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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_SHA2_H_
- #define CRYPTO_SHA2_H_
- #include <stddef.h>
- #include <array>
- #include <string>
- #include "base/containers/span.h"
- #include "base/strings/string_piece.h"
- #include "crypto/crypto_export.h"
- namespace crypto {
- // These functions perform SHA-256 operations.
- //
- // Functions for SHA-384 and SHA-512 can be added when the need arises.
- static const size_t kSHA256Length = 32; // Length in bytes of a SHA-256 hash.
- // Computes the SHA-256 hash of |input|.
- CRYPTO_EXPORT std::array<uint8_t, kSHA256Length> SHA256Hash(
- base::span<const uint8_t> input);
- // Convenience version of the above that returns the result in a 32-byte
- // string.
- CRYPTO_EXPORT std::string SHA256HashString(base::StringPiece str);
- // Computes the SHA-256 hash of the input string 'str' and stores the first
- // 'len' bytes of the hash in the output buffer 'output'. If 'len' > 32,
- // only 32 bytes (the full hash) are stored in the 'output' buffer.
- CRYPTO_EXPORT void SHA256HashString(base::StringPiece str,
- void* output,
- size_t len);
- } // namespace crypto
- #endif // CRYPTO_SHA2_H_
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