md5.cpp - external/smhasher - Git at Google

 #include <memory.h>
 #include "Types.h"

 // "Derived from the RSA Data Security, Inc. MD5 Message Digest Algorithm"

 /**
  * \brief          MD5 context structure
  */
 typedef struct
 {
     unsigned long total[2];     /*!< number of bytes processed  */
     unsigned long state[4];     /*!< intermediate digest state  */
     unsigned char buffer[64];   /*!< data block being processed */

     unsigned char ipad[64];     /*!< HMAC: inner padding        */
     unsigned char opad[64];     /*!< HMAC: outer padding        */
 }
 md5_context;

 /**
  * \brief          MD5 context setup
  *
  * \param ctx      context to be initialized
  */
 void md5_starts( md5_context *ctx );

 /**
  * \brief          MD5 process buffer
  *
  * \param ctx      MD5 context
  * \param input    buffer holding the  data
  * \param ilen     length of the input data
  */
 void md5_update( md5_context *ctx, unsigned char *input, int ilen );

 /**
  * \brief          MD5 final digest
  *
  * \param ctx      MD5 context
  * \param output   MD5 checksum result
  */
 void md5_finish( md5_context *ctx, unsigned char output[16] );

 /**
  * \brief          Output = MD5( input buffer )
  *
  * \param input    buffer holding the  data
  * \param ilen     length of the input data
  * \param output   MD5 checksum result
  */
 void md5( unsigned char *input, int ilen, unsigned char output[16] );

 /**
  * \brief          Output = MD5( file contents )
  *
  * \param path     input file name
  * \param output   MD5 checksum result
  *
  * \return         0 if successful, 1 if fopen failed,
  *                 or 2 if fread failed
  */
 int md5_file( char *path, unsigned char output[16] );

 /**
  * \brief          MD5 HMAC context setup
  *
  * \param ctx      HMAC context to be initialized
  * \param key      HMAC secret key
  * \param keylen   length of the HMAC key
  */
 void md5_hmac_starts( md5_context *ctx, unsigned char *key, int keylen );

 /**
  * \brief          MD5 HMAC process buffer
  *
  * \param ctx      HMAC context
  * \param input    buffer holding the  data
  * \param ilen     length of the input data
  */
 void md5_hmac_update( md5_context *ctx, unsigned char *input, int ilen );

 /**
  * \brief          MD5 HMAC final digest
  *
  * \param ctx      HMAC context
  * \param output   MD5 HMAC checksum result
  */
 void md5_hmac_finish( md5_context *ctx, unsigned char output[16] );

 /**
  * \brief          Output = HMAC-MD5( hmac key, input buffer )
  *
  * \param key      HMAC secret key
  * \param keylen   length of the HMAC key
  * \param input    buffer holding the  data
  * \param ilen     length of the input data
  * \param output   HMAC-MD5 result
  */
 void md5_hmac( unsigned char *key, int keylen,
                unsigned char *input, int ilen,
                unsigned char output[16] );

 /**
  * \brief          Checkup routine
  *
  * \return         0 if successful, or 1 if the test failed
  */
 int md5_self_test( int verbose );

 /*
  * 32-bit integer manipulation macros (little endian)
  */
 #ifndef GET_ULONG_LE
 #define GET_ULONG_LE(n,b,i)                             \
 {                                                       \
     (n) = ( (unsigned long) (b)[(i)    ]       )        \
         | ( (unsigned long) (b)[(i) + 1] <<  8 )        \
         | ( (unsigned long) (b)[(i) + 2] << 16 )        \
         | ( (unsigned long) (b)[(i) + 3] << 24 );       \
 }
 #endif

 #ifndef PUT_ULONG_LE
 #define PUT_ULONG_LE(n,b,i)                             \
 {                                                       \
     (b)[(i)    ] = (unsigned char) ( (n)       );       \
     (b)[(i) + 1] = (unsigned char) ( (n) >>  8 );       \
     (b)[(i) + 2] = (unsigned char) ( (n) >> 16 );       \
     (b)[(i) + 3] = (unsigned char) ( (n) >> 24 );       \
 }
 #endif

 /*
  * MD5 context setup
  */
 void md5_starts( md5_context *ctx )
 {
     ctx->total[0] = 0;
     ctx->total[1] = 0;

     ctx->state[0] = 0x67452301;
     ctx->state[1] = 0xEFCDAB89;
     ctx->state[2] = 0x98BADCFE;
     ctx->state[3] = 0x10325476;
 }

 static void md5_process( md5_context *ctx, unsigned char data[64] )
 {
     unsigned long X[16], A, B, C, D;

     GET_ULONG_LE( X[ 0], data,  0 );
     GET_ULONG_LE( X[ 1], data,  4 );
     GET_ULONG_LE( X[ 2], data,  8 );
     GET_ULONG_LE( X[ 3], data, 12 );
     GET_ULONG_LE( X[ 4], data, 16 );
     GET_ULONG_LE( X[ 5], data, 20 );
     GET_ULONG_LE( X[ 6], data, 24 );
     GET_ULONG_LE( X[ 7], data, 28 );
     GET_ULONG_LE( X[ 8], data, 32 );
     GET_ULONG_LE( X[ 9], data, 36 );
     GET_ULONG_LE( X[10], data, 40 );
     GET_ULONG_LE( X[11], data, 44 );
     GET_ULONG_LE( X[12], data, 48 );
     GET_ULONG_LE( X[13], data, 52 );
     GET_ULONG_LE( X[14], data, 56 );
     GET_ULONG_LE( X[15], data, 60 );

 #define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n)))

 #define P(a,b,c,d,k,s,t)                                \
 {                                                       \
     a += F(b,c,d) + X[k] + t; a = S(a,s) + b;           \
 }

     A = ctx->state[0];
     B = ctx->state[1];
     C = ctx->state[2];
     D = ctx->state[3];

 #define F(x,y,z) (z ^ (x & (y ^ z)))

     P( A, B, C, D,  0,  7, 0xD76AA478 );
     P( D, A, B, C,  1, 12, 0xE8C7B756 );
     P( C, D, A, B,  2, 17, 0x242070DB );
     P( B, C, D, A,  3, 22, 0xC1BDCEEE );
     P( A, B, C, D,  4,  7, 0xF57C0FAF );
     P( D, A, B, C,  5, 12, 0x4787C62A );
     P( C, D, A, B,  6, 17, 0xA8304613 );
     P( B, C, D, A,  7, 22, 0xFD469501 );
     P( A, B, C, D,  8,  7, 0x698098D8 );
     P( D, A, B, C,  9, 12, 0x8B44F7AF );
     P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
     P( B, C, D, A, 11, 22, 0x895CD7BE );
     P( A, B, C, D, 12,  7, 0x6B901122 );
     P( D, A, B, C, 13, 12, 0xFD987193 );
     P( C, D, A, B, 14, 17, 0xA679438E );
     P( B, C, D, A, 15, 22, 0x49B40821 );

 #undef F

 #define F(x,y,z) (y ^ (z & (x ^ y)))

     P( A, B, C, D,  1,  5, 0xF61E2562 );
     P( D, A, B, C,  6,  9, 0xC040B340 );
     P( C, D, A, B, 11, 14, 0x265E5A51 );
     P( B, C, D, A,  0, 20, 0xE9B6C7AA );
     P( A, B, C, D,  5,  5, 0xD62F105D );
     P( D, A, B, C, 10,  9, 0x02441453 );
     P( C, D, A, B, 15, 14, 0xD8A1E681 );
     P( B, C, D, A,  4, 20, 0xE7D3FBC8 );
     P( A, B, C, D,  9,  5, 0x21E1CDE6 );
     P( D, A, B, C, 14,  9, 0xC33707D6 );
     P( C, D, A, B,  3, 14, 0xF4D50D87 );
     P( B, C, D, A,  8, 20, 0x455A14ED );
     P( A, B, C, D, 13,  5, 0xA9E3E905 );
     P( D, A, B, C,  2,  9, 0xFCEFA3F8 );
     P( C, D, A, B,  7, 14, 0x676F02D9 );
     P( B, C, D, A, 12, 20, 0x8D2A4C8A );

 #undef F

 #define F(x,y,z) (x ^ y ^ z)

     P( A, B, C, D,  5,  4, 0xFFFA3942 );
     P( D, A, B, C,  8, 11, 0x8771F681 );
     P( C, D, A, B, 11, 16, 0x6D9D6122 );
     P( B, C, D, A, 14, 23, 0xFDE5380C );
     P( A, B, C, D,  1,  4, 0xA4BEEA44 );
     P( D, A, B, C,  4, 11, 0x4BDECFA9 );
     P( C, D, A, B,  7, 16, 0xF6BB4B60 );
     P( B, C, D, A, 10, 23, 0xBEBFBC70 );
     P( A, B, C, D, 13,  4, 0x289B7EC6 );
     P( D, A, B, C,  0, 11, 0xEAA127FA );
     P( C, D, A, B,  3, 16, 0xD4EF3085 );
     P( B, C, D, A,  6, 23, 0x04881D05 );
     P( A, B, C, D,  9,  4, 0xD9D4D039 );
     P( D, A, B, C, 12, 11, 0xE6DB99E5 );
     P( C, D, A, B, 15, 16, 0x1FA27CF8 );
     P( B, C, D, A,  2, 23, 0xC4AC5665 );

 #undef F

 #define F(x,y,z) (y ^ (x | ~z))

     P( A, B, C, D,  0,  6, 0xF4292244 );
     P( D, A, B, C,  7, 10, 0x432AFF97 );
     P( C, D, A, B, 14, 15, 0xAB9423A7 );
     P( B, C, D, A,  5, 21, 0xFC93A039 );
     P( A, B, C, D, 12,  6, 0x655B59C3 );
     P( D, A, B, C,  3, 10, 0x8F0CCC92 );
     P( C, D, A, B, 10, 15, 0xFFEFF47D );
     P( B, C, D, A,  1, 21, 0x85845DD1 );
     P( A, B, C, D,  8,  6, 0x6FA87E4F );
     P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
     P( C, D, A, B,  6, 15, 0xA3014314 );
     P( B, C, D, A, 13, 21, 0x4E0811A1 );
     P( A, B, C, D,  4,  6, 0xF7537E82 );
     P( D, A, B, C, 11, 10, 0xBD3AF235 );
     P( C, D, A, B,  2, 15, 0x2AD7D2BB );
     P( B, C, D, A,  9, 21, 0xEB86D391 );

 #undef F

     ctx->state[0] += A;
     ctx->state[1] += B;
     ctx->state[2] += C;
     ctx->state[3] += D;
 }

 /*
  * MD5 process buffer
  */
 void md5_update( md5_context *ctx, unsigned char *input, int ilen )
 {
     int fill;
     unsigned long left;

     if( ilen <= 0 )
         return;

     left = ctx->total[0] & 0x3F;
     fill = 64 - left;

     ctx->total[0] += ilen;
     ctx->total[0] &= 0xFFFFFFFF;

     if( ctx->total[0] < (unsigned long) ilen )
         ctx->total[1]++;

     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;
     }

     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
 };

 /*
  * MD5 final digest
  */
 void md5_finish( md5_context *ctx, unsigned char output[16] )
 {
     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 );

     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, (unsigned char *) 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( 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 ) );
 }

 unsigned int md5hash ( const void * input, int len, unsigned int /*seed*/ )
 {
   unsigned int hash[4];

   md5((unsigned char *)input,len,(unsigned char *)hash);

   //return hash[0] ^ hash[1] ^ hash[2] ^ hash[3];

   return hash[0];
 }

 void md5_32            ( const void * key, int len, uint32_t /*seed*/, void * out )
 {
   unsigned int hash[4];

   md5((unsigned char*)key,len,(unsigned char*)hash);

   *(uint32_t*)out = hash[0];
 }
	#include <memory.h>
	#include "Types.h"

	// "Derived from the RSA Data Security, Inc. MD5 Message Digest Algorithm"

	/**
	* \brief MD5 context structure
	*/
	typedef struct
	{
	unsigned long total[2]; /!< number of bytes processed /
	unsigned long state[4]; /!< intermediate digest state /
	unsigned char buffer[64]; /!< data block being processed /

	unsigned char ipad[64]; /!< HMAC: inner padding /
	unsigned char opad[64]; /!< HMAC: outer padding /
	}
	md5_context;

	/**
	* \brief MD5 context setup
	*
	* \param ctx context to be initialized
	*/
	void md5_starts( md5_context *ctx );

	/**
	* \brief MD5 process buffer
	*
	* \param ctx MD5 context
	* \param input buffer holding the data
	* \param ilen length of the input data
	*/
	void md5_update( md5_context ctx, unsigned char input, int ilen );

	/**
	* \brief MD5 final digest
	*
	* \param ctx MD5 context
	* \param output MD5 checksum result
	*/
	void md5_finish( md5_context *ctx, unsigned char output[16] );

	/**
	* \brief Output = MD5( input buffer )
	*
	* \param input buffer holding the data
	* \param ilen length of the input data
	* \param output MD5 checksum result
	*/
	void md5( unsigned char *input, int ilen, unsigned char output[16] );

	/**
	* \brief Output = MD5( file contents )
	*
	* \param path input file name
	* \param output MD5 checksum result
	*
	* \return 0 if successful, 1 if fopen failed,
	* or 2 if fread failed
	*/
	int md5_file( char *path, unsigned char output[16] );

	/**
	* \brief MD5 HMAC context setup
	*
	* \param ctx HMAC context to be initialized
	* \param key HMAC secret key
	* \param keylen length of the HMAC key
	*/
	void md5_hmac_starts( md5_context ctx, unsigned char key, int keylen );

	/**
	* \brief MD5 HMAC process buffer
	*
	* \param ctx HMAC context
	* \param input buffer holding the data
	* \param ilen length of the input data
	*/
	void md5_hmac_update( md5_context ctx, unsigned char input, int ilen );

	/**
	* \brief MD5 HMAC final digest
	*
	* \param ctx HMAC context
	* \param output MD5 HMAC checksum result
	*/
	void md5_hmac_finish( md5_context *ctx, unsigned char output[16] );

	/**
	* \brief Output = HMAC-MD5( hmac key, input buffer )
	*
	* \param key HMAC secret key
	* \param keylen length of the HMAC key
	* \param input buffer holding the data
	* \param ilen length of the input data
	* \param output HMAC-MD5 result
	*/
	void md5_hmac( unsigned char *key, int keylen,
	unsigned char *input, int ilen,
	unsigned char output[16] );

	/**
	* \brief Checkup routine
	*
	* \return 0 if successful, or 1 if the test failed
	*/
	int md5_self_test( int verbose );

	/*
	* 32-bit integer manipulation macros (little endian)
	*/
	#ifndef GET_ULONG_LE
	#define GET_ULONG_LE(n,b,i) \
	{ \
	(n) = ( (unsigned long) (b)[(i) ] ) \
	\| ( (unsigned long) (b)[(i) + 1] << 8 ) \
	\| ( (unsigned long) (b)[(i) + 2] << 16 ) \
	\| ( (unsigned long) (b)[(i) + 3] << 24 ); \
	}
	#endif

	#ifndef PUT_ULONG_LE
	#define PUT_ULONG_LE(n,b,i) \
	{ \
	(b)[(i) ] = (unsigned char) ( (n) ); \
	(b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \
	(b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \
	(b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \
	}
	#endif

	/*
	* MD5 context setup
	*/
	void md5_starts( md5_context *ctx )
	{
	ctx->total[0] = 0;
	ctx->total[1] = 0;

	ctx->state[0] = 0x67452301;
	ctx->state[1] = 0xEFCDAB89;
	ctx->state[2] = 0x98BADCFE;
	ctx->state[3] = 0x10325476;
	}

	static void md5_process( md5_context *ctx, unsigned char data[64] )
	{
	unsigned long X[16], A, B, C, D;

	GET_ULONG_LE( X[ 0], data, 0 );
	GET_ULONG_LE( X[ 1], data, 4 );
	GET_ULONG_LE( X[ 2], data, 8 );
	GET_ULONG_LE( X[ 3], data, 12 );
	GET_ULONG_LE( X[ 4], data, 16 );
	GET_ULONG_LE( X[ 5], data, 20 );
	GET_ULONG_LE( X[ 6], data, 24 );
	GET_ULONG_LE( X[ 7], data, 28 );
	GET_ULONG_LE( X[ 8], data, 32 );
	GET_ULONG_LE( X[ 9], data, 36 );
	GET_ULONG_LE( X[10], data, 40 );
	GET_ULONG_LE( X[11], data, 44 );
	GET_ULONG_LE( X[12], data, 48 );
	GET_ULONG_LE( X[13], data, 52 );
	GET_ULONG_LE( X[14], data, 56 );
	GET_ULONG_LE( X[15], data, 60 );

	#define S(x,n) ((x << n) \| ((x & 0xFFFFFFFF) >> (32 - n)))

	#define P(a,b,c,d,k,s,t) \
	{ \
	a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \
	}

	A = ctx->state[0];
	B = ctx->state[1];
	C = ctx->state[2];
	D = ctx->state[3];

	#define F(x,y,z) (z ^ (x & (y ^ z)))

	P( A, B, C, D, 0, 7, 0xD76AA478 );
	P( D, A, B, C, 1, 12, 0xE8C7B756 );
	P( C, D, A, B, 2, 17, 0x242070DB );
	P( B, C, D, A, 3, 22, 0xC1BDCEEE );
	P( A, B, C, D, 4, 7, 0xF57C0FAF );
	P( D, A, B, C, 5, 12, 0x4787C62A );
	P( C, D, A, B, 6, 17, 0xA8304613 );
	P( B, C, D, A, 7, 22, 0xFD469501 );
	P( A, B, C, D, 8, 7, 0x698098D8 );
	P( D, A, B, C, 9, 12, 0x8B44F7AF );
	P( C, D, A, B, 10, 17, 0xFFFF5BB1 );
	P( B, C, D, A, 11, 22, 0x895CD7BE );
	P( A, B, C, D, 12, 7, 0x6B901122 );
	P( D, A, B, C, 13, 12, 0xFD987193 );
	P( C, D, A, B, 14, 17, 0xA679438E );
	P( B, C, D, A, 15, 22, 0x49B40821 );

	#undef F

	#define F(x,y,z) (y ^ (z & (x ^ y)))

	P( A, B, C, D, 1, 5, 0xF61E2562 );
	P( D, A, B, C, 6, 9, 0xC040B340 );
	P( C, D, A, B, 11, 14, 0x265E5A51 );
	P( B, C, D, A, 0, 20, 0xE9B6C7AA );
	P( A, B, C, D, 5, 5, 0xD62F105D );
	P( D, A, B, C, 10, 9, 0x02441453 );
	P( C, D, A, B, 15, 14, 0xD8A1E681 );
	P( B, C, D, A, 4, 20, 0xE7D3FBC8 );
	P( A, B, C, D, 9, 5, 0x21E1CDE6 );
	P( D, A, B, C, 14, 9, 0xC33707D6 );
	P( C, D, A, B, 3, 14, 0xF4D50D87 );
	P( B, C, D, A, 8, 20, 0x455A14ED );
	P( A, B, C, D, 13, 5, 0xA9E3E905 );
	P( D, A, B, C, 2, 9, 0xFCEFA3F8 );
	P( C, D, A, B, 7, 14, 0x676F02D9 );
	P( B, C, D, A, 12, 20, 0x8D2A4C8A );

	#undef F

	#define F(x,y,z) (x ^ y ^ z)

	P( A, B, C, D, 5, 4, 0xFFFA3942 );
	P( D, A, B, C, 8, 11, 0x8771F681 );
	P( C, D, A, B, 11, 16, 0x6D9D6122 );
	P( B, C, D, A, 14, 23, 0xFDE5380C );
	P( A, B, C, D, 1, 4, 0xA4BEEA44 );
	P( D, A, B, C, 4, 11, 0x4BDECFA9 );
	P( C, D, A, B, 7, 16, 0xF6BB4B60 );
	P( B, C, D, A, 10, 23, 0xBEBFBC70 );
	P( A, B, C, D, 13, 4, 0x289B7EC6 );
	P( D, A, B, C, 0, 11, 0xEAA127FA );
	P( C, D, A, B, 3, 16, 0xD4EF3085 );
	P( B, C, D, A, 6, 23, 0x04881D05 );
	P( A, B, C, D, 9, 4, 0xD9D4D039 );
	P( D, A, B, C, 12, 11, 0xE6DB99E5 );
	P( C, D, A, B, 15, 16, 0x1FA27CF8 );
	P( B, C, D, A, 2, 23, 0xC4AC5665 );

	#undef F

	#define F(x,y,z) (y ^ (x \| ~z))

	P( A, B, C, D, 0, 6, 0xF4292244 );
	P( D, A, B, C, 7, 10, 0x432AFF97 );
	P( C, D, A, B, 14, 15, 0xAB9423A7 );
	P( B, C, D, A, 5, 21, 0xFC93A039 );
	P( A, B, C, D, 12, 6, 0x655B59C3 );
	P( D, A, B, C, 3, 10, 0x8F0CCC92 );
	P( C, D, A, B, 10, 15, 0xFFEFF47D );
	P( B, C, D, A, 1, 21, 0x85845DD1 );
	P( A, B, C, D, 8, 6, 0x6FA87E4F );
	P( D, A, B, C, 15, 10, 0xFE2CE6E0 );
	P( C, D, A, B, 6, 15, 0xA3014314 );
	P( B, C, D, A, 13, 21, 0x4E0811A1 );
	P( A, B, C, D, 4, 6, 0xF7537E82 );
	P( D, A, B, C, 11, 10, 0xBD3AF235 );
	P( C, D, A, B, 2, 15, 0x2AD7D2BB );
	P( B, C, D, A, 9, 21, 0xEB86D391 );

	#undef F

	ctx->state[0] += A;
	ctx->state[1] += B;
	ctx->state[2] += C;
	ctx->state[3] += D;
	}

	/*
	* MD5 process buffer
	*/
	void md5_update( md5_context ctx, unsigned char input, int ilen )
	{
	int fill;
	unsigned long left;

	if( ilen <= 0 )
	return;

	left = ctx->total[0] & 0x3F;
	fill = 64 - left;

	ctx->total[0] += ilen;
	ctx->total[0] &= 0xFFFFFFFF;

	if( ctx->total[0] < (unsigned long) ilen )
	ctx->total[1]++;

	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;
	}

	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
	};

	/*
	* MD5 final digest
	*/
	void md5_finish( md5_context *ctx, unsigned char output[16] )
	{
	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 );

	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, (unsigned char *) 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( 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 ) );
	}

	unsigned int md5hash ( const void * input, int len, unsigned int /seed/ )
	{
	unsigned int hash[4];

	md5((unsigned char )input,len,(unsigned char )hash);

	//return hash[0] ^ hash[1] ^ hash[2] ^ hash[3];

	return hash[0];
	}

	void md5_32 ( const void * key, int len, uint32_t /seed/, void * out )
	{
	unsigned int hash[4];

	md5((unsigned char)key,len,(unsigned char)hash);

	(uint32_t)out = hash[0];
	}