refactor-md5-code.patch
Signed-off-by: Andy Green <andy@warmcat.com>
This commit is contained in:
Andy Green
parent
7c212ccf3c
commit
40a3a02190
1 changed files with 164 additions and 272 deletions
436
lib/md5.c
436
lib/md5.c
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@ -1,8 +1,7 @@
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/*
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* Originally from Polarssl here
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* Modified from Polarssl here
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* http://polarssl.org/show_source?file=md5
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* under GPL2 or later
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* truncated to remove hmac support
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*/
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@ -10,59 +9,12 @@
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#include <stdio.h>
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typedef struct
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struct md5_context
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{
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unsigned long total[2]; /*!< number of bytes processed */
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unsigned long state[4]; /*!< intermediate digest state */
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unsigned char buffer[64]; /*!< data block being processed */
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}
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md5_context;
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/**
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* \brief MD5 context setup
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*
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* \param ctx context to be initialized
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*/
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void md5_starts( md5_context *ctx );
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/**
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* \brief MD5 process buffer
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*
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* \param ctx MD5 context
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* \param input buffer holding the data
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* \param ilen length of the input data
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*/
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void md5_update( md5_context *ctx, const unsigned char *input, int ilen );
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/**
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* \brief MD5 final digest
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*
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* \param ctx MD5 context
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* \param output MD5 checksum result
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*/
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void md5_finish( md5_context *ctx, unsigned char output[16] );
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/**
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* \brief Output = MD5( input buffer )
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*
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* \param input buffer holding the data
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* \param ilen length of the input data
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* \param output MD5 checksum result
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*/
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void md5( const unsigned char *input, int ilen, unsigned char output[16] );
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/**
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* \brief Output = MD5( file contents )
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*
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* \param path input file name
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* \param output MD5 checksum result
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*
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* \return 0 if successful, 1 if fopen failed,
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* or 2 if fread failed
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*/
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int md5_file( const char *path, unsigned char output[16] );
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unsigned long total[2];
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unsigned long state[4];
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unsigned char buffer[64];
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};
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/*
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@ -71,57 +23,44 @@ int md5_file( const char *path, unsigned char output[16] );
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#ifndef GET_ULONG_LE
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#define GET_ULONG_LE(n,b,i) \
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{ \
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(n) = ( (unsigned long) (b)[(i) ] ) \
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| ( (unsigned long) (b)[(i) + 1] << 8 ) \
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| ( (unsigned long) (b)[(i) + 2] << 16 ) \
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| ( (unsigned long) (b)[(i) + 3] << 24 ); \
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(n) = ( (unsigned long) (b)[i]) \
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| ( (unsigned long) (b)[(i) + 1] << 8 ) \
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| ( (unsigned long) (b)[(i) + 2] << 16 ) \
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| ( (unsigned long) (b)[(i) + 3] << 24 ); \
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}
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#endif
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#ifndef PUT_ULONG_LE
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#define PUT_ULONG_LE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( (n) ); \
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(b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \
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(b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \
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(b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \
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}
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#define PUT_ULONG_LE(n,b,i) \
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{ \
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(b)[(i) ] = (unsigned char) ( (n) ); \
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(b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \
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(b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \
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(b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \
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}
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#endif
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/*
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* MD5 context setup
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*/
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void md5_starts( md5_context *ctx )
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{
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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ctx->state[0] = 0x67452301;
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ctx->state[1] = 0xEFCDAB89;
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ctx->state[2] = 0x98BADCFE;
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ctx->state[3] = 0x10325476;
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}
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static void md5_process( md5_context *ctx, const unsigned char data[64] )
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static void md5_process(struct md5_context *ctx, const unsigned char data[64] )
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{
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unsigned long X[16], A, B, C, D;
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GET_ULONG_LE( X[ 0], data, 0 );
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GET_ULONG_LE( X[ 1], data, 4 );
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GET_ULONG_LE( X[ 2], data, 8 );
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GET_ULONG_LE( X[ 3], data, 12 );
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GET_ULONG_LE( X[ 4], data, 16 );
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GET_ULONG_LE( X[ 5], data, 20 );
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GET_ULONG_LE( X[ 6], data, 24 );
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GET_ULONG_LE( X[ 7], data, 28 );
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GET_ULONG_LE( X[ 8], data, 32 );
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GET_ULONG_LE( X[ 9], data, 36 );
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GET_ULONG_LE( X[10], data, 40 );
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GET_ULONG_LE( X[11], data, 44 );
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GET_ULONG_LE( X[12], data, 48 );
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GET_ULONG_LE( X[13], data, 52 );
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GET_ULONG_LE( X[14], data, 56 );
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GET_ULONG_LE( X[15], data, 60 );
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GET_ULONG_LE(X[0], data, 0);
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GET_ULONG_LE(X[1], data, 4);
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GET_ULONG_LE(X[2], data, 8);
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GET_ULONG_LE(X[3], data, 12);
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GET_ULONG_LE(X[4], data, 16);
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GET_ULONG_LE(X[5], data, 20);
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GET_ULONG_LE(X[6], data, 24);
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GET_ULONG_LE(X[7], data, 28);
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GET_ULONG_LE(X[8], data, 32);
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GET_ULONG_LE(X[9], data, 36);
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GET_ULONG_LE(X[10], data, 40);
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GET_ULONG_LE(X[11], data, 44);
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GET_ULONG_LE(X[12], data, 48);
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GET_ULONG_LE(X[13], data, 52);
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GET_ULONG_LE(X[14], data, 56);
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GET_ULONG_LE(X[15], data, 60);
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#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))
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@ -130,224 +69,177 @@ static void md5_process( md5_context *ctx, const unsigned char data[64] )
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a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \
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}
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A = ctx->state[0];
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B = ctx->state[1];
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C = ctx->state[2];
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D = ctx->state[3];
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A = ctx->state[0];
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B = ctx->state[1];
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C = ctx->state[2];
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D = ctx->state[3];
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#define F(x,y,z) (z ^ (x & (y ^ z)))
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P( A, B, C, D, 0, 7, 0xD76AA478 );
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P( D, A, B, C, 1, 12, 0xE8C7B756 );
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P( C, D, A, B, 2, 17, 0x242070DB );
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P( B, C, D, A, 3, 22, 0xC1BDCEEE );
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P( A, B, C, D, 4, 7, 0xF57C0FAF );
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P( D, A, B, C, 5, 12, 0x4787C62A );
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P( C, D, A, B, 6, 17, 0xA8304613 );
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P( B, C, D, A, 7, 22, 0xFD469501 );
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P( A, B, C, D, 8, 7, 0x698098D8 );
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P( D, A, B, C, 9, 12, 0x8B44F7AF );
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P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
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P( B, C, D, A, 11, 22, 0x895CD7BE );
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P( A, B, C, D, 12, 7, 0x6B901122 );
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P( D, A, B, C, 13, 12, 0xFD987193 );
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P( C, D, A, B, 14, 17, 0xA679438E );
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P( B, C, D, A, 15, 22, 0x49B40821 );
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P( A, B, C, D, 0, 7, 0xD76AA478 );
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P( D, A, B, C, 1, 12, 0xE8C7B756 );
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P( C, D, A, B, 2, 17, 0x242070DB );
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P( B, C, D, A, 3, 22, 0xC1BDCEEE );
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P( A, B, C, D, 4, 7, 0xF57C0FAF );
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P( D, A, B, C, 5, 12, 0x4787C62A );
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P( C, D, A, B, 6, 17, 0xA8304613 );
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P( B, C, D, A, 7, 22, 0xFD469501 );
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P( A, B, C, D, 8, 7, 0x698098D8 );
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P( D, A, B, C, 9, 12, 0x8B44F7AF );
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P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
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P( B, C, D, A, 11, 22, 0x895CD7BE );
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P( A, B, C, D, 12, 7, 0x6B901122 );
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P( D, A, B, C, 13, 12, 0xFD987193 );
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P( C, D, A, B, 14, 17, 0xA679438E );
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P( B, C, D, A, 15, 22, 0x49B40821 );
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#undef F
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#define F(x,y,z) (y ^ (z & (x ^ y)))
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P( A, B, C, D, 1, 5, 0xF61E2562 );
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P( D, A, B, C, 6, 9, 0xC040B340 );
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P( C, D, A, B, 11, 14, 0x265E5A51 );
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P( B, C, D, A, 0, 20, 0xE9B6C7AA );
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P( A, B, C, D, 5, 5, 0xD62F105D );
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P( D, A, B, C, 10, 9, 0x02441453 );
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P( C, D, A, B, 15, 14, 0xD8A1E681 );
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P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
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P( A, B, C, D, 9, 5, 0x21E1CDE6 );
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P( D, A, B, C, 14, 9, 0xC33707D6 );
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P( C, D, A, B, 3, 14, 0xF4D50D87 );
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P( B, C, D, A, 8, 20, 0x455A14ED );
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P( A, B, C, D, 13, 5, 0xA9E3E905 );
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P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
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P( C, D, A, B, 7, 14, 0x676F02D9 );
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P( B, C, D, A, 12, 20, 0x8D2A4C8A );
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P( A, B, C, D, 1, 5, 0xF61E2562 );
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P( D, A, B, C, 6, 9, 0xC040B340 );
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P( C, D, A, B, 11, 14, 0x265E5A51 );
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P( B, C, D, A, 0, 20, 0xE9B6C7AA );
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P( A, B, C, D, 5, 5, 0xD62F105D );
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P( D, A, B, C, 10, 9, 0x02441453 );
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P( C, D, A, B, 15, 14, 0xD8A1E681 );
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P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
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P( A, B, C, D, 9, 5, 0x21E1CDE6 );
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P( D, A, B, C, 14, 9, 0xC33707D6 );
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P( C, D, A, B, 3, 14, 0xF4D50D87 );
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P( B, C, D, A, 8, 20, 0x455A14ED );
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P( A, B, C, D, 13, 5, 0xA9E3E905 );
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P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
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P( C, D, A, B, 7, 14, 0x676F02D9 );
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P( B, C, D, A, 12, 20, 0x8D2A4C8A );
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#undef F
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#define F(x,y,z) (x ^ y ^ z)
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P( A, B, C, D, 5, 4, 0xFFFA3942 );
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P( D, A, B, C, 8, 11, 0x8771F681 );
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P( C, D, A, B, 11, 16, 0x6D9D6122 );
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P( B, C, D, A, 14, 23, 0xFDE5380C );
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P( A, B, C, D, 1, 4, 0xA4BEEA44 );
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P( D, A, B, C, 4, 11, 0x4BDECFA9 );
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P( C, D, A, B, 7, 16, 0xF6BB4B60 );
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P( B, C, D, A, 10, 23, 0xBEBFBC70 );
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P( A, B, C, D, 13, 4, 0x289B7EC6 );
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P( D, A, B, C, 0, 11, 0xEAA127FA );
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P( C, D, A, B, 3, 16, 0xD4EF3085 );
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P( B, C, D, A, 6, 23, 0x04881D05 );
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P( A, B, C, D, 9, 4, 0xD9D4D039 );
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P( D, A, B, C, 12, 11, 0xE6DB99E5 );
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P( C, D, A, B, 15, 16, 0x1FA27CF8 );
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P( B, C, D, A, 2, 23, 0xC4AC5665 );
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P( A, B, C, D, 5, 4, 0xFFFA3942 );
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P( D, A, B, C, 8, 11, 0x8771F681 );
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P( C, D, A, B, 11, 16, 0x6D9D6122 );
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P( B, C, D, A, 14, 23, 0xFDE5380C );
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P( A, B, C, D, 1, 4, 0xA4BEEA44 );
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P( D, A, B, C, 4, 11, 0x4BDECFA9 );
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P( C, D, A, B, 7, 16, 0xF6BB4B60 );
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P( B, C, D, A, 10, 23, 0xBEBFBC70 );
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P( A, B, C, D, 13, 4, 0x289B7EC6 );
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P( D, A, B, C, 0, 11, 0xEAA127FA );
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P( C, D, A, B, 3, 16, 0xD4EF3085 );
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P( B, C, D, A, 6, 23, 0x04881D05 );
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P( A, B, C, D, 9, 4, 0xD9D4D039 );
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P( D, A, B, C, 12, 11, 0xE6DB99E5 );
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P( C, D, A, B, 15, 16, 0x1FA27CF8 );
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P( B, C, D, A, 2, 23, 0xC4AC5665 );
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#undef F
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#define F(x,y,z) (y ^ (x | ~z))
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P( A, B, C, D, 0, 6, 0xF4292244 );
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P( D, A, B, C, 7, 10, 0x432AFF97 );
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P( C, D, A, B, 14, 15, 0xAB9423A7 );
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P( B, C, D, A, 5, 21, 0xFC93A039 );
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P( A, B, C, D, 12, 6, 0x655B59C3 );
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P( D, A, B, C, 3, 10, 0x8F0CCC92 );
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P( C, D, A, B, 10, 15, 0xFFEFF47D );
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P( B, C, D, A, 1, 21, 0x85845DD1 );
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P( A, B, C, D, 8, 6, 0x6FA87E4F );
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P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
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P( C, D, A, B, 6, 15, 0xA3014314 );
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P( B, C, D, A, 13, 21, 0x4E0811A1 );
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P( A, B, C, D, 4, 6, 0xF7537E82 );
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P( D, A, B, C, 11, 10, 0xBD3AF235 );
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P( C, D, A, B, 2, 15, 0x2AD7D2BB );
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P( B, C, D, A, 9, 21, 0xEB86D391 );
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P( A, B, C, D, 0, 6, 0xF4292244 );
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P( D, A, B, C, 7, 10, 0x432AFF97 );
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P( C, D, A, B, 14, 15, 0xAB9423A7 );
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P( B, C, D, A, 5, 21, 0xFC93A039 );
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P( A, B, C, D, 12, 6, 0x655B59C3 );
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P( D, A, B, C, 3, 10, 0x8F0CCC92 );
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P( C, D, A, B, 10, 15, 0xFFEFF47D );
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P( B, C, D, A, 1, 21, 0x85845DD1 );
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P( A, B, C, D, 8, 6, 0x6FA87E4F );
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P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
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P( C, D, A, B, 6, 15, 0xA3014314 );
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P( B, C, D, A, 13, 21, 0x4E0811A1 );
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P( A, B, C, D, 4, 6, 0xF7537E82 );
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P( D, A, B, C, 11, 10, 0xBD3AF235 );
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P( C, D, A, B, 2, 15, 0x2AD7D2BB );
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P( B, C, D, A, 9, 21, 0xEB86D391 );
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#undef F
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ctx->state[0] += A;
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ctx->state[1] += B;
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ctx->state[2] += C;
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ctx->state[3] += D;
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ctx->state[0] += A;
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ctx->state[1] += B;
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ctx->state[2] += C;
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ctx->state[3] += D;
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}
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/*
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* MD5 process buffer
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*/
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void md5_update( md5_context *ctx, const unsigned char *input, int ilen )
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static
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void md5_update(struct md5_context *ctx, const unsigned char *input, int ilen)
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{
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int fill;
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unsigned long left;
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int fill;
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unsigned long left;
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if( ilen <= 0 )
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return;
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if (ilen <= 0)
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return;
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left = ctx->total[0] & 0x3F;
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fill = 64 - left;
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left = ctx->total[0] & 0x3F;
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fill = 64 - left;
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ctx->total[0] += ilen;
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ctx->total[0] &= 0xFFFFFFFF;
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ctx->total[0] += ilen;
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ctx->total[0] &= 0xFFFFFFFF;
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if( ctx->total[0] < (unsigned long) ilen )
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ctx->total[1]++;
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if (ctx->total[0] < (unsigned long)ilen)
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ctx->total[1]++;
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if( left && ilen >= fill )
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{
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memcpy( (void *) (ctx->buffer + left),
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(void *) input, fill );
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md5_process( ctx, ctx->buffer );
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input += fill;
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ilen -= fill;
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left = 0;
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}
|
||||
if (left && ilen >= fill) {
|
||||
memcpy((void *)(ctx->buffer + left), (void *)input, fill);
|
||||
md5_process(ctx, ctx->buffer);
|
||||
input += fill;
|
||||
ilen -= fill;
|
||||
left = 0;
|
||||
}
|
||||
|
||||
while( ilen >= 64 )
|
||||
{
|
||||
md5_process( ctx, input );
|
||||
input += 64;
|
||||
ilen -= 64;
|
||||
}
|
||||
while (ilen >= 64) {
|
||||
md5_process(ctx, input);
|
||||
input += 64;
|
||||
ilen -= 64;
|
||||
}
|
||||
|
||||
if( ilen > 0 )
|
||||
{
|
||||
memcpy( (void *) (ctx->buffer + left),
|
||||
(void *) input, ilen );
|
||||
}
|
||||
if (ilen > 0)
|
||||
memcpy((void *)(ctx->buffer + left), (void *) input, ilen);
|
||||
}
|
||||
|
||||
static const unsigned char md5_padding[64] =
|
||||
{
|
||||
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
||||
static const unsigned char md5_padding[64] = {
|
||||
0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
||||
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
|
||||
};
|
||||
|
||||
/*
|
||||
* MD5 final digest
|
||||
*/
|
||||
void md5_finish( md5_context *ctx, unsigned char output[16] )
|
||||
void md5(const unsigned char *input, int ilen, unsigned char output[16])
|
||||
{
|
||||
unsigned long last, padn;
|
||||
unsigned long high, low;
|
||||
unsigned char msglen[8];
|
||||
struct md5_context ctx;
|
||||
unsigned long last, padn;
|
||||
unsigned long high, low;
|
||||
unsigned char msglen[8];
|
||||
|
||||
high = ( ctx->total[0] >> 29 )
|
||||
| ( ctx->total[1] << 3 );
|
||||
low = ( ctx->total[0] << 3 );
|
||||
ctx.total[0] = 0;
|
||||
ctx.total[1] = 0;
|
||||
|
||||
PUT_ULONG_LE( low, msglen, 0 );
|
||||
PUT_ULONG_LE( high, msglen, 4 );
|
||||
ctx.state[0] = 0x67452301;
|
||||
ctx.state[1] = 0xEFCDAB89;
|
||||
ctx.state[2] = 0x98BADCFE;
|
||||
ctx.state[3] = 0x10325476;
|
||||
|
||||
last = ctx->total[0] & 0x3F;
|
||||
padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );
|
||||
md5_update(&ctx, input, ilen);
|
||||
|
||||
md5_update( ctx, (unsigned char *) md5_padding, padn );
|
||||
md5_update( ctx, msglen, 8 );
|
||||
high = (ctx.total[0] >> 29) | (ctx.total[1] << 3);
|
||||
low = (ctx.total[0] << 3);
|
||||
|
||||
PUT_ULONG_LE( ctx->state[0], output, 0 );
|
||||
PUT_ULONG_LE( ctx->state[1], output, 4 );
|
||||
PUT_ULONG_LE( ctx->state[2], output, 8 );
|
||||
PUT_ULONG_LE( ctx->state[3], output, 12 );
|
||||
PUT_ULONG_LE(low, msglen, 0);
|
||||
PUT_ULONG_LE(high, msglen, 4);
|
||||
|
||||
last = ctx.total[0] & 0x3F;
|
||||
padn = (last < 56) ? (56 - last) : (120 - last);
|
||||
|
||||
md5_update(&ctx, md5_padding, padn);
|
||||
md5_update(&ctx, msglen, 8);
|
||||
|
||||
PUT_ULONG_LE(ctx.state[0], output, 0);
|
||||
PUT_ULONG_LE(ctx.state[1], output, 4);
|
||||
PUT_ULONG_LE(ctx.state[2], output, 8);
|
||||
PUT_ULONG_LE(ctx.state[3], output, 12);
|
||||
}
|
||||
|
||||
/*
|
||||
* output = MD5( input buffer )
|
||||
*/
|
||||
void md5( const unsigned char *input, int ilen, unsigned char output[16] )
|
||||
{
|
||||
md5_context ctx;
|
||||
|
||||
md5_starts( &ctx );
|
||||
md5_update( &ctx, input, ilen );
|
||||
md5_finish( &ctx, output );
|
||||
|
||||
memset( &ctx, 0, sizeof( md5_context ) );
|
||||
}
|
||||
|
||||
/*
|
||||
* output = MD5( file contents )
|
||||
*/
|
||||
int md5_file( const char *path, unsigned char output[16] )
|
||||
{
|
||||
FILE *f;
|
||||
size_t n;
|
||||
md5_context ctx;
|
||||
unsigned char buf[1024];
|
||||
|
||||
if( ( f = fopen( path, "rb" ) ) == NULL )
|
||||
return( 1 );
|
||||
|
||||
md5_starts( &ctx );
|
||||
|
||||
while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
|
||||
md5_update( &ctx, buf, (int) n );
|
||||
|
||||
md5_finish( &ctx, output );
|
||||
|
||||
memset( &ctx, 0, sizeof( md5_context ) );
|
||||
|
||||
if( ferror( f ) != 0 )
|
||||
{
|
||||
fclose( f );
|
||||
return( 2 );
|
||||
}
|
||||
|
||||
fclose( f );
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue