54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Copyright (C) 2012, Peter Hatina <phatina@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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* ***** END LICENSE BLOCK ***** */
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#ifndef SHA1_HEADER
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#define SHA1_HEADER
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#include <iostream>
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#include <string>
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class SHA1
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{
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public:
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SHA1();
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void update(const std::string &s);
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void update(std::istream &is);
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std::string final();
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static std::string sumString(const std::string &str);
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private:
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typedef unsigned long int uint32; /* just needs to be at least 32bit */
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typedef unsigned long long uint64; /* just needs to be at least 64bit */
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static const unsigned int DIGEST_INTS = 5; /* number of 32bit integers per SHA1 digest */
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static const unsigned int BLOCK_INTS = 16; /* number of 32bit integers per SHA1 block */
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static const unsigned int BLOCK_BYTES = BLOCK_INTS * 4;
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uint32 m_digest[DIGEST_INTS];
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std::string m_buffer;
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uint64 m_transforms;
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void reset();
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void transform(uint32 block[BLOCK_BYTES]);
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static void buffer_to_block(const std::string &buffer, uint32 block[BLOCK_BYTES]);
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static void read(std::istream &is, std::string &s, const int max);
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};
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#endif
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