1 // Copyright 2012 The Chromium OS Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef LIBWEAVE_THIRD_PARTY_CHROMIUM_SHA2_H_ 6 #define LIBWEAVE_THIRD_PARTY_CHROMIUM_SHA2_H_ 7 8 #include <string> 9 10 namespace crypto { 11 12 // These functions perform SHA-256 operations. 13 // 14 // Functions for SHA-384 and SHA-512 can be added when the need arises. 15 16 static const size_t kSHA256Length = 32; // Length in bytes of a SHA-256 hash. 17 18 // Computes the SHA-256 hash of the input string 'str' and stores the first 19 // 'len' bytes of the hash in the output buffer 'output'. If 'len' > 32, 20 // only 32 bytes (the full hash) are stored in the 'output' buffer. 21 void SHA256HashString(const std::string& str, uint8_t* output, size_t len); 22 23 // Convenience version of the above that returns the result in a 32-byte 24 // string. 25 std::string SHA256HashString(const std::string& str); 26 27 } // namespace crypto 28 29 #endif // LIBWEAVE_THIRD_PARTY_CHROMIUM_SHA2_H_ 30
