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Text File  |  1996-09-29  |  7KB  |  206 lines
  1. /****************************************************************************
  2. *                                                                            *
  3. *                        cryptlib RIPEMD-160 Hash Routines                    *
  4. *                          Copyright Peter Gutmann 1996                        *
  5. *                                                                            *
  6. ****************************************************************************/
  7.  
  8. #include <ctype.h>
  9. #include <stdio.h>
  10. #include <stdlib.h>
  11. #include <string.h>
  12. #include <time.h>
  13. #include "crypt.h"
  14. #ifdef INC_ALL
  15.   #include "ripemd.h"
  16. #else
  17.   #include "hash/ripemd.h"
  18. #endif /* Compiler-specific includes */
  19.  
  20. /****************************************************************************
  21. *                                                                            *
  22. *                                RIPEMD160 Self-test Routines                        *
  23. *                                                                            *
  24. ****************************************************************************/
  25.  
  26. /* Test the RIPEMD160 output against the test vectors given in the RIPEMD-160
  27.    paper */
  28.  
  29. void ripemd160HashBuffer( void *hashInfo, BYTE *outBuffer, BYTE *inBuffer,
  30.                           int length, const HASH_STATE hashState );
  31.  
  32. static struct {
  33.     char *data;                        /* Data to hash */
  34.     int length;                        /* Length of data */
  35.     BYTE digest[ RIPEMD160_DIGESTSIZE ];    /* Digest of data */
  36.     } digestValues[] = {
  37.     { "", 0,
  38.       { 0x9C, 0x11, 0x85, 0xA5, 0xC5, 0xE9, 0xFC, 0x54,
  39.         0x61, 0x28, 0x08, 0x97, 0x7E, 0xE8, 0xF5, 0x48,
  40.         0xB2, 0x25, 0x8D, 0x31 } },
  41.     { "a", 1,
  42.       { 0x0B, 0xDC, 0x9D, 0x2D, 0x25, 0x6B, 0x3E, 0xE9,
  43.         0xDA, 0xAE, 0x34, 0x7B, 0xE6, 0xF4, 0xDC, 0x83,
  44.         0x5A, 0x46, 0x7F, 0xFE } },
  45.     { "abc", 3,
  46.       { 0x8E, 0xB2, 0x08, 0xF7, 0xE0, 0x5D, 0x98, 0x7A,
  47.         0x9B, 0x04, 0x4A, 0x8E, 0x98, 0xC6, 0xB0, 0x87,
  48.         0xF1, 0x5A, 0x0B, 0xFC } },
  49.     { "message digest", 14,
  50.       { 0x5D, 0x06, 0x89, 0xEF, 0x49, 0xD2, 0xFA, 0xE5,
  51.         0x72, 0xB8, 0x81, 0xB1, 0x23, 0xA8, 0x5F, 0xFA,
  52.         0x21, 0x59, 0x5F, 0x36 } },
  53.     { "abcdefghijklmnopqrstuvwxyz", 26,
  54.       { 0xF7, 0x1C, 0x27, 0x10, 0x9C, 0x69, 0x2C, 0x1B,
  55.         0x56, 0xBB, 0xDC, 0xEB, 0x5B, 0x9D, 0x28, 0x65,
  56.         0xB3, 0x70, 0x8D, 0xBC } },
  57.     { "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq", 56,
  58.       { 0x12, 0xA0, 0x53, 0x38, 0x4A, 0x9C, 0x0C, 0x88,
  59.         0xE4, 0x05, 0xA0, 0x6C, 0x27, 0xDC, 0xF4, 0x9A,
  60.         0xDA, 0x62, 0xEB, 0x2B } },
  61.     { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789", 62,
  62.       { 0xB0, 0xE2, 0x0B, 0x6E, 0x31, 0x16, 0x64, 0x02,
  63.         0x86, 0xED, 0x3A, 0x87, 0xA5, 0x71, 0x30, 0x79,
  64.         0xB2, 0x1F, 0x51, 0x89 } },
  65.     { "12345678901234567890123456789012345678901234567890123456789012345678901234567890", 80,
  66.       { 0x9B, 0x75, 0x2E, 0x45, 0x57, 0x3D, 0x4B, 0x39,
  67.         0xF4, 0xDB, 0xD3, 0x32, 0x3C, 0xAB, 0x82, 0xBF,
  68.         0x63, 0x32, 0x6B, 0xFB } },
  69.     { NULL, 0, { 0 } }
  70.     };
  71.  
  72. int ripemd160SelfTest( void )
  73.     {
  74.     BYTE digest[ RIPEMD160_DIGESTSIZE ];
  75.     int i;
  76.  
  77.     /* Test RIPEMD160 against the test vectors from the RIPEMD-160 paper */
  78.     for( i = 0; digestValues[ i ].data != NULL; i++ )
  79.         {
  80.         ripemd160HashBuffer( NULL, digest, ( BYTE * ) digestValues[ i ].data,
  81.                              digestValues[ i ].length, HASH_ALL );
  82.         if( memcmp( digest, digestValues[ i ].digest, RIPEMD160_DIGESTSIZE ) )
  83.             return( CRYPT_SELFTEST );
  84.         }
  85.  
  86.     return( CRYPT_OK );
  87.     }
  88.  
  89. /****************************************************************************
  90. *                                                                            *
  91. *                            Init/Shutdown Routines                            *
  92. *                                                                            *
  93. ****************************************************************************/
  94.  
  95. /* Perform auxiliary init and shutdown actions on an encryption context */
  96.  
  97. int ripemd160Init( CRYPT_INFO *cryptInfo )
  98.     {
  99.     int status;
  100.  
  101.     /* Allocate memory for the RIPEMD160 context within the encryption context */
  102.     if( cryptInfo->privateData != NULL )
  103.         return( CRYPT_INITED );
  104.     if( ( status = secureMalloc( &cryptInfo->privateData, sizeof( RIPEMD160_INFO ) ) ) != CRYPT_OK )
  105.         return( status );
  106.     ripemd160Initial( ( RIPEMD160_INFO * ) cryptInfo->privateData );
  107.  
  108.     return( CRYPT_OK );
  109.     }
  110.  
  111. int ripemd160End( CRYPT_INFO *cryptInfo )
  112.     {
  113.     /* Free any allocated memory */
  114.     secureFree( &cryptInfo->privateData );
  115.  
  116.     return( CRYPT_OK );
  117.     }
  118.  
  119. /****************************************************************************
  120. *                                                                            *
  121. *                            RIPEMD160 Hash Routines                            *
  122. *                                                                            *
  123. ****************************************************************************/
  124.  
  125. /* Hash data using RIPEMD160 */
  126.  
  127. int ripemd160Hash( CRYPT_INFO *cryptInfo, BYTE *buffer, int noBytes )
  128.     {
  129.     RIPEMD160_INFO *ripemd160Info = ( RIPEMD160_INFO * ) cryptInfo->privateData;
  130.  
  131.     /* If we've already called ripemd160Final(), we can't continue */
  132.     if( ripemd160Info->done )
  133.         return( CRYPT_COMPLETE );
  134.  
  135.     if( !noBytes )
  136.         ripemd160Final( ripemd160Info );
  137.     else
  138.         ripemd160Update( ripemd160Info, buffer, noBytes );
  139.  
  140.     return( CRYPT_OK );
  141.     }
  142.  
  143. /* Retrieve the hash value */
  144.  
  145. int ripemd160GetData( CRYPT_INFO *cryptInfo, BYTE *buffer )
  146.     {
  147.     RIPEMD160_INFO *ripemd160Info = ( RIPEMD160_INFO * ) cryptInfo->privateData;
  148.     int i;
  149.  
  150.     /* Extract the digest into the memory buffer */
  151.     for( i = 0; i < RIPEMD160_DIGESTSIZE / 4; i++ )
  152.         {
  153.         mputLLong( buffer, ripemd160Info->digest[ i ] );
  154.         }
  155.  
  156.     return( ( ripemd160Info->done ) ? CRYPT_OK : CRYPT_INCOMPLETE );
  157.     }
  158.  
  159. /* Internal API: Hash a single block of memory without the overhead of
  160.    creating an encryption context */
  161.  
  162. void ripemd160HashBuffer( void *hashInfo, BYTE *outBuffer, BYTE *inBuffer,
  163.                           int length, const HASH_STATE hashState )
  164.     {
  165.     RIPEMD160_INFO *ripemd160Info = ( RIPEMD160_INFO * ) hashInfo, ripemd160InfoBuffer;
  166.     int i;
  167.  
  168.     /* If the user has left it up to us to allocate the hash context buffer,
  169.        use the internal buffer */
  170.     if( ripemd160Info == NULL )
  171.         ripemd160Info = &ripemd160InfoBuffer;
  172.  
  173.     if( hashState == HASH_ALL )
  174.         {
  175.         ripemd160Initial( ripemd160Info );
  176.         ripemd160Update( ripemd160Info, inBuffer, length );
  177.         ripemd160Final( ripemd160Info );
  178.         for( i = 0; i < RIPEMD160_DIGESTSIZE / 4; i++ )
  179.             {
  180.             mputLLong( outBuffer, ripemd160Info->digest[ i ] );
  181.             }
  182.         }
  183.     else
  184.         switch( hashState )
  185.             {
  186.             case HASH_START:
  187.                 ripemd160Initial( ripemd160Info );
  188.                 /* Drop through */
  189.  
  190.             case HASH_CONTINUE:
  191.                 ripemd160Update( ripemd160Info, inBuffer, length );
  192.                 break;
  193.  
  194.             case HASH_END:
  195.                 ripemd160Update( ripemd160Info, inBuffer, length );
  196.                 ripemd160Final( ripemd160Info );
  197.                 for( i = 0; i < RIPEMD160_DIGESTSIZE / 4; i++ )
  198.                     {
  199.                     mputLLong( outBuffer, ripemd160Info->digest[ i ] );
  200.                     }
  201.             }
  202.  
  203.     /* Clean up */
  204.     zeroise( &ripemd160InfoBuffer, sizeof( RIPEMD160_INFO ) );
  205.     }
  206.