Index: crypto/ec_signature_creator.h |
diff --git a/crypto/ec_signature_creator.h b/crypto/ec_signature_creator.h |
index b557daaf7b0193d8708fd705e77475572251f823..16e64f5753cb85a4506a8e117dc7281d678d004e 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 |