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-rw-r--r--crypto/ec_signature_creator.h66
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diff --git a/crypto/ec_signature_creator.h b/crypto/ec_signature_creator.h
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-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CRYPTO_EC_SIGNATURE_CREATOR_H_
-#define CRYPTO_EC_SIGNATURE_CREATOR_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "crypto/crypto_export.h"
-
-namespace crypto {
-
-class ECPrivateKey;
-class ECSignatureCreator;
-
-class CRYPTO_EXPORT ECSignatureCreatorFactory {
- public:
- virtual ~ECSignatureCreatorFactory() {}
-
- virtual ECSignatureCreator* Create(ECPrivateKey* key) = 0;
-};
-
-// Signs data using a bare private key (as opposed to a full certificate).
-// We need this class because SignatureCreator is hardcoded to use
-// RSAPrivateKey.
-class CRYPTO_EXPORT ECSignatureCreator {
- public:
- virtual ~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 SHA256. Ideally, we should
- // pass in the hash algorithm identifier.
- static ECSignatureCreator* Create(ECPrivateKey* key);
-
- // Set a factory to make the Create function return non-standard
- // ECSignatureCreator objects. Because the ECDSA algorithm involves
- // randomness, this is useful for higher-level tests that want to have
- // deterministic mocked output to compare.
- static void SetFactoryForTesting(ECSignatureCreatorFactory* factory);
-
- // Signs |data_len| bytes from |data| and writes the results into
- // |signature| as a DER encoded ECDSA-Sig-Value from RFC 3279.
- //
- // ECDSA-Sig-Value ::= SEQUENCE {
- // r INTEGER,
- // s INTEGER }
- 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
-
-#endif // CRYPTO_EC_SIGNATURE_CREATOR_H_