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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <string> | 9 #include <string> |
10 | 10 |
| 11 #include "crypto/crypto_api.h" |
| 12 |
11 namespace crypto { | 13 namespace crypto { |
12 | 14 |
13 // These functions perform SHA-256 operations. | 15 // These functions perform SHA-256 operations. |
14 // | 16 // |
15 // Functions for SHA-384 and SHA-512 can be added when the need arises. | 17 // Functions for SHA-384 and SHA-512 can be added when the need arises. |
16 | 18 |
17 enum { | 19 enum { |
18 SHA256_LENGTH = 32 // length in bytes of a SHA-256 hash | 20 SHA256_LENGTH = 32 // length in bytes of a SHA-256 hash |
19 }; | 21 }; |
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 void SHA256HashString(const std::string& str, | 26 CRYPTO_API void SHA256HashString(const std::string& 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 std::string SHA256HashString(const std::string& str); | 31 CRYPTO_API std::string SHA256HashString(const std::string& 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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