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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CRYPTO_SHA2_H_ | 5 #ifndef CRYPTO_SHA2_H_ |
6 #define CRYPTO_SHA2_H_ | 6 #define CRYPTO_SHA2_H_ |
7 | 7 |
| 8 #include <stddef.h> |
| 9 |
8 #include <string> | 10 #include <string> |
9 | 11 |
10 #include "base/strings/string_piece.h" | 12 #include "base/strings/string_piece.h" |
11 #include "crypto/crypto_export.h" | 13 #include "crypto/crypto_export.h" |
12 | 14 |
13 namespace crypto { | 15 namespace crypto { |
14 | 16 |
15 // These functions perform SHA-256 operations. | 17 // These functions perform SHA-256 operations. |
16 // | 18 // |
17 // Functions for SHA-384 and SHA-512 can be added when the need arises. | 19 // Functions for SHA-384 and SHA-512 can be added when the need arises. |
18 | 20 |
19 static const size_t kSHA256Length = 32; // Length in bytes of a SHA-256 hash. | 21 static const size_t kSHA256Length = 32; // Length in bytes of a SHA-256 hash. |
20 | 22 |
21 // Computes the SHA-256 hash of the input string 'str' and stores the first | 23 // Computes the SHA-256 hash of the input string 'str' and stores the first |
22 // 'len' bytes of the hash in the output buffer 'output'. If 'len' > 32, | 24 // 'len' bytes of the hash in the output buffer 'output'. If 'len' > 32, |
23 // only 32 bytes (the full hash) are stored in the 'output' buffer. | 25 // only 32 bytes (the full hash) are stored in the 'output' buffer. |
24 CRYPTO_EXPORT void SHA256HashString(const base::StringPiece& str, | 26 CRYPTO_EXPORT void SHA256HashString(const base::StringPiece& str, |
25 void* output, size_t len); | 27 void* output, size_t len); |
26 | 28 |
27 // Convenience version of the above that returns the result in a 32-byte | 29 // Convenience version of the above that returns the result in a 32-byte |
28 // string. | 30 // string. |
29 CRYPTO_EXPORT std::string SHA256HashString(const base::StringPiece& str); | 31 CRYPTO_EXPORT std::string SHA256HashString(const base::StringPiece& str); |
30 | 32 |
31 } // namespace crypto | 33 } // namespace crypto |
32 | 34 |
33 #endif // CRYPTO_SHA2_H_ | 35 #endif // CRYPTO_SHA2_H_ |
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