Reland "Cut down /crypto and switch what is left of it to boringssl".

crypto/ec_signature_creator.h

-// 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_