/*
* 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/WTFExport.h"
#include "wtf/text/CString.h"
namespace WTF {
class WTF_EXPORT SHA1 {
public:
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());
}
void addBytes(const uint8_t* input, size_t length);
static const size_t outputSizeBytes = 20;
// computeHash has a side effect of resetting the state of the object.
void computeHash(Vector<uint8_t, outputSizeBytes>&);
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