| /* |
| * Copyright (C) 2011 Google Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef WTF_SHA1_h |
| #define WTF_SHA1_h |
| |
| #include <wtf/Vector.h> |
| #include <wtf/text/CString.h> |
| |
| namespace WTF { |
| |
| class SHA1 { |
| public: |
| WTF_EXPORT_PRIVATE SHA1(); |
| |
| void addBytes(const Vector<uint8_t>& input) |
| { |
| addBytes(input.data(), input.size()); |
| } |
| void addBytes(const CString& input) |
| { |
| const char* string = input.data(); |
| // Make sure that the creator of the CString didn't make the mistake |
| // of forcing length() to be the size of the buffer used to create the |
| // string, prior to inserting the null terminator earlier in the |
| // sequence. |
| ASSERT(input.length() == strlen(string)); |
| addBytes(reinterpret_cast<const uint8_t*>(string), input.length()); |
| } |
| WTF_EXPORT_PRIVATE void addBytes(const uint8_t* input, size_t length); |
| |
| // computeHash has a side effect of resetting the state of the object. |
| WTF_EXPORT_PRIVATE void computeHash(Vector<uint8_t, 20>&); |
| |
| // Get a hex hash from the digest. Pass a limit less than 40 if you want a shorter digest. |
| WTF_EXPORT_PRIVATE static CString hexDigest(const Vector<uint8_t, 20>&); |
| |
| // Compute the hex digest directly. Pass a limit less than 40 if you want a shorter digest. |
| WTF_EXPORT_PRIVATE CString computeHexDigest(); |
| |
| private: |
| void finalize(); |
| void processBlock(); |
| void reset(); |
| |
| uint8_t m_buffer[64]; |
| size_t m_cursor; // Number of bytes filled in m_buffer (0-64). |
| uint64_t m_totalBytes; // Number of bytes added so far. |
| uint32_t m_hash[5]; |
| }; |
| |
| } // namespace WTF |
| |
| using WTF::SHA1; |
| |
| #endif // WTF_SHA1_h |