70 lines
2.2 KiB
C++
70 lines
2.2 KiB
C++
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/*
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Copyright (c) 2003, Arvid Norberg
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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* Neither the name of the author nor the names of its
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef TORRENT_HASHER_HPP_INCLUDED
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#define TORRENT_HASHER_HPP_INCLUDED
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extern "C"
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{
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typedef struct {
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unsigned int state[5];
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unsigned int count[2];
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unsigned char buffer[64];
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} SHA1_CTX;
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void SHA1Init(SHA1_CTX* context);
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void SHA1Update(SHA1_CTX* context, unsigned char* data, unsigned int len);
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void SHA1Final(unsigned char* digest, SHA1_CTX* context);
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}
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namespace libtorrent
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{
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class hasher
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{
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public:
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hasher() { SHA1Init(&m_context); }
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void update(const char* data, unsigned int len)
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{ SHA1Update(&m_context, reinterpret_cast<unsigned char*>(const_cast<char*>(data)), len); }
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void final(sha1_hash& digest) { SHA1Final(digest.begin(), &m_context); }
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private:
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SHA1_CTX m_context;
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};
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}
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#endif // TORRENT_HASHER_HPP_INCLUDED
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