diff options
Diffstat (limited to 'crypto/ec_signature_creator.h')
| -rw-r--r-- | crypto/ec_signature_creator.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/crypto/ec_signature_creator.h b/crypto/ec_signature_creator.h index b557daa..16e64f5 100644 --- a/crypto/ec_signature_creator.h +++ b/crypto/ec_signature_creator.h @@ -5,6 +5,7 @@ #ifndef CRYPTO_EC_SIGNATURE_CREATOR_H_ #define CRYPTO_EC_SIGNATURE_CREATOR_H_ +#include <string> #include <vector> #include "base/basictypes.h" @@ -31,7 +32,7 @@ class CRYPTO_EXPORT ECSignatureCreator { // Create an instance. The caller must ensure that the provided PrivateKey // instance outlives the created ECSignatureCreator. - // TODO(rch): This is currently hard coded to use SHA1. Ideally, we should + // TODO(rch): This is currently hard coded to use SHA256. Ideally, we should // pass in the hash algorithm identifier. static ECSignatureCreator* Create(ECPrivateKey* key); @@ -50,6 +51,14 @@ class CRYPTO_EXPORT ECSignatureCreator { virtual bool Sign(const uint8* data, int data_len, std::vector<uint8>* signature) = 0; + + // DecodeSignature converts from a DER encoded ECDSA-Sig-Value (as produced + // by Sign) to a `raw' ECDSA signature which consists of a pair of + // big-endian, zero-padded, 256-bit integers, r and s. On success it returns + // true and puts the raw signature into |out_raw_sig|. + // (Only P-256 signatures are supported.) + virtual bool DecodeSignature(const std::vector<uint8>& signature, + std::vector<uint8>* out_raw_sig) = 0; }; } // namespace crypto |