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Merge pull request #311 from trail-of-forks/jl/verify
verify: init
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| use std::fmt::Display; | ||
| use std::str::FromStr; | ||
|
|
||
| use base64::{engine::general_purpose::STANDARD as base64, Engine as _}; | ||
| use json_syntax::Print; | ||
|
|
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| use sigstore_protobuf_specs::dev::sigstore::{ | ||
| common::v1::LogId, | ||
| rekor::v1::{Checkpoint, InclusionPromise, InclusionProof, KindVersion, TransparencyLogEntry}, | ||
| }; | ||
|
|
||
| use crate::rekor::models::{ | ||
| log_entry::InclusionProof as RekorInclusionProof, LogEntry as RekorLogEntry, | ||
| }; | ||
|
|
||
| // Known Sigstore bundle media types. | ||
| #[derive(Clone, Copy, Debug)] | ||
| pub enum Version { | ||
| Bundle0_1, | ||
| Bundle0_2, | ||
| } | ||
|
|
||
| impl Display for Version { | ||
| fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { | ||
| f.write_str(match &self { | ||
| Version::Bundle0_1 => "application/vnd.dev.sigstore.bundle+json;version=0.1", | ||
| Version::Bundle0_2 => "application/vnd.dev.sigstore.bundle+json;version=0.2", | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| impl FromStr for Version { | ||
| type Err = (); | ||
|
|
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| fn from_str(s: &str) -> Result<Self, Self::Err> { | ||
| match s { | ||
| "application/vnd.dev.sigstore.bundle+json;version=0.1" => Ok(Version::Bundle0_1), | ||
| "application/vnd.dev.sigstore.bundle+json;version=0.2" => Ok(Version::Bundle0_2), | ||
| _ => Err(()), | ||
| } | ||
| } | ||
| } | ||
|
|
||
| #[inline] | ||
| fn decode_hex<S: AsRef<str>>(hex: S) -> Result<Vec<u8>, ()> { | ||
| hex::decode(hex.as_ref()).or(Err(())) | ||
| } | ||
|
|
||
| impl TryFrom<RekorInclusionProof> for InclusionProof { | ||
| type Error = (); | ||
|
|
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| fn try_from(value: RekorInclusionProof) -> Result<Self, Self::Error> { | ||
| let hashes = value | ||
| .hashes | ||
| .iter() | ||
| .map(decode_hex) | ||
| .collect::<Result<Vec<_>, _>>()?; | ||
|
|
||
| Ok(InclusionProof { | ||
| checkpoint: Some(Checkpoint { | ||
| envelope: value.checkpoint, | ||
| }), | ||
| hashes, | ||
| log_index: value.log_index, | ||
| root_hash: decode_hex(value.root_hash)?, | ||
| tree_size: value.tree_size, | ||
| }) | ||
| } | ||
| } | ||
|
|
||
| /// Convert log entries returned from Rekor into Sigstore Bundle format entries. | ||
| impl TryFrom<RekorLogEntry> for TransparencyLogEntry { | ||
| type Error = (); | ||
|
|
||
| fn try_from(value: RekorLogEntry) -> Result<Self, Self::Error> { | ||
| let canonicalized_body = { | ||
| let mut body = json_syntax::to_value(value.body).or(Err(()))?; | ||
| body.canonicalize(); | ||
| body.compact_print().to_string().into_bytes() | ||
| }; | ||
| let inclusion_promise = Some(InclusionPromise { | ||
| signed_entry_timestamp: base64 | ||
| .decode(value.verification.signed_entry_timestamp) | ||
| .or(Err(()))?, | ||
| }); | ||
| let inclusion_proof = value | ||
| .verification | ||
| .inclusion_proof | ||
| .map(|p| p.try_into()) | ||
| .transpose()?; | ||
|
|
||
| Ok(TransparencyLogEntry { | ||
| canonicalized_body, | ||
| inclusion_promise, | ||
| inclusion_proof, | ||
| integrated_time: value.integrated_time, | ||
| kind_version: Some(KindVersion { | ||
| kind: "hashedrekord".to_owned(), | ||
| version: "0.0.1".to_owned(), | ||
| }), | ||
| log_id: Some(LogId { | ||
| key_id: decode_hex(value.log_i_d)?, | ||
| }), | ||
| log_index: value.log_index, | ||
| }) | ||
| } | ||
| } |
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