| // Copyright 2012 The Chromium Authors |
| // 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_ |