99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
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/*
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Copyright (c) 2006-2009 by Jakob Schroeter <js@camaya.net>
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This file is part of the gloox library. http://camaya.net/gloox
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This software is distributed under a license. The full license
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agreement can be found in the file LICENSE in this distribution.
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This software may not be copied, modified, sold or distributed
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other than expressed in the named license agreement.
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This software is distributed without any warranty.
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*/
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#ifndef SHA_H__
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#define SHA_H__
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#include "macros.h"
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#include <string>
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namespace gloox
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{
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/**
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* @brief An implementation of SHA1.
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*
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* @author Jakob Schroeter <js@camaya.net>
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* @since 0.9
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*/
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class GLOOX_API SHA
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{
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public:
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/**
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* Constructs a new SHA object.
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*/
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SHA();
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/**
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* Virtual Destructor.
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*/
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virtual ~SHA();
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/**
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* Resets the internal state.
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*/
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void reset();
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/**
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* Finalizes the hash computation.
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*/
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void finalize();
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/**
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* Returns the message digest in hex notation. Finalizes the hash if finalize()
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* has not been called before.
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* @return The message digest.
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*/
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const std::string hex();
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/**
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* Returns the raw binary message digest. Finalizes the hash if finalize()
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* has not been called before.
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* @return The message raw binary digest.
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*/
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const std::string binary();
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/**
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* Provide input to SHA1.
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* @param data The data to compute the digest of.
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* @param length The size of the data in bytes.
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*/
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void feed( const unsigned char* data, unsigned length );
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/**
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* Provide input to SHA1.
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* @param data The data to compute the digest of.
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*/
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void feed( const std::string& data );
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private:
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void process();
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void pad();
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inline unsigned shift( int bits, unsigned word );
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void init();
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unsigned H[5];
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unsigned Length_Low;
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unsigned Length_High;
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unsigned char Message_Block[64];
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int Message_Block_Index;
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bool m_finished;
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bool m_corrupted;
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};
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}
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#endif // SHA_H__
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