library/ripemd160.c - mirror/mbed-tls.git - TrustedFirmware Git Browser

 /*
  *  RIPE MD-160 implementation
  *
  *  Copyright (C) 2014-2014, Brainspark B.V.
  *
  *  This file is part of PolarSSL (http://www.polarssl.org)
  *  Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
  *
  *  All rights reserved.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License as published by
  *  the Free Software Foundation; either version 2 of the License, or
  *  (at your option) any later version.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License along
  *  with this program; if not, write to the Free Software Foundation, Inc.,
  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */

 /*
  *  The RIPEMD-160 algorithm was designed by RIPE in 1996
  *  http://homes.esat.kuleuven.be/~bosselae/ripemd160.html
  *  http://ehash.iaik.tugraz.at/wiki/RIPEMD-160
  */

 #if !defined(POLARSSL_CONFIG_FILE)
 #include "polarssl/config.h"
 #else
 #include POLARSSL_CONFIG_FILE
 #endif

 #if defined(POLARSSL_RIPEMD160_C)

 #include "polarssl/ripemd160.h"

 #if defined(POLARSSL_FS_IO) || defined(POLARSSL_SELF_TEST)
 #include <stdio.h>
 #endif

 #if defined(POLARSSL_SELF_TEST)
 #include <string.h>
 #endif

 #if defined(POLARSSL_PLATFORM_C)
 #include "polarssl/platform.h"
 #else
 #define polarssl_printf printf
 #endif

 /*
  * 32-bit integer manipulation macros (little endian)
  */
 #ifndef GET_UINT32_LE
 #define GET_UINT32_LE(n,b,i)                            \
 {                                                       \
     (n) = ( (uint32_t) (b)[(i)    ]       )             \
         | ( (uint32_t) (b)[(i) + 1] <<  8 )             \
         | ( (uint32_t) (b)[(i) + 2] << 16 )             \
         | ( (uint32_t) (b)[(i) + 3] << 24 );            \
 }
 #endif

 #ifndef PUT_UINT32_LE
 #define PUT_UINT32_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

 /* Implementation that should never be optimized out by the compiler */
 static void polarssl_zeroize( void *v, size_t n ) {
     volatile unsigned char *p = v; while( n-- ) *p++ = 0;
 }

 void ripemd160_init( ripemd160_context *ctx )
 {
     memset( ctx, 0, sizeof( ripemd160_context ) );
 }

 void ripemd160_free( ripemd160_context *ctx )
 {
     if( ctx == NULL )
         return;

     polarssl_zeroize( ctx, sizeof( ripemd160_context ) );
 }

 /*
  * RIPEMD-160 context setup
  */
 void ripemd160_starts( ripemd160_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;
     ctx->state[4] = 0xC3D2E1F0;
 }

 /*
  * Process one block
  */
 void ripemd160_process( ripemd160_context *ctx, const unsigned char data[64] )
 {
     uint32_t A, B, C, D, E, Ap, Bp, Cp, Dp, Ep, X[16];

     GET_UINT32_LE( X[ 0], data,  0 );
     GET_UINT32_LE( X[ 1], data,  4 );
     GET_UINT32_LE( X[ 2], data,  8 );
     GET_UINT32_LE( X[ 3], data, 12 );
     GET_UINT32_LE( X[ 4], data, 16 );
     GET_UINT32_LE( X[ 5], data, 20 );
     GET_UINT32_LE( X[ 6], data, 24 );
     GET_UINT32_LE( X[ 7], data, 28 );
     GET_UINT32_LE( X[ 8], data, 32 );
     GET_UINT32_LE( X[ 9], data, 36 );
     GET_UINT32_LE( X[10], data, 40 );
     GET_UINT32_LE( X[11], data, 44 );
     GET_UINT32_LE( X[12], data, 48 );
     GET_UINT32_LE( X[13], data, 52 );
     GET_UINT32_LE( X[14], data, 56 );
     GET_UINT32_LE( X[15], data, 60 );

     A = Ap = ctx->state[0];
     B = Bp = ctx->state[1];
     C = Cp = ctx->state[2];
     D = Dp = ctx->state[3];
     E = Ep = ctx->state[4];

 #define F1( x, y, z )   ( x ^ y ^ z )
 #define F2( x, y, z )   ( ( x & y ) | ( ~x & z ) )
 #define F3( x, y, z )   ( ( x | ~y ) ^ z )
 #define F4( x, y, z )   ( ( x & z ) | ( y & ~z ) )
 #define F5( x, y, z )   ( x ^ ( y | ~z ) )

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

 #define P( a, b, c, d, e, r, s, f, k )      \
     a += f( b, c, d ) + X[r] + k;           \
     a = S( a, s ) + e;                      \
     c = S( c, 10 );

 #define P2( a, b, c, d, e, r, s, rp, sp )   \
     P( a, b, c, d, e, r, s, F, K );         \
     P( a ## p, b ## p, c ## p, d ## p, e ## p, rp, sp, Fp, Kp );

 #define F   F1
 #define K   0x00000000
 #define Fp  F5
 #define Kp  0x50A28BE6
     P2( A, B, C, D, E,  0, 11,  5,  8 );
     P2( E, A, B, C, D,  1, 14, 14,  9 );
     P2( D, E, A, B, C,  2, 15,  7,  9 );
     P2( C, D, E, A, B,  3, 12,  0, 11 );
     P2( B, C, D, E, A,  4,  5,  9, 13 );
     P2( A, B, C, D, E,  5,  8,  2, 15 );
     P2( E, A, B, C, D,  6,  7, 11, 15 );
     P2( D, E, A, B, C,  7,  9,  4,  5 );
     P2( C, D, E, A, B,  8, 11, 13,  7 );
     P2( B, C, D, E, A,  9, 13,  6,  7 );
     P2( A, B, C, D, E, 10, 14, 15,  8 );
     P2( E, A, B, C, D, 11, 15,  8, 11 );
     P2( D, E, A, B, C, 12,  6,  1, 14 );
     P2( C, D, E, A, B, 13,  7, 10, 14 );
     P2( B, C, D, E, A, 14,  9,  3, 12 );
     P2( A, B, C, D, E, 15,  8, 12,  6 );
 #undef F
 #undef K
 #undef Fp
 #undef Kp

 #define F   F2
 #define K   0x5A827999
 #define Fp  F4
 #define Kp  0x5C4DD124
     P2( E, A, B, C, D,  7,  7,  6,  9 );
     P2( D, E, A, B, C,  4,  6, 11, 13 );
     P2( C, D, E, A, B, 13,  8,  3, 15 );
     P2( B, C, D, E, A,  1, 13,  7,  7 );
     P2( A, B, C, D, E, 10, 11,  0, 12 );
     P2( E, A, B, C, D,  6,  9, 13,  8 );
     P2( D, E, A, B, C, 15,  7,  5,  9 );
     P2( C, D, E, A, B,  3, 15, 10, 11 );
     P2( B, C, D, E, A, 12,  7, 14,  7 );
     P2( A, B, C, D, E,  0, 12, 15,  7 );
     P2( E, A, B, C, D,  9, 15,  8, 12 );
     P2( D, E, A, B, C,  5,  9, 12,  7 );
     P2( C, D, E, A, B,  2, 11,  4,  6 );
     P2( B, C, D, E, A, 14,  7,  9, 15 );
     P2( A, B, C, D, E, 11, 13,  1, 13 );
     P2( E, A, B, C, D,  8, 12,  2, 11 );
 #undef F
 #undef K
 #undef Fp
 #undef Kp

 #define F   F3
 #define K   0x6ED9EBA1
 #define Fp  F3
 #define Kp  0x6D703EF3
     P2( D, E, A, B, C,  3, 11, 15,  9 );
     P2( C, D, E, A, B, 10, 13,  5,  7 );
     P2( B, C, D, E, A, 14,  6,  1, 15 );
     P2( A, B, C, D, E,  4,  7,  3, 11 );
     P2( E, A, B, C, D,  9, 14,  7,  8 );
     P2( D, E, A, B, C, 15,  9, 14,  6 );
     P2( C, D, E, A, B,  8, 13,  6,  6 );
     P2( B, C, D, E, A,  1, 15,  9, 14 );
     P2( A, B, C, D, E,  2, 14, 11, 12 );
     P2( E, A, B, C, D,  7,  8,  8, 13 );
     P2( D, E, A, B, C,  0, 13, 12,  5 );
     P2( C, D, E, A, B,  6,  6,  2, 14 );
     P2( B, C, D, E, A, 13,  5, 10, 13 );
     P2( A, B, C, D, E, 11, 12,  0, 13 );
     P2( E, A, B, C, D,  5,  7,  4,  7 );
     P2( D, E, A, B, C, 12,  5, 13,  5 );
 #undef F
 #undef K
 #undef Fp
 #undef Kp

 #define F   F4
 #define K   0x8F1BBCDC
 #define Fp  F2
 #define Kp  0x7A6D76E9
     P2( C, D, E, A, B,  1, 11,  8, 15 );
     P2( B, C, D, E, A,  9, 12,  6,  5 );
     P2( A, B, C, D, E, 11, 14,  4,  8 );
     P2( E, A, B, C, D, 10, 15,  1, 11 );
     P2( D, E, A, B, C,  0, 14,  3, 14 );
     P2( C, D, E, A, B,  8, 15, 11, 14 );
     P2( B, C, D, E, A, 12,  9, 15,  6 );
     P2( A, B, C, D, E,  4,  8,  0, 14 );
     P2( E, A, B, C, D, 13,  9,  5,  6 );
     P2( D, E, A, B, C,  3, 14, 12,  9 );
     P2( C, D, E, A, B,  7,  5,  2, 12 );
     P2( B, C, D, E, A, 15,  6, 13,  9 );
     P2( A, B, C, D, E, 14,  8,  9, 12 );
     P2( E, A, B, C, D,  5,  6,  7,  5 );
     P2( D, E, A, B, C,  6,  5, 10, 15 );
     P2( C, D, E, A, B,  2, 12, 14,  8 );
 #undef F
 #undef K
 #undef Fp
 #undef Kp

 #define F   F5
 #define K   0xA953FD4E
 #define Fp  F1
 #define Kp  0x00000000
     P2( B, C, D, E, A,  4,  9, 12,  8 );
     P2( A, B, C, D, E,  0, 15, 15,  5 );
     P2( E, A, B, C, D,  5,  5, 10, 12 );
     P2( D, E, A, B, C,  9, 11,  4,  9 );
     P2( C, D, E, A, B,  7,  6,  1, 12 );
     P2( B, C, D, E, A, 12,  8,  5,  5 );
     P2( A, B, C, D, E,  2, 13,  8, 14 );
     P2( E, A, B, C, D, 10, 12,  7,  6 );
     P2( D, E, A, B, C, 14,  5,  6,  8 );
     P2( C, D, E, A, B,  1, 12,  2, 13 );
     P2( B, C, D, E, A,  3, 13, 13,  6 );
     P2( A, B, C, D, E,  8, 14, 14,  5 );
     P2( E, A, B, C, D, 11, 11,  0, 15 );
     P2( D, E, A, B, C,  6,  8,  3, 13 );
     P2( C, D, E, A, B, 15,  5,  9, 11 );
     P2( B, C, D, E, A, 13,  6, 11, 11 );
 #undef F
 #undef K
 #undef Fp
 #undef Kp

     C             = ctx->state[1] + C + Dp;
     ctx->state[1] = ctx->state[2] + D + Ep;
     ctx->state[2] = ctx->state[3] + E + Ap;
     ctx->state[3] = ctx->state[4] + A + Bp;
     ctx->state[4] = ctx->state[0] + B + Cp;
     ctx->state[0] = C;
 }

 /*
  * RIPEMD-160 process buffer
  */
 void ripemd160_update( ripemd160_context *ctx,
                        const unsigned char *input, size_t ilen )
 {
     size_t fill;
     uint32_t left;

     if( ilen == 0 )
         return;

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

     ctx->total[0] += (uint32_t) ilen;
     ctx->total[0] &= 0xFFFFFFFF;

     if( ctx->total[0] < (uint32_t) ilen )
         ctx->total[1]++;

     if( left && ilen >= fill )
     {
         memcpy( (void *) (ctx->buffer + left), input, fill );
         ripemd160_process( ctx, ctx->buffer );
         input += fill;
         ilen  -= fill;
         left = 0;
     }

     while( ilen >= 64 )
     {
         ripemd160_process( ctx, input );
         input += 64;
         ilen  -= 64;
     }

     if( ilen > 0 )
     {
         memcpy( (void *) (ctx->buffer + left), input, ilen );
     }
 }

 static const unsigned char ripemd160_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
 };

 /*
  * RIPEMD-160 final digest
  */
 void ripemd160_finish( ripemd160_context *ctx, unsigned char output[20] )
 {
     uint32_t last, padn;
     uint32_t high, low;
     unsigned char msglen[8];

     high = ( ctx->total[0] >> 29 )
          | ( ctx->total[1] <<  3 );
     low  = ( ctx->total[0] <<  3 );

     PUT_UINT32_LE( low,  msglen, 0 );
     PUT_UINT32_LE( high, msglen, 4 );

     last = ctx->total[0] & 0x3F;
     padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );

     ripemd160_update( ctx, ripemd160_padding, padn );
     ripemd160_update( ctx, msglen, 8 );

     PUT_UINT32_LE( ctx->state[0], output,  0 );
     PUT_UINT32_LE( ctx->state[1], output,  4 );
     PUT_UINT32_LE( ctx->state[2], output,  8 );
     PUT_UINT32_LE( ctx->state[3], output, 12 );
     PUT_UINT32_LE( ctx->state[4], output, 16 );
 }

 /*
  * output = RIPEMD-160( input buffer )
  */
 void ripemd160( const unsigned char *input, size_t ilen,
                 unsigned char output[20] )
 {
     ripemd160_context ctx;

     ripemd160_init( &ctx );
     ripemd160_starts( &ctx );
     ripemd160_update( &ctx, input, ilen );
     ripemd160_finish( &ctx, output );
     ripemd160_free( &ctx );
 }

 #if defined(POLARSSL_FS_IO)
 /*
  * output = RIPEMD-160( file contents )
  */
 int ripemd160_file( const char *path, unsigned char output[20] )
 {
     FILE *f;
     size_t n;
     ripemd160_context ctx;
     unsigned char buf[1024];

     if( ( f = fopen( path, "rb" ) ) == NULL )
         return( POLARSSL_ERR_RIPEMD160_FILE_IO_ERROR );

     ripemd160_init( &ctx );
     ripemd160_starts( &ctx );

     while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
         ripemd160_update( &ctx, buf, n );

     ripemd160_finish( &ctx, output );
     ripemd160_free( &ctx );

     if( ferror( f ) != 0 )
     {
         fclose( f );
         return( POLARSSL_ERR_RIPEMD160_FILE_IO_ERROR );
     }

     fclose( f );
     return( 0 );
 }
 #endif /* POLARSSL_FS_IO */

 /*
  * RIPEMD-160 HMAC context setup
  */
 void ripemd160_hmac_starts( ripemd160_context *ctx,
                             const unsigned char *key, size_t keylen )
 {
     size_t i;
     unsigned char sum[20];

     if( keylen > 64 )
     {
         ripemd160( key, keylen, sum );
         keylen = 20;
         key = sum;
     }

     memset( ctx->ipad, 0x36, 64 );
     memset( ctx->opad, 0x5C, 64 );

     for( i = 0; i < keylen; i++ )
     {
         ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] );
         ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] );
     }

     ripemd160_starts( ctx );
     ripemd160_update( ctx, ctx->ipad, 64 );

     polarssl_zeroize( sum, sizeof( sum ) );
 }

 /*
  * RIPEMD-160 HMAC process buffer
  */
 void ripemd160_hmac_update( ripemd160_context *ctx,
                             const unsigned char *input, size_t ilen )
 {
     ripemd160_update( ctx, input, ilen );
 }

 /*
  * RIPEMD-160 HMAC final digest
  */
 void ripemd160_hmac_finish( ripemd160_context *ctx, unsigned char output[20] )
 {
     unsigned char tmpbuf[20];

     ripemd160_finish( ctx, tmpbuf );
     ripemd160_starts( ctx );
     ripemd160_update( ctx, ctx->opad, 64 );
     ripemd160_update( ctx, tmpbuf, 20 );
     ripemd160_finish( ctx, output );

     polarssl_zeroize( tmpbuf, sizeof( tmpbuf ) );
 }

 /*
  * RIPEMD-160 HMAC context reset
  */
 void ripemd160_hmac_reset( ripemd160_context *ctx )
 {
     ripemd160_starts( ctx );
     ripemd160_update( ctx, ctx->ipad, 64 );
 }

 /*
  * output = HMAC-RIPEMD-160( hmac key, input buffer )
  */
 void ripemd160_hmac( const unsigned char *key, size_t keylen,
                      const unsigned char *input, size_t ilen,
                      unsigned char output[20] )
 {
     ripemd160_context ctx;

     ripemd160_init( &ctx );
     ripemd160_hmac_starts( &ctx, key, keylen );
     ripemd160_hmac_update( &ctx, input, ilen );
     ripemd160_hmac_finish( &ctx, output );
     ripemd160_free( &ctx );
 }


 #if defined(POLARSSL_SELF_TEST)
 /*
  * Test vectors from the RIPEMD-160 paper and
  * http://homes.esat.kuleuven.be/~bosselae/ripemd160.html#HMAC
  */
 #define TESTS   8
 #define KEYS    2
 static const char *ripemd160_test_input[TESTS] =
 {
     "",
     "a",
     "abc",
     "message digest",
     "abcdefghijklmnopqrstuvwxyz",
     "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
     "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
     "1234567890123456789012345678901234567890"
         "1234567890123456789012345678901234567890",
 };

 static const unsigned char ripemd160_test_md[TESTS][20] =
 {
     { 0x9c, 0x11, 0x85, 0xa5, 0xc5, 0xe9, 0xfc, 0x54, 0x61, 0x28,
       0x08, 0x97, 0x7e, 0xe8, 0xf5, 0x48, 0xb2, 0x25, 0x8d, 0x31 },
     { 0x0b, 0xdc, 0x9d, 0x2d, 0x25, 0x6b, 0x3e, 0xe9, 0xda, 0xae,
       0x34, 0x7b, 0xe6, 0xf4, 0xdc, 0x83, 0x5a, 0x46, 0x7f, 0xfe },
     { 0x8e, 0xb2, 0x08, 0xf7, 0xe0, 0x5d, 0x98, 0x7a, 0x9b, 0x04,
       0x4a, 0x8e, 0x98, 0xc6, 0xb0, 0x87, 0xf1, 0x5a, 0x0b, 0xfc },
     { 0x5d, 0x06, 0x89, 0xef, 0x49, 0xd2, 0xfa, 0xe5, 0x72, 0xb8,
       0x81, 0xb1, 0x23, 0xa8, 0x5f, 0xfa, 0x21, 0x59, 0x5f, 0x36 },
     { 0xf7, 0x1c, 0x27, 0x10, 0x9c, 0x69, 0x2c, 0x1b, 0x56, 0xbb,
       0xdc, 0xeb, 0x5b, 0x9d, 0x28, 0x65, 0xb3, 0x70, 0x8d, 0xbc },
     { 0x12, 0xa0, 0x53, 0x38, 0x4a, 0x9c, 0x0c, 0x88, 0xe4, 0x05,
       0xa0, 0x6c, 0x27, 0xdc, 0xf4, 0x9a, 0xda, 0x62, 0xeb, 0x2b },
     { 0xb0, 0xe2, 0x0b, 0x6e, 0x31, 0x16, 0x64, 0x02, 0x86, 0xed,
       0x3a, 0x87, 0xa5, 0x71, 0x30, 0x79, 0xb2, 0x1f, 0x51, 0x89 },
     { 0x9b, 0x75, 0x2e, 0x45, 0x57, 0x3d, 0x4b, 0x39, 0xf4, 0xdb,
       0xd3, 0x32, 0x3c, 0xab, 0x82, 0xbf, 0x63, 0x32, 0x6b, 0xfb },
 };

 static const unsigned char ripemd160_test_hmac[KEYS][TESTS][20] =
 {
   {
     { 0xcf, 0x38, 0x76, 0x77, 0xbf, 0xda, 0x84, 0x83, 0xe6, 0x3b,
       0x57, 0xe0, 0x6c, 0x3b, 0x5e, 0xcd, 0x8b, 0x7f, 0xc0, 0x55 },
     { 0x0d, 0x35, 0x1d, 0x71, 0xb7, 0x8e, 0x36, 0xdb, 0xb7, 0x39,
       0x1c, 0x81, 0x0a, 0x0d, 0x2b, 0x62, 0x40, 0xdd, 0xba, 0xfc },
     { 0xf7, 0xef, 0x28, 0x8c, 0xb1, 0xbb, 0xcc, 0x61, 0x60, 0xd7,
       0x65, 0x07, 0xe0, 0xa3, 0xbb, 0xf7, 0x12, 0xfb, 0x67, 0xd6 },
     { 0xf8, 0x36, 0x62, 0xcc, 0x8d, 0x33, 0x9c, 0x22, 0x7e, 0x60,
       0x0f, 0xcd, 0x63, 0x6c, 0x57, 0xd2, 0x57, 0x1b, 0x1c, 0x34 },
     { 0x84, 0x3d, 0x1c, 0x4e, 0xb8, 0x80, 0xac, 0x8a, 0xc0, 0xc9,
       0xc9, 0x56, 0x96, 0x50, 0x79, 0x57, 0xd0, 0x15, 0x5d, 0xdb },
     { 0x60, 0xf5, 0xef, 0x19, 0x8a, 0x2d, 0xd5, 0x74, 0x55, 0x45,
       0xc1, 0xf0, 0xc4, 0x7a, 0xa3, 0xfb, 0x57, 0x76, 0xf8, 0x81 },
     { 0xe4, 0x9c, 0x13, 0x6a, 0x9e, 0x56, 0x27, 0xe0, 0x68, 0x1b,
       0x80, 0x8a, 0x3b, 0x97, 0xe6, 0xa6, 0xe6, 0x61, 0xae, 0x79 },
     { 0x31, 0xbe, 0x3c, 0xc9, 0x8c, 0xee, 0x37, 0xb7, 0x9b, 0x06,
       0x19, 0xe3, 0xe1, 0xc2, 0xbe, 0x4f, 0x1a, 0xa5, 0x6e, 0x6c },
   },
   {
     { 0xfe, 0x69, 0xa6, 0x6c, 0x74, 0x23, 0xee, 0xa9, 0xc8, 0xfa,
       0x2e, 0xff, 0x8d, 0x9d, 0xaf, 0xb4, 0xf1, 0x7a, 0x62, 0xf5 },
     { 0x85, 0x74, 0x3e, 0x89, 0x9b, 0xc8, 0x2d, 0xbf, 0xa3, 0x6f,
       0xaa, 0xa7, 0xa2, 0x5b, 0x7c, 0xfd, 0x37, 0x24, 0x32, 0xcd },
     { 0x6e, 0x4a, 0xfd, 0x50, 0x1f, 0xa6, 0xb4, 0xa1, 0x82, 0x3c,
       0xa3, 0xb1, 0x0b, 0xd9, 0xaa, 0x0b, 0xa9, 0x7b, 0xa1, 0x82 },
     { 0x2e, 0x06, 0x6e, 0x62, 0x4b, 0xad, 0xb7, 0x6a, 0x18, 0x4c,
       0x8f, 0x90, 0xfb, 0xa0, 0x53, 0x33, 0x0e, 0x65, 0x0e, 0x92 },
     { 0x07, 0xe9, 0x42, 0xaa, 0x4e, 0x3c, 0xd7, 0xc0, 0x4d, 0xed,
       0xc1, 0xd4, 0x6e, 0x2e, 0x8c, 0xc4, 0xc7, 0x41, 0xb3, 0xd9 },
     { 0xb6, 0x58, 0x23, 0x18, 0xdd, 0xcf, 0xb6, 0x7a, 0x53, 0xa6,
       0x7d, 0x67, 0x6b, 0x8a, 0xd8, 0x69, 0xad, 0xed, 0x62, 0x9a },
     { 0xf1, 0xbe, 0x3e, 0xe8, 0x77, 0x70, 0x31, 0x40, 0xd3, 0x4f,
       0x97, 0xea, 0x1a, 0xb3, 0xa0, 0x7c, 0x14, 0x13, 0x33, 0xe2 },
     { 0x85, 0xf1, 0x64, 0x70, 0x3e, 0x61, 0xa6, 0x31, 0x31, 0xbe,
       0x7e, 0x45, 0x95, 0x8e, 0x07, 0x94, 0x12, 0x39, 0x04, 0xf9 },
   },
 };

 static const unsigned char ripemd160_test_key[KEYS][20] =
 {
     { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99,
       0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x01, 0x23, 0x45, 0x67 },
     { 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc,
       0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x00, 0x11, 0x22, 0x33 },
 };

 /*
  * Checkup routine
  */
 int ripemd160_self_test( int verbose )
 {
     int i, j;
     unsigned char output[20];

     memset( output, 0, sizeof output );

     for( i = 0; i < TESTS; i++ )
     {
         if( verbose != 0 )
             polarssl_printf( "  RIPEMD-160 test #%d: ", i + 1 );

         ripemd160( (const unsigned char *) ripemd160_test_input[i],
                    strlen( ripemd160_test_input[i] ),
                    output );

         if( memcmp( output, ripemd160_test_md[i], 20 ) != 0 )
         {
             if( verbose != 0 )
                 polarssl_printf( "failed\n" );

             return( 1 );
         }

         if( verbose != 0 )
             polarssl_printf( "passed\n" );

         for( j = 0; j < KEYS; j++ )
         {
             if( verbose != 0 )
                 polarssl_printf( "  HMAC-RIPEMD-160 test #%d, key #%d: ",
                                  i + 1, j + 1 );

             ripemd160_hmac( ripemd160_test_key[j], 20,
                             (const unsigned char *) ripemd160_test_input[i],
                             strlen( ripemd160_test_input[i] ),
                             output );

             if( memcmp( output, ripemd160_test_hmac[j][i], 20 ) != 0 )
             {
                 if( verbose != 0 )
                     polarssl_printf( "failed\n" );

                 return( 1 );
             }

             if( verbose != 0 )
                 polarssl_printf( "passed\n" );
         }

         if( verbose != 0 )
             polarssl_printf( "\n" );
     }

     return( 0 );
 }

 #endif /* POLARSSL_SELF_TEST */

 #endif /* POLARSSL_RIPEMD160_C */
	/*
	* RIPE MD-160 implementation
	*
	* Copyright (C) 2014-2014, Brainspark B.V.
	*
	* This file is part of PolarSSL (http://www.polarssl.org)
	* Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org>
	*
	* All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License along
	* with this program; if not, write to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
	*/

	/*
	* The RIPEMD-160 algorithm was designed by RIPE in 1996
	* http://homes.esat.kuleuven.be/~bosselae/ripemd160.html
	* http://ehash.iaik.tugraz.at/wiki/RIPEMD-160
	*/

	#if !defined(POLARSSL_CONFIG_FILE)
	#include "polarssl/config.h"
	#else
	#include POLARSSL_CONFIG_FILE
	#endif

	#if defined(POLARSSL_RIPEMD160_C)

	#include "polarssl/ripemd160.h"

	#if defined(POLARSSL_FS_IO) \|\| defined(POLARSSL_SELF_TEST)
	#include <stdio.h>
	#endif

	#if defined(POLARSSL_SELF_TEST)
	#include <string.h>
	#endif

	#if defined(POLARSSL_PLATFORM_C)
	#include "polarssl/platform.h"
	#else
	#define polarssl_printf printf
	#endif

	/*
	* 32-bit integer manipulation macros (little endian)
	*/
	#ifndef GET_UINT32_LE
	#define GET_UINT32_LE(n,b,i) \
	{ \
	(n) = ( (uint32_t) (b)[(i) ] ) \
	\| ( (uint32_t) (b)[(i) + 1] << 8 ) \
	\| ( (uint32_t) (b)[(i) + 2] << 16 ) \
	\| ( (uint32_t) (b)[(i) + 3] << 24 ); \
	}
	#endif

	#ifndef PUT_UINT32_LE
	#define PUT_UINT32_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

	/* Implementation that should never be optimized out by the compiler */
	static void polarssl_zeroize( void *v, size_t n ) {
	volatile unsigned char p = v; while( n-- ) p++ = 0;
	}

	void ripemd160_init( ripemd160_context *ctx )
	{
	memset( ctx, 0, sizeof( ripemd160_context ) );
	}

	void ripemd160_free( ripemd160_context *ctx )
	{
	if( ctx == NULL )
	return;

	polarssl_zeroize( ctx, sizeof( ripemd160_context ) );
	}

	/*
	* RIPEMD-160 context setup
	*/
	void ripemd160_starts( ripemd160_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;
	ctx->state[4] = 0xC3D2E1F0;
	}

	/*
	* Process one block
	*/
	void ripemd160_process( ripemd160_context *ctx, const unsigned char data[64] )
	{
	uint32_t A, B, C, D, E, Ap, Bp, Cp, Dp, Ep, X[16];

	GET_UINT32_LE( X[ 0], data, 0 );
	GET_UINT32_LE( X[ 1], data, 4 );
	GET_UINT32_LE( X[ 2], data, 8 );
	GET_UINT32_LE( X[ 3], data, 12 );
	GET_UINT32_LE( X[ 4], data, 16 );
	GET_UINT32_LE( X[ 5], data, 20 );
	GET_UINT32_LE( X[ 6], data, 24 );
	GET_UINT32_LE( X[ 7], data, 28 );
	GET_UINT32_LE( X[ 8], data, 32 );
	GET_UINT32_LE( X[ 9], data, 36 );
	GET_UINT32_LE( X[10], data, 40 );
	GET_UINT32_LE( X[11], data, 44 );
	GET_UINT32_LE( X[12], data, 48 );
	GET_UINT32_LE( X[13], data, 52 );
	GET_UINT32_LE( X[14], data, 56 );
	GET_UINT32_LE( X[15], data, 60 );

	A = Ap = ctx->state[0];
	B = Bp = ctx->state[1];
	C = Cp = ctx->state[2];
	D = Dp = ctx->state[3];
	E = Ep = ctx->state[4];

	#define F1( x, y, z ) ( x ^ y ^ z )
	#define F2( x, y, z ) ( ( x & y ) \| ( ~x & z ) )
	#define F3( x, y, z ) ( ( x \| ~y ) ^ z )
	#define F4( x, y, z ) ( ( x & z ) \| ( y & ~z ) )
	#define F5( x, y, z ) ( x ^ ( y \| ~z ) )

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

	#define P( a, b, c, d, e, r, s, f, k ) \
	a += f( b, c, d ) + X[r] + k; \
	a = S( a, s ) + e; \
	c = S( c, 10 );

	#define P2( a, b, c, d, e, r, s, rp, sp ) \
	P( a, b, c, d, e, r, s, F, K ); \
	P( a ## p, b ## p, c ## p, d ## p, e ## p, rp, sp, Fp, Kp );

	#define F F1
	#define K 0x00000000
	#define Fp F5
	#define Kp 0x50A28BE6
	P2( A, B, C, D, E, 0, 11, 5, 8 );
	P2( E, A, B, C, D, 1, 14, 14, 9 );
	P2( D, E, A, B, C, 2, 15, 7, 9 );
	P2( C, D, E, A, B, 3, 12, 0, 11 );
	P2( B, C, D, E, A, 4, 5, 9, 13 );
	P2( A, B, C, D, E, 5, 8, 2, 15 );
	P2( E, A, B, C, D, 6, 7, 11, 15 );
	P2( D, E, A, B, C, 7, 9, 4, 5 );
	P2( C, D, E, A, B, 8, 11, 13, 7 );
	P2( B, C, D, E, A, 9, 13, 6, 7 );
	P2( A, B, C, D, E, 10, 14, 15, 8 );
	P2( E, A, B, C, D, 11, 15, 8, 11 );
	P2( D, E, A, B, C, 12, 6, 1, 14 );
	P2( C, D, E, A, B, 13, 7, 10, 14 );
	P2( B, C, D, E, A, 14, 9, 3, 12 );
	P2( A, B, C, D, E, 15, 8, 12, 6 );
	#undef F
	#undef K
	#undef Fp
	#undef Kp

	#define F F2
	#define K 0x5A827999
	#define Fp F4
	#define Kp 0x5C4DD124
	P2( E, A, B, C, D, 7, 7, 6, 9 );
	P2( D, E, A, B, C, 4, 6, 11, 13 );
	P2( C, D, E, A, B, 13, 8, 3, 15 );
	P2( B, C, D, E, A, 1, 13, 7, 7 );
	P2( A, B, C, D, E, 10, 11, 0, 12 );
	P2( E, A, B, C, D, 6, 9, 13, 8 );
	P2( D, E, A, B, C, 15, 7, 5, 9 );
	P2( C, D, E, A, B, 3, 15, 10, 11 );
	P2( B, C, D, E, A, 12, 7, 14, 7 );
	P2( A, B, C, D, E, 0, 12, 15, 7 );
	P2( E, A, B, C, D, 9, 15, 8, 12 );
	P2( D, E, A, B, C, 5, 9, 12, 7 );
	P2( C, D, E, A, B, 2, 11, 4, 6 );
	P2( B, C, D, E, A, 14, 7, 9, 15 );
	P2( A, B, C, D, E, 11, 13, 1, 13 );
	P2( E, A, B, C, D, 8, 12, 2, 11 );
	#undef F
	#undef K
	#undef Fp
	#undef Kp

	#define F F3
	#define K 0x6ED9EBA1
	#define Fp F3
	#define Kp 0x6D703EF3
	P2( D, E, A, B, C, 3, 11, 15, 9 );
	P2( C, D, E, A, B, 10, 13, 5, 7 );
	P2( B, C, D, E, A, 14, 6, 1, 15 );
	P2( A, B, C, D, E, 4, 7, 3, 11 );
	P2( E, A, B, C, D, 9, 14, 7, 8 );
	P2( D, E, A, B, C, 15, 9, 14, 6 );
	P2( C, D, E, A, B, 8, 13, 6, 6 );
	P2( B, C, D, E, A, 1, 15, 9, 14 );
	P2( A, B, C, D, E, 2, 14, 11, 12 );
	P2( E, A, B, C, D, 7, 8, 8, 13 );
	P2( D, E, A, B, C, 0, 13, 12, 5 );
	P2( C, D, E, A, B, 6, 6, 2, 14 );
	P2( B, C, D, E, A, 13, 5, 10, 13 );
	P2( A, B, C, D, E, 11, 12, 0, 13 );
	P2( E, A, B, C, D, 5, 7, 4, 7 );
	P2( D, E, A, B, C, 12, 5, 13, 5 );
	#undef F
	#undef K
	#undef Fp
	#undef Kp

	#define F F4
	#define K 0x8F1BBCDC
	#define Fp F2
	#define Kp 0x7A6D76E9
	P2( C, D, E, A, B, 1, 11, 8, 15 );
	P2( B, C, D, E, A, 9, 12, 6, 5 );
	P2( A, B, C, D, E, 11, 14, 4, 8 );
	P2( E, A, B, C, D, 10, 15, 1, 11 );
	P2( D, E, A, B, C, 0, 14, 3, 14 );
	P2( C, D, E, A, B, 8, 15, 11, 14 );
	P2( B, C, D, E, A, 12, 9, 15, 6 );
	P2( A, B, C, D, E, 4, 8, 0, 14 );
	P2( E, A, B, C, D, 13, 9, 5, 6 );
	P2( D, E, A, B, C, 3, 14, 12, 9 );
	P2( C, D, E, A, B, 7, 5, 2, 12 );
	P2( B, C, D, E, A, 15, 6, 13, 9 );
	P2( A, B, C, D, E, 14, 8, 9, 12 );
	P2( E, A, B, C, D, 5, 6, 7, 5 );
	P2( D, E, A, B, C, 6, 5, 10, 15 );
	P2( C, D, E, A, B, 2, 12, 14, 8 );
	#undef F
	#undef K
	#undef Fp
	#undef Kp

	#define F F5
	#define K 0xA953FD4E
	#define Fp F1
	#define Kp 0x00000000
	P2( B, C, D, E, A, 4, 9, 12, 8 );
	P2( A, B, C, D, E, 0, 15, 15, 5 );
	P2( E, A, B, C, D, 5, 5, 10, 12 );
	P2( D, E, A, B, C, 9, 11, 4, 9 );
	P2( C, D, E, A, B, 7, 6, 1, 12 );
	P2( B, C, D, E, A, 12, 8, 5, 5 );
	P2( A, B, C, D, E, 2, 13, 8, 14 );
	P2( E, A, B, C, D, 10, 12, 7, 6 );
	P2( D, E, A, B, C, 14, 5, 6, 8 );
	P2( C, D, E, A, B, 1, 12, 2, 13 );
	P2( B, C, D, E, A, 3, 13, 13, 6 );
	P2( A, B, C, D, E, 8, 14, 14, 5 );
	P2( E, A, B, C, D, 11, 11, 0, 15 );
	P2( D, E, A, B, C, 6, 8, 3, 13 );
	P2( C, D, E, A, B, 15, 5, 9, 11 );
	P2( B, C, D, E, A, 13, 6, 11, 11 );
	#undef F
	#undef K
	#undef Fp
	#undef Kp

	C = ctx->state[1] + C + Dp;
	ctx->state[1] = ctx->state[2] + D + Ep;
	ctx->state[2] = ctx->state[3] + E + Ap;
	ctx->state[3] = ctx->state[4] + A + Bp;
	ctx->state[4] = ctx->state[0] + B + Cp;
	ctx->state[0] = C;
	}

	/*
	* RIPEMD-160 process buffer
	*/
	void ripemd160_update( ripemd160_context *ctx,
	const unsigned char *input, size_t ilen )
	{
	size_t fill;
	uint32_t left;

	if( ilen == 0 )
	return;

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

	ctx->total[0] += (uint32_t) ilen;
	ctx->total[0] &= 0xFFFFFFFF;

	if( ctx->total[0] < (uint32_t) ilen )
	ctx->total[1]++;

	if( left && ilen >= fill )
	{
	memcpy( (void *) (ctx->buffer + left), input, fill );
	ripemd160_process( ctx, ctx->buffer );
	input += fill;
	ilen -= fill;
	left = 0;
	}

	while( ilen >= 64 )
	{
	ripemd160_process( ctx, input );
	input += 64;
	ilen -= 64;
	}

	if( ilen > 0 )
	{
	memcpy( (void *) (ctx->buffer + left), input, ilen );
	}
	}

	static const unsigned char ripemd160_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
	};

	/*
	* RIPEMD-160 final digest
	*/
	void ripemd160_finish( ripemd160_context *ctx, unsigned char output[20] )
	{
	uint32_t last, padn;
	uint32_t high, low;
	unsigned char msglen[8];

	high = ( ctx->total[0] >> 29 )
	\| ( ctx->total[1] << 3 );
	low = ( ctx->total[0] << 3 );

	PUT_UINT32_LE( low, msglen, 0 );
	PUT_UINT32_LE( high, msglen, 4 );

	last = ctx->total[0] & 0x3F;
	padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last );

	ripemd160_update( ctx, ripemd160_padding, padn );
	ripemd160_update( ctx, msglen, 8 );

	PUT_UINT32_LE( ctx->state[0], output, 0 );
	PUT_UINT32_LE( ctx->state[1], output, 4 );
	PUT_UINT32_LE( ctx->state[2], output, 8 );
	PUT_UINT32_LE( ctx->state[3], output, 12 );
	PUT_UINT32_LE( ctx->state[4], output, 16 );
	}

	/*
	* output = RIPEMD-160( input buffer )
	*/
	void ripemd160( const unsigned char *input, size_t ilen,
	unsigned char output[20] )
	{
	ripemd160_context ctx;

	ripemd160_init( &ctx );
	ripemd160_starts( &ctx );
	ripemd160_update( &ctx, input, ilen );
	ripemd160_finish( &ctx, output );
	ripemd160_free( &ctx );
	}

	#if defined(POLARSSL_FS_IO)
	/*
	* output = RIPEMD-160( file contents )
	*/
	int ripemd160_file( const char *path, unsigned char output[20] )
	{
	FILE *f;
	size_t n;
	ripemd160_context ctx;
	unsigned char buf[1024];

	if( ( f = fopen( path, "rb" ) ) == NULL )
	return( POLARSSL_ERR_RIPEMD160_FILE_IO_ERROR );

	ripemd160_init( &ctx );
	ripemd160_starts( &ctx );

	while( ( n = fread( buf, 1, sizeof( buf ), f ) ) > 0 )
	ripemd160_update( &ctx, buf, n );

	ripemd160_finish( &ctx, output );
	ripemd160_free( &ctx );

	if( ferror( f ) != 0 )
	{
	fclose( f );
	return( POLARSSL_ERR_RIPEMD160_FILE_IO_ERROR );
	}

	fclose( f );
	return( 0 );
	}
	#endif /* POLARSSL_FS_IO */

	/*
	* RIPEMD-160 HMAC context setup
	*/
	void ripemd160_hmac_starts( ripemd160_context *ctx,
	const unsigned char *key, size_t keylen )
	{
	size_t i;
	unsigned char sum[20];

	if( keylen > 64 )
	{
	ripemd160( key, keylen, sum );
	keylen = 20;
	key = sum;
	}

	memset( ctx->ipad, 0x36, 64 );
	memset( ctx->opad, 0x5C, 64 );

	for( i = 0; i < keylen; i++ )
	{
	ctx->ipad[i] = (unsigned char)( ctx->ipad[i] ^ key[i] );
	ctx->opad[i] = (unsigned char)( ctx->opad[i] ^ key[i] );
	}

	ripemd160_starts( ctx );
	ripemd160_update( ctx, ctx->ipad, 64 );

	polarssl_zeroize( sum, sizeof( sum ) );
	}

	/*
	* RIPEMD-160 HMAC process buffer
	*/
	void ripemd160_hmac_update( ripemd160_context *ctx,
	const unsigned char *input, size_t ilen )
	{
	ripemd160_update( ctx, input, ilen );
	}

	/*
	* RIPEMD-160 HMAC final digest
	*/
	void ripemd160_hmac_finish( ripemd160_context *ctx, unsigned char output[20] )
	{
	unsigned char tmpbuf[20];

	ripemd160_finish( ctx, tmpbuf );
	ripemd160_starts( ctx );
	ripemd160_update( ctx, ctx->opad, 64 );
	ripemd160_update( ctx, tmpbuf, 20 );
	ripemd160_finish( ctx, output );

	polarssl_zeroize( tmpbuf, sizeof( tmpbuf ) );
	}

	/*
	* RIPEMD-160 HMAC context reset
	*/
	void ripemd160_hmac_reset( ripemd160_context *ctx )
	{
	ripemd160_starts( ctx );
	ripemd160_update( ctx, ctx->ipad, 64 );
	}

	/*
	* output = HMAC-RIPEMD-160( hmac key, input buffer )
	*/
	void ripemd160_hmac( const unsigned char *key, size_t keylen,
	const unsigned char *input, size_t ilen,
	unsigned char output[20] )
	{
	ripemd160_context ctx;

	ripemd160_init( &ctx );
	ripemd160_hmac_starts( &ctx, key, keylen );
	ripemd160_hmac_update( &ctx, input, ilen );
	ripemd160_hmac_finish( &ctx, output );
	ripemd160_free( &ctx );
	}


	#if defined(POLARSSL_SELF_TEST)
	/*
	* Test vectors from the RIPEMD-160 paper and
	* http://homes.esat.kuleuven.be/~bosselae/ripemd160.html#HMAC
	*/
	#define TESTS 8
	#define KEYS 2
	static const char *ripemd160_test_input[TESTS] =
	{
	"",
	"a",
	"abc",
	"message digest",
	"abcdefghijklmnopqrstuvwxyz",
	"abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq",
	"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
	"1234567890123456789012345678901234567890"
	"1234567890123456789012345678901234567890",
	};

	static const unsigned char ripemd160_test_md[TESTS][20] =
	{
	{ 0x9c, 0x11, 0x85, 0xa5, 0xc5, 0xe9, 0xfc, 0x54, 0x61, 0x28,
	0x08, 0x97, 0x7e, 0xe8, 0xf5, 0x48, 0xb2, 0x25, 0x8d, 0x31 },
	{ 0x0b, 0xdc, 0x9d, 0x2d, 0x25, 0x6b, 0x3e, 0xe9, 0xda, 0xae,
	0x34, 0x7b, 0xe6, 0xf4, 0xdc, 0x83, 0x5a, 0x46, 0x7f, 0xfe },
	{ 0x8e, 0xb2, 0x08, 0xf7, 0xe0, 0x5d, 0x98, 0x7a, 0x9b, 0x04,
	0x4a, 0x8e, 0x98, 0xc6, 0xb0, 0x87, 0xf1, 0x5a, 0x0b, 0xfc },
	{ 0x5d, 0x06, 0x89, 0xef, 0x49, 0xd2, 0xfa, 0xe5, 0x72, 0xb8,
	0x81, 0xb1, 0x23, 0xa8, 0x5f, 0xfa, 0x21, 0x59, 0x5f, 0x36 },
	{ 0xf7, 0x1c, 0x27, 0x10, 0x9c, 0x69, 0x2c, 0x1b, 0x56, 0xbb,
	0xdc, 0xeb, 0x5b, 0x9d, 0x28, 0x65, 0xb3, 0x70, 0x8d, 0xbc },
	{ 0x12, 0xa0, 0x53, 0x38, 0x4a, 0x9c, 0x0c, 0x88, 0xe4, 0x05,
	0xa0, 0x6c, 0x27, 0xdc, 0xf4, 0x9a, 0xda, 0x62, 0xeb, 0x2b },
	{ 0xb0, 0xe2, 0x0b, 0x6e, 0x31, 0x16, 0x64, 0x02, 0x86, 0xed,
	0x3a, 0x87, 0xa5, 0x71, 0x30, 0x79, 0xb2, 0x1f, 0x51, 0x89 },
	{ 0x9b, 0x75, 0x2e, 0x45, 0x57, 0x3d, 0x4b, 0x39, 0xf4, 0xdb,
	0xd3, 0x32, 0x3c, 0xab, 0x82, 0xbf, 0x63, 0x32, 0x6b, 0xfb },
	};

	static const unsigned char ripemd160_test_hmac[KEYS][TESTS][20] =
	{
	{
	{ 0xcf, 0x38, 0x76, 0x77, 0xbf, 0xda, 0x84, 0x83, 0xe6, 0x3b,
	0x57, 0xe0, 0x6c, 0x3b, 0x5e, 0xcd, 0x8b, 0x7f, 0xc0, 0x55 },
	{ 0x0d, 0x35, 0x1d, 0x71, 0xb7, 0x8e, 0x36, 0xdb, 0xb7, 0x39,
	0x1c, 0x81, 0x0a, 0x0d, 0x2b, 0x62, 0x40, 0xdd, 0xba, 0xfc },
	{ 0xf7, 0xef, 0x28, 0x8c, 0xb1, 0xbb, 0xcc, 0x61, 0x60, 0xd7,
	0x65, 0x07, 0xe0, 0xa3, 0xbb, 0xf7, 0x12, 0xfb, 0x67, 0xd6 },
	{ 0xf8, 0x36, 0x62, 0xcc, 0x8d, 0x33, 0x9c, 0x22, 0x7e, 0x60,
	0x0f, 0xcd, 0x63, 0x6c, 0x57, 0xd2, 0x57, 0x1b, 0x1c, 0x34 },
	{ 0x84, 0x3d, 0x1c, 0x4e, 0xb8, 0x80, 0xac, 0x8a, 0xc0, 0xc9,
	0xc9, 0x56, 0x96, 0x50, 0x79, 0x57, 0xd0, 0x15, 0x5d, 0xdb },
	{ 0x60, 0xf5, 0xef, 0x19, 0x8a, 0x2d, 0xd5, 0x74, 0x55, 0x45,
	0xc1, 0xf0, 0xc4, 0x7a, 0xa3, 0xfb, 0x57, 0x76, 0xf8, 0x81 },
	{ 0xe4, 0x9c, 0x13, 0x6a, 0x9e, 0x56, 0x27, 0xe0, 0x68, 0x1b,
	0x80, 0x8a, 0x3b, 0x97, 0xe6, 0xa6, 0xe6, 0x61, 0xae, 0x79 },
	{ 0x31, 0xbe, 0x3c, 0xc9, 0x8c, 0xee, 0x37, 0xb7, 0x9b, 0x06,
	0x19, 0xe3, 0xe1, 0xc2, 0xbe, 0x4f, 0x1a, 0xa5, 0x6e, 0x6c },
	},
	{
	{ 0xfe, 0x69, 0xa6, 0x6c, 0x74, 0x23, 0xee, 0xa9, 0xc8, 0xfa,
	0x2e, 0xff, 0x8d, 0x9d, 0xaf, 0xb4, 0xf1, 0x7a, 0x62, 0xf5 },
	{ 0x85, 0x74, 0x3e, 0x89, 0x9b, 0xc8, 0x2d, 0xbf, 0xa3, 0x6f,
	0xaa, 0xa7, 0xa2, 0x5b, 0x7c, 0xfd, 0x37, 0x24, 0x32, 0xcd },
	{ 0x6e, 0x4a, 0xfd, 0x50, 0x1f, 0xa6, 0xb4, 0xa1, 0x82, 0x3c,
	0xa3, 0xb1, 0x0b, 0xd9, 0xaa, 0x0b, 0xa9, 0x7b, 0xa1, 0x82 },
	{ 0x2e, 0x06, 0x6e, 0x62, 0x4b, 0xad, 0xb7, 0x6a, 0x18, 0x4c,
	0x8f, 0x90, 0xfb, 0xa0, 0x53, 0x33, 0x0e, 0x65, 0x0e, 0x92 },
	{ 0x07, 0xe9, 0x42, 0xaa, 0x4e, 0x3c, 0xd7, 0xc0, 0x4d, 0xed,
	0xc1, 0xd4, 0x6e, 0x2e, 0x8c, 0xc4, 0xc7, 0x41, 0xb3, 0xd9 },
	{ 0xb6, 0x58, 0x23, 0x18, 0xdd, 0xcf, 0xb6, 0x7a, 0x53, 0xa6,
	0x7d, 0x67, 0x6b, 0x8a, 0xd8, 0x69, 0xad, 0xed, 0x62, 0x9a },
	{ 0xf1, 0xbe, 0x3e, 0xe8, 0x77, 0x70, 0x31, 0x40, 0xd3, 0x4f,
	0x97, 0xea, 0x1a, 0xb3, 0xa0, 0x7c, 0x14, 0x13, 0x33, 0xe2 },
	{ 0x85, 0xf1, 0x64, 0x70, 0x3e, 0x61, 0xa6, 0x31, 0x31, 0xbe,
	0x7e, 0x45, 0x95, 0x8e, 0x07, 0x94, 0x12, 0x39, 0x04, 0xf9 },
	},
	};

	static const unsigned char ripemd160_test_key[KEYS][20] =
	{
	{ 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99,
	0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x01, 0x23, 0x45, 0x67 },
	{ 0x01, 0x23, 0x45, 0x67, 0x89, 0xab, 0xcd, 0xef, 0xfe, 0xdc,
	0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x00, 0x11, 0x22, 0x33 },
	};

	/*
	* Checkup routine
	*/
	int ripemd160_self_test( int verbose )
	{
	int i, j;
	unsigned char output[20];

	memset( output, 0, sizeof output );

	for( i = 0; i < TESTS; i++ )
	{
	if( verbose != 0 )
	polarssl_printf( " RIPEMD-160 test #%d: ", i + 1 );

	ripemd160( (const unsigned char *) ripemd160_test_input[i],
	strlen( ripemd160_test_input[i] ),
	output );

	if( memcmp( output, ripemd160_test_md[i], 20 ) != 0 )
	{
	if( verbose != 0 )
	polarssl_printf( "failed\n" );

	return( 1 );
	}

	if( verbose != 0 )
	polarssl_printf( "passed\n" );

	for( j = 0; j < KEYS; j++ )
	{
	if( verbose != 0 )
	polarssl_printf( " HMAC-RIPEMD-160 test #%d, key #%d: ",
	i + 1, j + 1 );

	ripemd160_hmac( ripemd160_test_key[j], 20,
	(const unsigned char *) ripemd160_test_input[i],
	strlen( ripemd160_test_input[i] ),
	output );

	if( memcmp( output, ripemd160_test_hmac[j][i], 20 ) != 0 )
	{
	if( verbose != 0 )
	polarssl_printf( "failed\n" );

	return( 1 );
	}

	if( verbose != 0 )
	polarssl_printf( "passed\n" );
	}

	if( verbose != 0 )
	polarssl_printf( "\n" );
	}

	return( 0 );
	}

	#endif /* POLARSSL_SELF_TEST */

	#endif /* POLARSSL_RIPEMD160_C */