| // Copyright 2015 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 COMPONENTS_GCM_DRIVER_CRYPTO_P256_KEY_UTIL_H_ |
| #define COMPONENTS_GCM_DRIVER_CRYPTO_P256_KEY_UTIL_H_ |
| |
| #include <string> |
| |
| #include "base/compiler_specific.h" |
| #include "base/strings/string_piece.h" |
| |
| namespace crypto { |
| class ECPrivateKey; |
| } |
| |
| namespace gcm { |
| |
| // Writes the public key associated with the |key| to |*public_key| in |
| // uncompressed point format. That is, a 65-octet sequence that starts with a |
| // 0x04 octet. Returns whether the public key could be extracted successfully. |
| bool GetRawPublicKey(const crypto::ECPrivateKey& key, |
| std::string* public_key) WARN_UNUSED_RESULT; |
| |
| // Writes the private key associated with the |key| to |*private_key| as a PKCS |
| // #8 PrivateKeyInfo block. Returns whether the private key could be extracted |
| // successfully. |
| bool GetRawPrivateKey(const crypto::ECPrivateKey& key, |
| std::string* private_key) WARN_UNUSED_RESULT; |
| |
| // Computes the shared secret between |key| and |peer_public_key|.The |
| // |peer_public_key| must be an octet string in uncompressed form per |
| // SEC1 2.3.3. |
| // |
| // Returns whether the secret could be computed, and was written to the out |
| // argument. |
| bool ComputeSharedP256Secret(crypto::ECPrivateKey& key, |
| const base::StringPiece& peer_public_key, |
| std::string* out_shared_secret) WARN_UNUSED_RESULT; |
| |
| } // namespace gcm |
| |
| #endif // COMPONENTS_GCM_DRIVER_CRYPTO_P256_KEY_UTIL_H_ |