tests, secp256k1: secp256k1 fuzzer implementation

go.mod

@@ -36,9 +36,9 @@ require (
 	github.com/json-iterator/go v1.1.12
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/kevinburke/go-bindata v3.21.0+incompatible
-	github.com/ledgerwatch/erigon-lib v0.0.0-20211104042003-182de9f4806b
+	github.com/ledgerwatch/erigon-lib v0.0.0-20211104110507-597d0fbb01ab
 	github.com/ledgerwatch/log/v3 v3.4.0
-	github.com/ledgerwatch/secp256k1 v0.0.0-20210626115225-cd5cd00ed72d
+	github.com/ledgerwatch/secp256k1 v1.0.0
 	github.com/logrusorgru/aurora/v3 v3.0.0
 	github.com/pelletier/go-toml v1.9.4
 	github.com/quasilyte/go-ruleguard/dsl v0.3.6

go.sum

@@ -497,12 +497,12 @@ github.com/kylelemons/godebug v0.0.0-20170224010052-a616ab194758 h1:0D5M2HQSGD3P
 github.com/kylelemons/godebug v0.0.0-20170224010052-a616ab194758/go.mod h1:B69LEHPfb2qLo0BaaOLcbitczOKLWTsrBG9LczfCD4k=
 github.com/leanovate/gopter v0.2.9 h1:fQjYxZaynp97ozCzfOyOuAGOU4aU/z37zf/tOujFk7c=
 github.com/leanovate/gopter v0.2.9/go.mod h1:U2L/78B+KVFIx2VmW6onHJQzXtFb+p5y3y2Sh+Jxxv8=
-github.com/ledgerwatch/erigon-lib v0.0.0-20211104042003-182de9f4806b h1:pDZXCHYa0XyYAgk+/TFJuzpeoU9YlOZBzZYCEne+sKc=
-github.com/ledgerwatch/erigon-lib v0.0.0-20211104042003-182de9f4806b/go.mod h1:yqHdCAcVTYLxBeWQoqEd0r9znvew3MMHPeDgv2wgAxA=
+github.com/ledgerwatch/erigon-lib v0.0.0-20211104110507-597d0fbb01ab h1:CNIgX4Sw1uybwmLgLmWpAaNrm4ADo33BLpz4Zo3FnqI=
+github.com/ledgerwatch/erigon-lib v0.0.0-20211104110507-597d0fbb01ab/go.mod h1:CuEZROm43MykZT5CjCj02jw0FOwaDl8Nh+PZkTEGopg=
 github.com/ledgerwatch/log/v3 v3.4.0 h1:SEIOcv5a2zkG3PmoT5jeTU9m/0nEUv0BJS5bzsjwKCI=
 github.com/ledgerwatch/log/v3 v3.4.0/go.mod h1:VXcz6Ssn6XEeU92dCMc39/g1F0OYAjw1Mt+dGP5DjXY=
-github.com/ledgerwatch/secp256k1 v0.0.0-20210626115225-cd5cd00ed72d h1:/IKMrJdfRsoYNc36PXqP4xMH3vhW/8IQyBKGQbKZUno=
-github.com/ledgerwatch/secp256k1 v0.0.0-20210626115225-cd5cd00ed72d/go.mod h1:SPmqJFciiF/Q0mPt2jVs2dTr/1TZBTIA+kPMmKgBAak=
+github.com/ledgerwatch/secp256k1 v1.0.0 h1:Usvz87YoTG0uePIV8woOof5cQnLXGYa162rFf3YnwaQ=
+github.com/ledgerwatch/secp256k1 v1.0.0/go.mod h1:SPmqJFciiF/Q0mPt2jVs2dTr/1TZBTIA+kPMmKgBAak=
 github.com/leodido/go-urn v1.1.0/go.mod h1:+cyI34gQWZcE1eQU7NVgKkkzdXDQHr1dBMtdAPozLkw=
 github.com/logrusorgru/aurora/v3 v3.0.0 h1:R6zcoZZbvVcGMvDCKo45A9U/lzYyzl5NfYIvznmDfE4=
 github.com/logrusorgru/aurora/v3 v3.0.0/go.mod h1:vsR12bk5grlLvLXAYrBsb5Oc/N+LxAlxggSjiwMnCUc=

oss-fuzz.sh

@@ -101,6 +101,7 @@ compile_fuzzer tests/fuzzers/stacktrie  Fuzz fuzzStackTrie
 compile_fuzzer tests/fuzzers/difficulty Fuzz fuzzDifficulty
 compile_fuzzer tests/fuzzers/abi        Fuzz fuzzAbi
 compile_fuzzer tests/fuzzers/les        Fuzz fuzzLes
+compile_fuzzer tests/fuzzers/secp256k1  Fuzz fuzzSecp256k1
 
 compile_fuzzer tests/fuzzers/bls12381  FuzzG1Add fuzz_g1_add
 compile_fuzzer tests/fuzzers/bls12381  FuzzG1Mul fuzz_g1_mul

tests/fuzzers/secp256k1/secp_fuzzer.go

@@ -0,0 +1,50 @@
+// Copyright 2021 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// build +gofuzz
+
+package secp256k1
+
+import (
+	"fmt"
+
+	"github.com/btcsuite/btcd/btcec"
+	fuzz "github.com/google/gofuzz"
+	"github.com/ledgerwatch/secp256k1"
+)
+
+func Fuzz(input []byte) int {
+	var (
+		fuzzer = fuzz.NewFromGoFuzz(input)
+		curveA = secp256k1.S256()
+		curveB = btcec.S256()
+		dataP1 []byte
+		dataP2 []byte
+	)
+	// first point
+	fuzzer.Fuzz(&dataP1)
+	x1, y1 := curveB.ScalarBaseMult(dataP1)
+	// second point
+	fuzzer.Fuzz(&dataP2)
+	x2, y2 := curveB.ScalarBaseMult(dataP2)
+	resAX, resAY := curveA.Add(x1, y1, x2, y2)
+	resBX, resBY := curveB.Add(x1, y1, x2, y2)
+	if resAX.Cmp(resBX) != 0 || resAY.Cmp(resBY) != 0 {
+		fmt.Printf("%s %s %s %s\n", x1, y1, x2, y2)
+		panic(fmt.Sprintf("Addition failed: erigon: %s %s btcd: %s %s", resAX, resAY, resBX, resBY))
+	}
+	return 0
+}

tests/fuzzers/secp256k1/secp_test.go

@@ -0,0 +1,8 @@
+package secp256k1
+
+import "testing"
+
+func TestFuzzer(t *testing.T) {
+	test := "00000000N0000000/R00000000000000000U0000S0000000mkhP000000000000000U"
+	Fuzz([]byte(test))
+}