63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Generic MD5 hashing algo
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//
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//=============================================================================//
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#ifndef CHECKSUM_MD5_H
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#define CHECKSUM_MD5_H
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#ifdef _WIN32
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#pragma once
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#endif
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// 16 bytes == 128 bit digest
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#define MD5_DIGEST_LENGTH 16
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#define MD5_BIT_LENGTH ( MD5_DIGEST_LENGTH * sizeof(unsigned char) )
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struct MD5Value_t
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{
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unsigned char bits[MD5_DIGEST_LENGTH];
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void Zero();
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bool IsZero() const;
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bool operator==( const MD5Value_t &src ) const;
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bool operator!=( const MD5Value_t &src ) const;
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};
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// MD5 Hash
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typedef struct
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{
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unsigned int buf[4];
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unsigned int bits[2];
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unsigned char in[64];
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} MD5Context_t;
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void MD5Init( MD5Context_t *context );
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void MD5Update( MD5Context_t *context, unsigned char const *buf, unsigned int len );
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void MD5Final( unsigned char digest[ MD5_DIGEST_LENGTH ], MD5Context_t *context );
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char *MD5_Print(unsigned char *digest, int hashlen );
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/// Convenience wrapper to calculate the MD5 for a buffer, all in one step, without
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/// bothering with the context object.
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void MD5_ProcessSingleBuffer( const void *p, int len, MD5Value_t &md5Result );
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unsigned int MD5_PseudoRandom(unsigned int nSeed);
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/// Returns true if the values match.
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bool MD5_Compare( const MD5Value_t &data, const MD5Value_t &compare );
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inline bool MD5Value_t::operator==( const MD5Value_t &src ) const
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{
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return MD5_Compare( *this, src );
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}
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inline bool MD5Value_t::operator!=( const MD5Value_t &src ) const
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{
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return !MD5_Compare( *this, src );
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}
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#endif // CHECKSUM_MD5_H
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