1 /* 2 * Copyright (C) 2011 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef WTF_SHA1_h 32 #define WTF_SHA1_h 33 34 #include <wtf/Vector.h> 35 36 namespace WTF { 37 38 class SHA1 { 39 public: 40 SHA1(); 41 42 void addBytes(const Vector<uint8_t>& input) 43 { 44 addBytes(input.data(), input.size()); 45 } 46 void addBytes(const uint8_t* input, size_t length); 47 48 // computeHash has a side effect of resetting the state of the object. 49 void computeHash(Vector<uint8_t, 20>&); 50 51 private: 52 void finalize(); 53 void processBlock(); 54 void reset(); 55 56 uint8_t m_buffer[64]; 57 size_t m_cursor; // Number of bytes filled in m_buffer (0-64). 58 uint64_t m_totalBytes; // Number of bytes added so far. 59 uint32_t m_hash[5]; 60 }; 61 62 } // namespace WTF 63 64 using WTF::SHA1; 65 66 #endif // WTF_SHA1_h 67
