1 // Copyright 2012 The Chromium Authors
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
12 #include <string_view>
14 #include "base/containers/span.h"
15 #include "crypto/crypto_export.h"
19 // These functions perform SHA-256 operations.
21 // Functions for SHA-384 and SHA-512 can be added when the need arises.
23 static const size_t kSHA256Length = 32; // Length in bytes of a SHA-256 hash.
25 // Computes the SHA-256 hash of |input|.
26 CRYPTO_EXPORT std::array<uint8_t, kSHA256Length> SHA256Hash(
27 base::span<const uint8_t> input);
29 // Convenience version of the above that returns the result in a 32-byte
31 CRYPTO_EXPORT std::string SHA256HashString(std::string_view str);
33 // Computes the SHA-256 hash of the input string 'str' and stores the first
34 // 'len' bytes of the hash in the output buffer 'output'. If 'len' > 32,
35 // only 32 bytes (the full hash) are stored in the 'output' buffer.
36 CRYPTO_EXPORT void SHA256HashString(std::string_view str,
42 #endif // CRYPTO_SHA2_H_