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- // 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/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.
- [[nodiscard]] bool GetRawPublicKey(const crypto::ECPrivateKey& key,
- std::string* public_key);
- // 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.
- [[nodiscard]] bool GetRawPrivateKey(const crypto::ECPrivateKey& key,
- std::string* private_key);
- // 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.
- [[nodiscard]] bool ComputeSharedP256Secret(
- crypto::ECPrivateKey& key,
- const base::StringPiece& peer_public_key,
- std::string* out_shared_secret);
- } // namespace gcm
- #endif // COMPONENTS_GCM_DRIVER_CRYPTO_P256_KEY_UTIL_H_
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