + // This packet contains the decryption key encrypted to a public key. + md.EncryptedToKeyIds = append(md.EncryptedToKeyIds, p.KeyId) + switch p.Algo { + case packet.PubKeyAlgoRSA, packet.PubKeyAlgoRSAEncryptOnly, packet.PubKeyAlgoElGamal: + break + default: + continue + } + var keys []Key + if p.KeyId == 0 { + keys = keyring.DecryptionKeys() + } else { + keys = keyring.KeysById(p.KeyId) + } + for _, k := range keys { + pubKeys = append(pubKeys, keyEnvelopePair{k, p}) + } + case *packet.SymmetricallyEncrypted: + se = p + break ParsePackets + case *packet.Compressed, *packet.LiteralData, *packet.OnePassSignature: + // This message isn't encrypted. + if len(symKeys) != 0 || len(pubKeys) != 0 { + return nil, errors.StructuralError("key material not followed by encrypted message") + } + packets.Unread(p) + return readSignedMessage(packets, nil, keyring) + } + } + + var candidates []Key + var decrypted io.ReadCloser + + // Now that we have the list of encrypted keys we need to decrypt at + // least one of them or, if we cannot, we need to call the prompt + // function so that it can decrypt a key or give us a passphrase. +FindKey: + for { + // See if any of the keys already have a private key available + candidates = candidates[:0] + candidateFingerprints := make(map[string]bool) + + for _, pk := range pubKeys { + if pk.key.PrivateKey == nil { + continue + } + if !pk.key.PrivateKey.Encrypted { + if len(pk.encryptedKey.Key) == 0 { + pk.encryptedKey.Decrypt(pk.key.PrivateKey, config) + } + if len(pk.encryptedKey.Key) == 0 { + continue + } + decrypted, err = se.Decrypt(pk.encryptedKey.CipherFunc, pk.encryptedKey.Key) + if err != nil && err != errors.ErrKeyIncorrect { + return nil, err + } + if decrypted != nil { + md.DecryptedWith = pk.key + break FindKey + } + } else { + fpr := string(pk.key.PublicKey.Fingerprint[:]) + if v := candidateFingerprints[fpr]; v { + continue + } + candidates = append(candidates, pk.key) + candidateFingerprints[fpr] = true + } + } + + if len(candidates) == 0 && len(symKeys) == 0 { + return nil, errors.ErrKeyIncorrect + } + + if prompt == nil { + return nil, errors.ErrKeyIncorrect + } + + passphrase, err := prompt(candidates, len(symKeys) != 0) + if err != nil { + return nil, err + } + + // Try the symmetric passphrase first + if len(symKeys) != 0 && passphrase != nil { + for _, s := range symKeys { + key, cipherFunc, err := s.Decrypt(passphrase) + if err == nil { + decrypted, err = se.Decrypt(cipherFunc, key) + if err != nil && err != errors.ErrKeyIncorrect { + return nil, err + } + if decrypted != nil { + break FindKey + } + } + + } + } + } + + md.decrypted = decrypted + if err := packets.Push(decrypted); err != nil { + return nil, err + } + return readSignedMessage(packets, md, keyring) +} + +// readSignedMessage reads a possibly signed message if mdin is non-zero then +// that structure is updated and returned. Otherwise a fresh MessageDetails is +// used. +func readSignedMessage(packets *packet.Reader, mdin *MessageDetails, keyring KeyRing) (md *MessageDetails, err error) { + if mdin == nil { + mdin = new(MessageDetails) + } + md = mdin + + var p packet.Packet + var h hash.Hash + var wrappedHash hash.Hash +FindLiteralData: + for { + p, err = packets.Next() + if err != nil { + return nil, err + } + switch p := p.(type) { + case *packet.Compressed: + if err := packets.Push(p.Body); err != nil { + return nil, err + } + case *packet.OnePassSignature: + if !p.IsLast { + return nil, errors.UnsupportedError("nested signatures") + } + + h, wrappedHash, err = hashForSignature(p.Hash, p.SigType) + if err != nil { + md = nil + return + } + + md.IsSigned = true + md.SignedByKeyId = p.KeyId + keys := keyring.KeysByIdUsage(p.KeyId, packet.KeyFlagSign) + if len(keys) > 0 { + md.SignedBy = &keys[0] + } + case *packet.LiteralData: + md.LiteralData = p + break FindLiteralData + } + } + + if md.SignedBy != nil { + md.UnverifiedBody = &signatureCheckReader{packets, h, wrappedHash, md} + } else if md.decrypted != nil { + md.UnverifiedBody = checkReader{md} + } else { + md.UnverifiedBody = md.LiteralData.Body + } + + return md, nil +} + +// hashForSignature returns a pair of hashes that can be used to verify a +// signature. The signature may specify that the contents of the signed message +// should be preprocessed (i.e. to normalize line endings). Thus this function +// returns two hashes. The second should be used to hash the message itself and +// performs any needed preprocessing. +func hashForSignature(hashId crypto.Hash, sigType packet.SignatureType) (hash.Hash, hash.Hash, error) { + if !hashId.Available() { + return nil, nil, errors.UnsupportedError("hash not available: " + strconv.Itoa(int(hashId))) + } + h := hashId.New() + + switch sigType { + case packet.SigTypeBinary: + return h, h, nil + case packet.SigTypeText: + return h, NewCanonicalTextHash(h), nil + } + + return nil, nil, errors.UnsupportedError("unsupported signature type: " + strconv.Itoa(int(sigType))) +} + +// checkReader wraps an io.Reader from a LiteralData packet. When it sees EOF +// it closes the ReadCloser from any SymmetricallyEncrypted packet to trigger +// MDC checks. +type checkReader struct { + md *MessageDetails +} + +func (cr checkReader) Read(buf []byte) (n int, err error) { + n, err = cr.md.LiteralData.Body.Read(buf) + if err == io.EOF { + mdcErr := cr.md.decrypted.Close() + if mdcErr != nil { + err = mdcErr + } + } + return +} + +// signatureCheckReader wraps an io.Reader from a LiteralData packet and hashes +// the data as it is read. When it sees an EOF from the underlying io.Reader +// it parses and checks a trailing Signature packet and triggers any MDC checks. +type signatureCheckReader struct { + packets *packet.Reader + h, wrappedHash hash.Hash + md *MessageDetails +} + +func (scr *signatureCheckReader) Read(buf []byte) (n int, err error) { + n, err = scr.md.LiteralData.Body.Read(buf) + scr.wrappedHash.Write(buf[:n]) + if err == io.EOF { + var p packet.Packet + p, scr.md.SignatureError = scr.packets.Next() + if scr.md.SignatureError != nil { + return + } + + var ok bool + if scr.md.Signature, ok = p.(*packet.Signature); ok { + scr.md.SignatureError = scr.md.SignedBy.PublicKey.VerifySignature(scr.h, scr.md.Signature) + } else if scr.md.SignatureV3, ok = p.(*packet.SignatureV3); ok { + scr.md.SignatureError = scr.md.SignedBy.PublicKey.VerifySignatureV3(scr.h, scr.md.SignatureV3) + } else { + scr.md.SignatureError = errors.StructuralError("LiteralData not followed by Signature") + return + } + + // The SymmetricallyEncrypted packet, if any, might have an + // unsigned hash of its own. In order to check this we need to + // close that Reader. + if scr.md.decrypted != nil { + mdcErr := scr.md.decrypted.Close() + if mdcErr != nil { + err = mdcErr + } + } + } + return +} + +// CheckDetachedSignature takes a signed file and a detached signature and +// returns the signer if the signature is valid. If the signer isn't known, +// ErrUnknownIssuer is returned. +func CheckDetachedSignature(keyring KeyRing, signed, signature io.Reader) (signer *Entity, err error) { + var issuerKeyId uint64 + var hashFunc crypto.Hash + var sigType packet.SignatureType + var keys []Key + var p packet.Packet + + packets := packet.NewReader(signature) + for { + p, err = packets.Next() + if err == io.EOF { + return nil, errors.ErrUnknownIssuer + } + if err != nil { + return nil, err + } + + switch sig := p.(type) { + case *packet.Signature: + if sig.IssuerKeyId == nil { + return nil, errors.StructuralError("signature doesn't have an issuer") + } + issuerKeyId = *sig.IssuerKeyId + hashFunc = sig.Hash + sigType = sig.SigType + case *packet.SignatureV3: + issuerKeyId = sig.IssuerKeyId + hashFunc = sig.Hash + sigType = sig.SigType + default: + return nil, errors.StructuralError("non signature packet found") + } + + keys = keyring.KeysByIdUsage(issuerKeyId, packet.KeyFlagSign) + if len(keys) > 0 { + break + } + } + + if len(keys) == 0 { + panic("unreachable") + } + + h, wrappedHash, err := hashForSignature(hashFunc, sigType) + if err != nil { + return nil, err + } + + if _, err := io.Copy(wrappedHash, signed); err != nil && err != io.EOF { + return nil, err + } + + for _, key := range keys { + switch sig := p.(type) { + case *packet.Signature: + err = key.PublicKey.VerifySignature(h, sig) + case *packet.SignatureV3: + err = key.PublicKey.VerifySignatureV3(h, sig) + default: + panic("unreachable") + } + + if err == nil { + return key.Entity, nil + } + } + + return nil, err +} + +// CheckArmoredDetachedSignature performs the same actions as +// CheckDetachedSignature but expects the signature to be armored. +func CheckArmoredDetachedSignature(keyring KeyRing, signed, signature io.Reader) (signer *Entity, err error) { + body, err := readArmored(signature, SignatureType) + if err != nil { + return + } + + return CheckDetachedSignature(keyring, signed, body) +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/s2k/s2k.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/s2k/s2k.go new file mode 100644 index 00000000000..4b9a44ca26d --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/s2k/s2k.go @@ -0,0 +1,273 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Package s2k implements the various OpenPGP string-to-key transforms as +// specified in RFC 4800 section 3.7.1. +package s2k // import "golang.org/x/crypto/openpgp/s2k" + +import ( + "crypto" + "hash" + "io" + "strconv" + + "golang.org/x/crypto/openpgp/errors" +) + +// Config collects configuration parameters for s2k key-stretching +// transformatioms. A nil *Config is valid and results in all default +// values. Currently, Config is used only by the Serialize function in +// this package. +type Config struct { + // Hash is the default hash function to be used. If + // nil, SHA1 is used. + Hash crypto.Hash + // S2KCount is only used for symmetric encryption. It + // determines the strength of the passphrase stretching when + // the said passphrase is hashed to produce a key. S2KCount + // should be between 1024 and 65011712, inclusive. If Config + // is nil or S2KCount is 0, the value 65536 used. Not all + // values in the above range can be represented. S2KCount will + // be rounded up to the next representable value if it cannot + // be encoded exactly. When set, it is strongly encrouraged to + // use a value that is at least 65536. See RFC 4880 Section + // 3.7.1.3. + S2KCount int +} + +func (c *Config) hash() crypto.Hash { + if c == nil || uint(c.Hash) == 0 { + // SHA1 is the historical default in this package. + return crypto.SHA1 + } + + return c.Hash +} + +func (c *Config) encodedCount() uint8 { + if c == nil || c.S2KCount == 0 { + return 96 // The common case. Correspoding to 65536 + } + + i := c.S2KCount + switch { + // Behave like GPG. Should we make 65536 the lowest value used? + case i < 1024: + i = 1024 + case i > 65011712: + i = 65011712 + } + + return encodeCount(i) +} + +// encodeCount converts an iterative "count" in the range 1024 to +// 65011712, inclusive, to an encoded count. The return value is the +// octet that is actually stored in the GPG file. encodeCount panics +// if i is not in the above range (encodedCount above takes care to +// pass i in the correct range). See RFC 4880 Section 3.7.7.1. +func encodeCount(i int) uint8 { + if i < 1024 || i > 65011712 { + panic("count arg i outside the required range") + } + + for encoded := 0; encoded < 256; encoded++ { + count := decodeCount(uint8(encoded)) + if count >= i { + return uint8(encoded) + } + } + + return 255 +} + +// decodeCount returns the s2k mode 3 iterative "count" corresponding to +// the encoded octet c. +func decodeCount(c uint8) int { + return (16 + int(c&15)) << (uint32(c>>4) + 6) +} + +// Simple writes to out the result of computing the Simple S2K function (RFC +// 4880, section 3.7.1.1) using the given hash and input passphrase. +func Simple(out []byte, h hash.Hash, in []byte) { + Salted(out, h, in, nil) +} + +var zero [1]byte + +// Salted writes to out the result of computing the Salted S2K function (RFC +// 4880, section 3.7.1.2) using the given hash, input passphrase and salt. +func Salted(out []byte, h hash.Hash, in []byte, salt []byte) { + done := 0 + var digest []byte + + for i := 0; done < len(out); i++ { + h.Reset() + for j := 0; j < i; j++ { + h.Write(zero[:]) + } + h.Write(salt) + h.Write(in) + digest = h.Sum(digest[:0]) + n := copy(out[done:], digest) + done += n + } +} + +// Iterated writes to out the result of computing the Iterated and Salted S2K +// function (RFC 4880, section 3.7.1.3) using the given hash, input passphrase, +// salt and iteration count. +func Iterated(out []byte, h hash.Hash, in []byte, salt []byte, count int) { + combined := make([]byte, len(in)+len(salt)) + copy(combined, salt) + copy(combined[len(salt):], in) + + if count < len(combined) { + count = len(combined) + } + + done := 0 + var digest []byte + for i := 0; done < len(out); i++ { + h.Reset() + for j := 0; j < i; j++ { + h.Write(zero[:]) + } + written := 0 + for written < count { + if written+len(combined) > count { + todo := count - written + h.Write(combined[:todo]) + written = count + } else { + h.Write(combined) + written += len(combined) + } + } + digest = h.Sum(digest[:0]) + n := copy(out[done:], digest) + done += n + } +} + +// Parse reads a binary specification for a string-to-key transformation from r +// and returns a function which performs that transform. +func Parse(r io.Reader) (f func(out, in []byte), err error) { + var buf [9]byte + + _, err = io.ReadFull(r, buf[:2]) + if err != nil { + return + } + + hash, ok := HashIdToHash(buf[1]) + if !ok { + return nil, errors.UnsupportedError("hash for S2K function: " + strconv.Itoa(int(buf[1]))) + } + if !hash.Available() { + return nil, errors.UnsupportedError("hash not available: " + strconv.Itoa(int(hash))) + } + h := hash.New() + + switch buf[0] { + case 0: + f := func(out, in []byte) { + Simple(out, h, in) + } + return f, nil + case 1: + _, err = io.ReadFull(r, buf[:8]) + if err != nil { + return + } + f := func(out, in []byte) { + Salted(out, h, in, buf[:8]) + } + return f, nil + case 3: + _, err = io.ReadFull(r, buf[:9]) + if err != nil { + return + } + count := decodeCount(buf[8]) + f := func(out, in []byte) { + Iterated(out, h, in, buf[:8], count) + } + return f, nil + } + + return nil, errors.UnsupportedError("S2K function") +} + +// Serialize salts and stretches the given passphrase and writes the +// resulting key into key. It also serializes an S2K descriptor to +// w. The key stretching can be configured with c, which may be +// nil. In that case, sensible defaults will be used. +func Serialize(w io.Writer, key []byte, rand io.Reader, passphrase []byte, c *Config) error { + var buf [11]byte + buf[0] = 3 /* iterated and salted */ + buf[1], _ = HashToHashId(c.hash()) + salt := buf[2:10] + if _, err := io.ReadFull(rand, salt); err != nil { + return err + } + encodedCount := c.encodedCount() + count := decodeCount(encodedCount) + buf[10] = encodedCount + if _, err := w.Write(buf[:]); err != nil { + return err + } + + Iterated(key, c.hash().New(), passphrase, salt, count) + return nil +} + +// hashToHashIdMapping contains pairs relating OpenPGP's hash identifier with +// Go's crypto.Hash type. See RFC 4880, section 9.4. +var hashToHashIdMapping = []struct { + id byte + hash crypto.Hash + name string +}{ + {1, crypto.MD5, "MD5"}, + {2, crypto.SHA1, "SHA1"}, + {3, crypto.RIPEMD160, "RIPEMD160"}, + {8, crypto.SHA256, "SHA256"}, + {9, crypto.SHA384, "SHA384"}, + {10, crypto.SHA512, "SHA512"}, + {11, crypto.SHA224, "SHA224"}, +} + +// HashIdToHash returns a crypto.Hash which corresponds to the given OpenPGP +// hash id. +func HashIdToHash(id byte) (h crypto.Hash, ok bool) { + for _, m := range hashToHashIdMapping { + if m.id == id { + return m.hash, true + } + } + return 0, false +} + +// HashIdToString returns the name of the hash function corresponding to the +// given OpenPGP hash id. +func HashIdToString(id byte) (name string, ok bool) { + for _, m := range hashToHashIdMapping { + if m.id == id { + return m.name, true + } + } + + return "", false +} + +// HashIdToHash returns an OpenPGP hash id which corresponds the given Hash. +func HashToHashId(h crypto.Hash) (id byte, ok bool) { + for _, m := range hashToHashIdMapping { + if m.hash == h { + return m.id, true + } + } + return 0, false +} diff --git a/dev-tools/vendor/golang.org/x/crypto/openpgp/write.go b/dev-tools/vendor/golang.org/x/crypto/openpgp/write.go new file mode 100644 index 00000000000..65a304cc867 --- /dev/null +++ b/dev-tools/vendor/golang.org/x/crypto/openpgp/write.go @@ -0,0 +1,378 @@ +// Copyright 2011 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package openpgp + +import ( + "crypto" + "hash" + "io" + "strconv" + "time" + + "golang.org/x/crypto/openpgp/armor" + "golang.org/x/crypto/openpgp/errors" + "golang.org/x/crypto/openpgp/packet" + "golang.org/x/crypto/openpgp/s2k" +) + +// DetachSign signs message with the private key from signer (which must +// already have been decrypted) and writes the signature to w. +// If config is nil, sensible defaults will be used. +func DetachSign(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error { + return detachSign(w, signer, message, packet.SigTypeBinary, config) +} + +// ArmoredDetachSign signs message with the private key from signer (which +// must already have been decrypted) and writes an armored signature to w. +// If config is nil, sensible defaults will be used. +func ArmoredDetachSign(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) (err error) { + return armoredDetachSign(w, signer, message, packet.SigTypeBinary, config) +} + +// DetachSignText signs message (after canonicalising the line endings) with +// the private key from signer (which must already have been decrypted) and +// writes the signature to w. +// If config is nil, sensible defaults will be used. +func DetachSignText(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error { + return detachSign(w, signer, message, packet.SigTypeText, config) +} + +// ArmoredDetachSignText signs message (after canonicalising the line endings) +// with the private key from signer (which must already have been decrypted) +// and writes an armored signature to w. +// If config is nil, sensible defaults will be used. +func ArmoredDetachSignText(w io.Writer, signer *Entity, message io.Reader, config *packet.Config) error { + return armoredDetachSign(w, signer, message, packet.SigTypeText, config) +} + +func armoredDetachSign(w io.Writer, signer *Entity, message io.Reader, sigType packet.SignatureType, config *packet.Config) (err error) { + out, err := armor.Encode(w, SignatureType, nil) + if err != nil { + return + } + err = detachSign(out, signer, message, sigType, config) + if err != nil { + return + } + return out.Close() +} + +func detachSign(w io.Writer, signer *Entity, message io.Reader, sigType packet.SignatureType, config *packet.Config) (err error) { + if signer.PrivateKey == nil { + return errors.InvalidArgumentError("signing key doesn't have a private key") + } + if signer.PrivateKey.Encrypted { + return errors.InvalidArgumentError("signing key is encrypted") + } + + sig := new(packet.Signature) + sig.SigType = sigType + sig.PubKeyAlgo = signer.PrivateKey.PubKeyAlgo + sig.Hash = config.Hash() + sig.CreationTime = config.Now() + sig.IssuerKeyId = &signer.PrivateKey.KeyId + + h, wrappedHash, err := hashForSignature(sig.Hash, sig.SigType) + if err != nil { + return + } + io.Copy(wrappedHash, message) + + err = sig.Sign(h, signer.PrivateKey, config) + if err != nil { + return + } + + return sig.Serialize(w) +} + +// FileHints contains metadata about encrypted files. This metadata is, itself, +// encrypted. +type FileHints struct { + // IsBinary can be set to hint that the contents are binary data. + IsBinary bool + // FileName hints at the name of the file that should be written. It's + // truncated to 255 bytes if longer. It may be empty to suggest that the + // file should not be written to disk. It may be equal to "_CONSOLE" to + // suggest the data should not be written to disk. + FileName string + // ModTime contains the modification time of the file, or the zero time if not applicable. + ModTime time.Time +} + +// SymmetricallyEncrypt acts like gpg -c: it encrypts a file with a passphrase. +// The resulting WriteCloser must be closed after the contents of the file have +// been written. +// If config is nil, sensible defaults will be used. +func SymmetricallyEncrypt(ciphertext io.Writer, passphrase []byte, hints *FileHints, config *packet.Config) (plaintext io.WriteCloser, err error) { + if hints == nil { + hints = &FileHints{} + } + + key, err := packet.SerializeSymmetricKeyEncrypted(ciphertext, passphrase, config) + if err != nil { + return + } + w, err := packet.SerializeSymmetricallyEncrypted(ciphertext, config.Cipher(), key, config) + if err != nil { + return + } + + literaldata := w + if algo := config.Compression(); algo != packet.CompressionNone { + var compConfig *packet.CompressionConfig + if config != nil { + compConfig = config.CompressionConfig + } + literaldata, err = packet.SerializeCompressed(w, algo, compConfig) + if err != nil { + return + } + } + + var epochSeconds uint32 + if !hints.ModTime.IsZero() { + epochSeconds = uint32(hints.ModTime.Unix()) + } + return packet.SerializeLiteral(literaldata, hints.IsBinary, hints.FileName, epochSeconds) +} + +// intersectPreferences mutates and returns a prefix of a that contains only +// the values in the intersection of a and b. The order of a is preserved. +func intersectPreferences(a []uint8, b []uint8) (intersection []uint8) { + var j int + for _, v := range a { + for _, v2 := range b { + if v == v2 { + a[j] = v + j++ + break + } + } + } + + return a[:j] +} + +func hashToHashId(h crypto.Hash) uint8 { + v, ok := s2k.HashToHashId(h) + if !ok { + panic("tried to convert unknown hash") + } + return v +} + +// Encrypt encrypts a message to a number of recipients and, optionally, signs +// it. hints contains optional information, that is also encrypted, that aids +// the recipients in processing the message. The resulting WriteCloser must +// be closed after the contents of the file have been written. +// If config is nil, sensible defaults will be used. +func Encrypt(ciphertext io.Writer, to []*Entity, signed *Entity, hints *FileHints, config *packet.Config) (plaintext io.WriteCloser, err error) { + var signer *packet.PrivateKey + if signed != nil { + signKey, ok := signed.signingKey(config.Now()) + if !ok { + return nil, errors.InvalidArgumentError("no valid signing keys") + } + signer = signKey.PrivateKey + if signer == nil { + return nil, errors.InvalidArgumentError("no private key in signing key") + } + if signer.Encrypted { + return nil, errors.InvalidArgumentError("signing key must be decrypted") + } + } + + // These are the possible ciphers that we'll use for the message. + candidateCiphers := []uint8{ + uint8(packet.CipherAES128), + uint8(packet.CipherAES256), + uint8(packet.CipherCAST5), + } + // These are the possible hash functions that we'll use for the signature. + candidateHashes := []uint8{ + hashToHashId(crypto.SHA256), + hashToHashId(crypto.SHA512), + hashToHashId(crypto.SHA1), + hashToHashId(crypto.RIPEMD160), + } + // In the event that a recipient doesn't specify any supported ciphers + // or hash functions, these are the ones that we assume that every + // implementation supports. + defaultCiphers := candidateCiphers[len(candidateCiphers)-1:] + defaultHashes := candidateHashes[len(candidateHashes)-1:] + + encryptKeys := make([]Key, len(to)) + for i := range to { + var ok bool + encryptKeys[i], ok = to[i].encryptionKey(config.Now()) + if !ok { + return nil, errors.InvalidArgumentError("cannot encrypt a message to key id " + strconv.FormatUint(to[i].PrimaryKey.KeyId, 16) + " because it has no encryption keys") + } + + sig := to[i].primaryIdentity().SelfSignature + + preferredSymmetric := sig.PreferredSymmetric + if len(preferredSymmetric) == 0 { + preferredSymmetric = defaultCiphers + } + preferredHashes := sig.PreferredHash + if len(preferredHashes) == 0 { + preferredHashes = defaultHashes + } + candidateCiphers = intersectPreferences(candidateCiphers, preferredSymmetric) + candidateHashes = intersectPreferences(candidateHashes, preferredHashes) + } + + if len(candidateCiphers) == 0 || len(candidateHashes) == 0 { + return nil, errors.InvalidArgumentError("cannot encrypt because recipient set shares no common algorithms") + } + + cipher := packet.CipherFunction(candidateCiphers[0]) + // If the cipher specified by config is a candidate, we'll use that. + configuredCipher := config.Cipher() + for _, c := range candidateCiphers { + cipherFunc := packet.CipherFunction(c) + if cipherFunc == configuredCipher { + cipher = cipherFunc + break + } + } + + var hash crypto.Hash + for _, hashId := range candidateHashes { + if h, ok := s2k.HashIdToHash(hashId); ok && h.Available() { + hash = h + break + } + } + + // If the hash specified by config is a candidate, we'll use that. + if configuredHash := config.Hash(); configuredHash.Available() { + for _, hashId := range candidateHashes { + if h, ok := s2k.HashIdToHash(hashId); ok && h == configuredHash { + hash = h + break + } + } + } + + if hash == 0 { + hashId := candidateHashes[0] + name, ok := s2k.HashIdToString(hashId) + if !ok { + name = "#" + strconv.Itoa(int(hashId)) + } + return nil, errors.InvalidArgumentError("cannot encrypt because no candidate hash functions are compiled in. (Wanted " + name + " in this case.)") + } + + symKey := make([]byte, cipher.KeySize()) + if _, err := io.ReadFull(config.Random(), symKey); err != nil { + return nil, err + } + + for _, key := range encryptKeys { + if err := packet.SerializeEncryptedKey(ciphertext, key.PublicKey, cipher, symKey, config); err != nil { + return nil, err + } + } + + encryptedData, err := packet.SerializeSymmetricallyEncrypted(ciphertext, cipher, symKey, config) + if err != nil { + return + } + + if signer != nil { + ops := &packet.OnePassSignature{ + SigType: packet.SigTypeBinary, + Hash: hash, + PubKeyAlgo: signer.PubKeyAlgo, + KeyId: signer.KeyId, + IsLast: true, + } + if err := ops.Serialize(encryptedData); err != nil { + return nil, err + } + } + + if hints == nil { + hints = &FileHints{} + } + + w := encryptedData + if signer != nil { + // If we need to write a signature packet after the literal + // data then we need to stop literalData from closing + // encryptedData. + w = noOpCloser{encryptedData} + + } + var epochSeconds uint32 + if !hints.ModTime.IsZero() { + epochSeconds = uint32(hints.ModTime.Unix()) + } + literalData, err := packet.SerializeLiteral(w, hints.IsBinary, hints.FileName, epochSeconds) + if err != nil { + return nil, err + } + + if signer != nil { + return signatureWriter{encryptedData, literalData, hash, hash.New(), signer, config}, nil + } + return literalData, nil +} + +// signatureWriter hashes the contents of a message while passing it along to +// literalData. When closed, it closes literalData, writes a signature packet +// to encryptedData and then also closes encryptedData. +type signatureWriter struct { + encryptedData io.WriteCloser + literalData io.WriteCloser + hashType crypto.Hash + h hash.Hash + signer *packet.PrivateKey + config *packet.Config +} + +func (s signatureWriter) Write(data []byte) (int, error) { + s.h.Write(data) + return s.literalData.Write(data) +} + +func (s signatureWriter) Close() error { + sig := &packet.Signature{ + SigType: packet.SigTypeBinary, + PubKeyAlgo: s.signer.PubKeyAlgo, + Hash: s.hashType, + CreationTime: s.config.Now(), + IssuerKeyId: &s.signer.KeyId, + } + + if err := sig.Sign(s.h, s.signer, s.config); err != nil { + return err + } + if err := s.literalData.Close(); err != nil { + return err + } + if err := sig.Serialize(s.encryptedData); err != nil { + return err + } + return s.encryptedData.Close() +} + +// noOpCloser is like an ioutil.NopCloser, but for an io.Writer. +// TODO: we have two of these in OpenPGP packages alone. This probably needs +// to be promoted somewhere more common. +type noOpCloser struct { + w io.Writer +} + +func (c noOpCloser) Write(data []byte) (n int, err error) { + return c.w.Write(data) +} + +func (c noOpCloser) Close() error { + return nil +} From c966fcafb4adc3a06561508fae63766ba9161b26 Mon Sep 17 00:00:00 2001 From: Andrew Kroh Date: Mon, 16 Jan 2017 10:29:04 -0500 Subject: [PATCH 3/3] Set config file mode to 0600 in packages This PR changes the main config file (.yml) from 0644 to 0600. It adds a test that checks all RPM, deb, tar.gz, and zip files to ensure that the config file has the correct file mode. --- CHANGELOG.asciidoc | 1 + Makefile | 2 + dev-tools/package_test.go | 289 +++++++++++++++++++ dev-tools/packer/xgo-scripts/before_build.sh | 3 + 4 files changed, 295 insertions(+) create mode 100644 dev-tools/package_test.go diff --git a/CHANGELOG.asciidoc b/CHANGELOG.asciidoc index 36e76e6a476..f9003dbd115 100644 --- a/CHANGELOG.asciidoc +++ b/CHANGELOG.asciidoc @@ -61,6 +61,7 @@ https://github.com/elastic/beats/compare/v5.1.1...master[Check the HEAD diff] - The limit for the number of fields is increased via the mapping template. {pull}3275[3275] - Updated to Go 1.7.4. {pull}3277[3277] - Added a NOTICE file containing the notices and licenses of the dependencies. {pull}3334[3334]. +- RPM/deb packages will now install the config file with 0600 permissions. {pull}3382[3382] *Metricbeat* diff --git a/Makefile b/Makefile index e4194460ee8..88828bee935 100644 --- a/Makefile +++ b/Makefile @@ -96,6 +96,8 @@ package: update beats-dashboards mkdir -p build/upload/ $(foreach var,$(BEATS),cp -r $(var)/build/upload/ build/upload/$(var) || exit 1;) cp -r build/dashboards-upload build/upload/dashboards + # Run tests on the generated packages. + go test ./dev-tools/package_test.go -files "${shell pwd}/build/upload/*/*" # Upload nightly builds to S3 .PHONY: upload-nightlies-s3 diff --git a/dev-tools/package_test.go b/dev-tools/package_test.go new file mode 100644 index 00000000000..be4848fe110 --- /dev/null +++ b/dev-tools/package_test.go @@ -0,0 +1,289 @@ +package dev_tools + +// This file contains tests that can be run on the generated packages. +// To run these tests use `go test package_test.go`. + +import ( + "archive/tar" + "archive/zip" + "bytes" + "compress/gzip" + "flag" + "io" + "os" + "path/filepath" + "regexp" + "strings" + "testing" + + "github.com/blakesmith/ar" + "github.com/cavaliercoder/go-rpm" +) + +const ( + expectedConfigMode = os.FileMode(0600) + expectedConfigUID = 0 + expectedConfigGID = 0 +) + +var ( + configFilePattern = regexp.MustCompile(`.*beat\.yml`) +) + +var ( + files = flag.String("files", "../build/upload/*/*", "filepath glob containing package files") +) + +func TestRPM(t *testing.T) { + rpms := getFiles(t, regexp.MustCompile(`\.rpm$`)) + for _, rpm := range rpms { + checkRPM(t, rpm) + } +} + +func TestDeb(t *testing.T) { + debs := getFiles(t, regexp.MustCompile(`\.deb$`)) + buf := new(bytes.Buffer) + for _, deb := range debs { + checkDeb(t, deb, buf) + } +} + +func TestTar(t *testing.T) { + tars := getFiles(t, regexp.MustCompile(`\.tar\.gz$`)) + for _, tar := range tars { + checkTar(t, tar) + } +} + +func TestZip(t *testing.T) { + zips := getFiles(t, regexp.MustCompile(`^\w+beat-\S+.zip$`)) + for _, zip := range zips { + checkZip(t, zip) + } +} + +// Sub-tests + +func checkRPM(t *testing.T, file string) { + p, err := readRPM(file) + if err != nil { + t.Error(err) + return + } + + checkConfigPermissions(t, p) +} + +func checkDeb(t *testing.T, file string, buf *bytes.Buffer) { + p, err := readDeb(file, buf) + if err != nil { + t.Error(err) + return + } + + checkConfigPermissions(t, p) + checkConfigOwner(t, p) +} + +func checkTar(t *testing.T, file string) { + p, err := readTar(file) + if err != nil { + t.Error(err) + return + } + + checkConfigPermissions(t, p) + checkConfigOwner(t, p) +} + +func checkZip(t *testing.T, file string) { + p, err := readZip(file) + if err != nil { + t.Error(err) + return + } + + checkConfigPermissions(t, p) +} + +// Verify that the main configuration file is installed with a 0600 file mode. +func checkConfigPermissions(t *testing.T, p *packageFile) { + t.Run(p.Name+" config file permissions", func(t *testing.T) { + for _, entry := range p.Contents { + if configFilePattern.MatchString(entry.File) { + mode := entry.Mode.Perm() + if expectedConfigMode != mode { + t.Errorf("file %v has wrong permissions: expected=%v actual=%v", + entry.Mode, expectedConfigMode, mode) + } + return + } + } + t.Errorf("no config file found matching %v", configFilePattern) + }) +} + +func checkConfigOwner(t *testing.T, p *packageFile) { + t.Run(p.Name+" config file owner", func(t *testing.T) { + for _, entry := range p.Contents { + if configFilePattern.MatchString(entry.File) { + if expectedConfigUID != entry.UID { + t.Errorf("file %v should be owned by user %v, owner=%v", entry.File, expectedConfigGID, entry.UID) + } + if expectedConfigGID != entry.GID { + t.Errorf("file %v should be owned by group %v, group=%v", entry.File, expectedConfigGID, entry.GID) + } + return + } + } + t.Errorf("no config file found matching %v", configFilePattern) + }) +} + +// Helpers + +type packageFile struct { + Name string + Contents map[string]packageEntry +} + +type packageEntry struct { + File string + UID int + GID int + Mode os.FileMode +} + +func getFiles(t *testing.T, pattern *regexp.Regexp) []string { + matches, err := filepath.Glob(*files) + if err != nil { + t.Fatal(err) + } + + files := matches[:0] + for _, f := range matches { + if pattern.MatchString(filepath.Base(f)) { + files = append(files, f) + } + } + + return files +} + +func readRPM(rpmFile string) (*packageFile, error) { + p, err := rpm.OpenPackageFile(rpmFile) + if err != nil { + return nil, err + } + + contents := p.Files() + pf := &packageFile{Name: filepath.Base(rpmFile), Contents: map[string]packageEntry{}} + + for _, file := range contents { + pf.Contents[file.Name()] = packageEntry{ + File: file.Name(), + Mode: file.Mode(), + } + } + + return pf, nil +} + +// readDeb reads the data.tar.gz file from the .deb. +func readDeb(debFile string, dataBuffer *bytes.Buffer) (*packageFile, error) { + file, err := os.Open(debFile) + if err != nil { + return nil, err + } + defer file.Close() + + arReader := ar.NewReader(file) + for { + header, err := arReader.Next() + if err != nil { + if err == io.EOF { + break + } + return nil, err + } + + if strings.HasPrefix(header.Name, "data.tar.gz") { + dataBuffer.Reset() + _, err := io.Copy(dataBuffer, arReader) + if err != nil { + return nil, err + } + + gz, err := gzip.NewReader(dataBuffer) + if err != nil { + return nil, err + } + defer gz.Close() + + return readTarContents(filepath.Base(debFile), gz) + } + } + + return nil, io.EOF +} + +func readTar(tarFile string) (*packageFile, error) { + file, err := os.Open(tarFile) + if err != nil { + return nil, err + } + defer file.Close() + + var fileReader io.ReadCloser = file + if strings.HasSuffix(tarFile, ".gz") { + if fileReader, err = gzip.NewReader(file); err != nil { + return nil, err + } + defer fileReader.Close() + } + + return readTarContents(filepath.Base(tarFile), fileReader) +} + +func readTarContents(tarName string, data io.Reader) (*packageFile, error) { + tarReader := tar.NewReader(data) + + p := &packageFile{Name: tarName, Contents: map[string]packageEntry{}} + for { + header, err := tarReader.Next() + if err != nil { + if err == io.EOF { + break + } + return nil, err + } + + p.Contents[header.Name] = packageEntry{ + File: header.Name, + UID: header.Uid, + GID: header.Gid, + Mode: os.FileMode(header.Mode), + } + } + + return p, nil +} + +func readZip(zipFile string) (*packageFile, error) { + r, err := zip.OpenReader(zipFile) + if err != nil { + return nil, err + } + defer r.Close() + + p := &packageFile{Name: filepath.Base(zipFile), Contents: map[string]packageEntry{}} + for _, f := range r.File { + p.Contents[f.Name] = packageEntry{ + File: f.Name, + Mode: f.Mode(), + } + } + + return p, nil +} diff --git a/dev-tools/packer/xgo-scripts/before_build.sh b/dev-tools/packer/xgo-scripts/before_build.sh index 70c1d48ba1a..5090cb48834 100755 --- a/dev-tools/packer/xgo-scripts/before_build.sh +++ b/dev-tools/packer/xgo-scripts/before_build.sh @@ -62,14 +62,17 @@ cp $BEAT_NAME.template-es2x.json $PREFIX/$BEAT_NAME.template-es2x.json # linux cp $BEAT_NAME.yml $PREFIX/$BEAT_NAME-linux.yml +chmod 0600 $PREFIX/$BEAT_NAME-linux.yml cp $BEAT_NAME.full.yml $PREFIX/$BEAT_NAME-linux.full.yml # darwin cp $BEAT_NAME.yml $PREFIX/$BEAT_NAME-darwin.yml +chmod 0600 $PREFIX/$BEAT_NAME-darwin.yml cp $BEAT_NAME.full.yml $PREFIX/$BEAT_NAME-darwin.full.yml # win cp $BEAT_NAME.yml $PREFIX/$BEAT_NAME-win.yml +chmod 0600 $PREFIX/$BEAT_NAME-win.yml cp $BEAT_NAME.full.yml $PREFIX/$BEAT_NAME-win.full.yml # Contains beat specific adjustments. As it is platform specific knowledge, it should be in packer not the beats itself