reactos/dll/3rdparty/mbedtls/md2.c

   1 /*
   2  *  RFC 1115/1319 compliant MD2 implementation
   3  *
   4  *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
   5  *  SPDX-License-Identifier: GPL-2.0
   6  *
   7  *  This program is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2 of the License, or
  10  *  (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License along
  18  *  with this program; if not, write to the Free Software Foundation, Inc.,
  19  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  *  This file is part of mbed TLS (https://tls.mbed.org)
  22  */
  23 /*
  24  *  The MD2 algorithm was designed by Ron Rivest in 1989.
  25  *
  26  *  http://www.ietf.org/rfc/rfc1115.txt
  27  *  http://www.ietf.org/rfc/rfc1319.txt
  28  */
  29
  30 #if !defined(MBEDTLS_CONFIG_FILE)
  31 #include "mbedtls/config.h"
  32 #else
  33 #include MBEDTLS_CONFIG_FILE
  34 #endif
  35
  36 #if defined(MBEDTLS_MD2_C)
  37
  38 #include "mbedtls/md2.h"
  39
  40 #include <string.h>
  41
  42 #if defined(MBEDTLS_SELF_TEST)
  43 #if defined(MBEDTLS_PLATFORM_C)
  44 #include "mbedtls/platform.h"
  45 #else
  46 #include <stdio.h>
  47 #define mbedtls_printf printf
  48 #endif /* MBEDTLS_PLATFORM_C */
  49 #endif /* MBEDTLS_SELF_TEST */
  50
  51 #if !defined(MBEDTLS_MD2_ALT)
  52
  53 /* Implementation that should never be optimized out by the compiler */
  54 static void mbedtls_zeroize( void *v, size_t n ) {
  55     volatile unsigned char *p = v; while( n-- ) *p++ = 0;
  56 }
  57
  58 static const unsigned char PI_SUBST[256] =
  59 {
  60     0x29, 0x2E, 0x43, 0xC9, 0xA2, 0xD8, 0x7C, 0x01, 0x3D, 0x36,
  61     0x54, 0xA1, 0xEC, 0xF0, 0x06, 0x13, 0x62, 0xA7, 0x05, 0xF3,
  62     0xC0, 0xC7, 0x73, 0x8C, 0x98, 0x93, 0x2B, 0xD9, 0xBC, 0x4C,
  63     0x82, 0xCA, 0x1E, 0x9B, 0x57, 0x3C, 0xFD, 0xD4, 0xE0, 0x16,
  64     0x67, 0x42, 0x6F, 0x18, 0x8A, 0x17, 0xE5, 0x12, 0xBE, 0x4E,
  65     0xC4, 0xD6, 0xDA, 0x9E, 0xDE, 0x49, 0xA0, 0xFB, 0xF5, 0x8E,
  66     0xBB, 0x2F, 0xEE, 0x7A, 0xA9, 0x68, 0x79, 0x91, 0x15, 0xB2,
  67     0x07, 0x3F, 0x94, 0xC2, 0x10, 0x89, 0x0B, 0x22, 0x5F, 0x21,
  68     0x80, 0x7F, 0x5D, 0x9A, 0x5A, 0x90, 0x32, 0x27, 0x35, 0x3E,
  69     0xCC, 0xE7, 0xBF, 0xF7, 0x97, 0x03, 0xFF, 0x19, 0x30, 0xB3,
  70     0x48, 0xA5, 0xB5, 0xD1, 0xD7, 0x5E, 0x92, 0x2A, 0xAC, 0x56,
  71     0xAA, 0xC6, 0x4F, 0xB8, 0x38, 0xD2, 0x96, 0xA4, 0x7D, 0xB6,
  72     0x76, 0xFC, 0x6B, 0xE2, 0x9C, 0x74, 0x04, 0xF1, 0x45, 0x9D,
  73     0x70, 0x59, 0x64, 0x71, 0x87, 0x20, 0x86, 0x5B, 0xCF, 0x65,
  74     0xE6, 0x2D, 0xA8, 0x02, 0x1B, 0x60, 0x25, 0xAD, 0xAE, 0xB0,
  75     0xB9, 0xF6, 0x1C, 0x46, 0x61, 0x69, 0x34, 0x40, 0x7E, 0x0F,
  76     0x55, 0x47, 0xA3, 0x23, 0xDD, 0x51, 0xAF, 0x3A, 0xC3, 0x5C,
  77     0xF9, 0xCE, 0xBA, 0xC5, 0xEA, 0x26, 0x2C, 0x53, 0x0D, 0x6E,
  78     0x85, 0x28, 0x84, 0x09, 0xD3, 0xDF, 0xCD, 0xF4, 0x41, 0x81,
  79     0x4D, 0x52, 0x6A, 0xDC, 0x37, 0xC8, 0x6C, 0xC1, 0xAB, 0xFA,
  80     0x24, 0xE1, 0x7B, 0x08, 0x0C, 0xBD, 0xB1, 0x4A, 0x78, 0x88,
  81     0x95, 0x8B, 0xE3, 0x63, 0xE8, 0x6D, 0xE9, 0xCB, 0xD5, 0xFE,
  82     0x3B, 0x00, 0x1D, 0x39, 0xF2, 0xEF, 0xB7, 0x0E, 0x66, 0x58,
  83     0xD0, 0xE4, 0xA6, 0x77, 0x72, 0xF8, 0xEB, 0x75, 0x4B, 0x0A,
  84     0x31, 0x44, 0x50, 0xB4, 0x8F, 0xED, 0x1F, 0x1A, 0xDB, 0x99,
  85     0x8D, 0x33, 0x9F, 0x11, 0x83, 0x14
  86 };
  87
  88 void mbedtls_md2_init( mbedtls_md2_context *ctx )
  89 {
  90     memset( ctx, 0, sizeof( mbedtls_md2_context ) );
  91 }
  92
  93 void mbedtls_md2_free( mbedtls_md2_context *ctx )
  94 {
  95     if( ctx == NULL )
  96         return;
  97
  98     mbedtls_zeroize( ctx, sizeof( mbedtls_md2_context ) );
  99 }
 100
 101 void mbedtls_md2_clone( mbedtls_md2_context *dst,
 102                         const mbedtls_md2_context *src )
 103 {
 104     *dst = *src;
 105 }
 106
 107 /*
 108  * MD2 context setup
 109  */
 110 void mbedtls_md2_starts( mbedtls_md2_context *ctx )
 111 {
 112     memset( ctx->cksum, 0, 16 );
 113     memset( ctx->state, 0, 46 );
 114     memset( ctx->buffer, 0, 16 );
 115     ctx->left = 0;
 116 }
 117
 118 #if !defined(MBEDTLS_MD2_PROCESS_ALT)
 119 void mbedtls_md2_process( mbedtls_md2_context *ctx )
 120 {
 121     int i, j;
 122     unsigned char t = 0;
 123
 124     for( i = 0; i < 16; i++ )
 125     {
 126         ctx->state[i + 16] = ctx->buffer[i];
 127         ctx->state[i + 32] =
 128             (unsigned char)( ctx->buffer[i] ^ ctx->state[i]);
 129     }
 130
 131     for( i = 0; i < 18; i++ )
 132     {
 133         for( j = 0; j < 48; j++ )
 134         {
 135             ctx->state[j] = (unsigned char)
 136                ( ctx->state[j] ^ PI_SUBST[t] );
 137             t  = ctx->state[j];
 138         }
 139
 140         t = (unsigned char)( t + i );
 141     }
 142
 143     t = ctx->cksum[15];
 144
 145     for( i = 0; i < 16; i++ )
 146     {
 147         ctx->cksum[i] = (unsigned char)
 148            ( ctx->cksum[i] ^ PI_SUBST[ctx->buffer[i] ^ t] );
 149         t  = ctx->cksum[i];
 150     }
 151 }
 152 #endif /* !MBEDTLS_MD2_PROCESS_ALT */
 153
 154 /*
 155  * MD2 process buffer
 156  */
 157 void mbedtls_md2_update( mbedtls_md2_context *ctx, const unsigned char *input, size_t ilen )
 158 {
 159     size_t fill;
 160
 161     while( ilen > 0 )
 162     {
 163         if( ilen > 16 - ctx->left )
 164             fill = 16 - ctx->left;
 165         else
 166             fill = ilen;
 167
 168         memcpy( ctx->buffer + ctx->left, input, fill );
 169
 170         ctx->left += fill;
 171         input += fill;
 172         ilen  -= fill;
 173
 174         if( ctx->left == 16 )
 175         {
 176             ctx->left = 0;
 177             mbedtls_md2_process( ctx );
 178         }
 179     }
 180 }
 181
 182 /*
 183  * MD2 final digest
 184  */
 185 void mbedtls_md2_finish( mbedtls_md2_context *ctx, unsigned char output[16] )
 186 {
 187     size_t i;
 188     unsigned char x;
 189
 190     x = (unsigned char)( 16 - ctx->left );
 191
 192     for( i = ctx->left; i < 16; i++ )
 193         ctx->buffer[i] = x;
 194
 195     mbedtls_md2_process( ctx );
 196
 197     memcpy( ctx->buffer, ctx->cksum, 16 );
 198     mbedtls_md2_process( ctx );
 199
 200     memcpy( output, ctx->state, 16 );
 201 }
 202
 203 #endif /* !MBEDTLS_MD2_ALT */
 204
 205 /*
 206  * output = MD2( input buffer )
 207  */
 208 void mbedtls_md2( const unsigned char *input, size_t ilen, unsigned char output[16] )
 209 {
 210     mbedtls_md2_context ctx;
 211
 212     mbedtls_md2_init( &ctx );
 213     mbedtls_md2_starts( &ctx );
 214     mbedtls_md2_update( &ctx, input, ilen );
 215     mbedtls_md2_finish( &ctx, output );
 216     mbedtls_md2_free( &ctx );
 217 }
 218
 219 #if defined(MBEDTLS_SELF_TEST)
 220
 221 /*
 222  * RFC 1319 test vectors
 223  */
 224 static const char md2_test_str[7][81] =
 225 {
 226     { "" },
 227     { "a" },
 228     { "abc" },
 229     { "message digest" },
 230     { "abcdefghijklmnopqrstuvwxyz" },
 231     { "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789" },
 232     { "12345678901234567890123456789012345678901234567890123456789012" \
 233       "345678901234567890" }
 234 };
 235
 236 static const unsigned char md2_test_sum[7][16] =
 237 {
 238     { 0x83, 0x50, 0xE5, 0xA3, 0xE2, 0x4C, 0x15, 0x3D,
 239       0xF2, 0x27, 0x5C, 0x9F, 0x80, 0x69, 0x27, 0x73 },
 240     { 0x32, 0xEC, 0x01, 0xEC, 0x4A, 0x6D, 0xAC, 0x72,
 241       0xC0, 0xAB, 0x96, 0xFB, 0x34, 0xC0, 0xB5, 0xD1 },
 242     { 0xDA, 0x85, 0x3B, 0x0D, 0x3F, 0x88, 0xD9, 0x9B,
 243       0x30, 0x28, 0x3A, 0x69, 0xE6, 0xDE, 0xD6, 0xBB },
 244     { 0xAB, 0x4F, 0x49, 0x6B, 0xFB, 0x2A, 0x53, 0x0B,
 245       0x21, 0x9F, 0xF3, 0x30, 0x31, 0xFE, 0x06, 0xB0 },
 246     { 0x4E, 0x8D, 0xDF, 0xF3, 0x65, 0x02, 0x92, 0xAB,
 247       0x5A, 0x41, 0x08, 0xC3, 0xAA, 0x47, 0x94, 0x0B },
 248     { 0xDA, 0x33, 0xDE, 0xF2, 0xA4, 0x2D, 0xF1, 0x39,
 249       0x75, 0x35, 0x28, 0x46, 0xC3, 0x03, 0x38, 0xCD },
 250     { 0xD5, 0x97, 0x6F, 0x79, 0xD8, 0x3D, 0x3A, 0x0D,
 251       0xC9, 0x80, 0x6C, 0x3C, 0x66, 0xF3, 0xEF, 0xD8 }
 252 };
 253
 254 /*
 255  * Checkup routine
 256  */
 257 int mbedtls_md2_self_test( int verbose )
 258 {
 259     int i;
 260     unsigned char md2sum[16];
 261
 262     for( i = 0; i < 7; i++ )
 263     {
 264         if( verbose != 0 )
 265             mbedtls_printf( "  MD2 test #%d: ", i + 1 );
 266
 267         mbedtls_md2( (unsigned char *) md2_test_str[i],
 268              strlen( md2_test_str[i] ), md2sum );
 269
 270         if( memcmp( md2sum, md2_test_sum[i], 16 ) != 0 )
 271         {
 272             if( verbose != 0 )
 273                 mbedtls_printf( "failed\n" );
 274
 275             return( 1 );
 276         }
 277
 278         if( verbose != 0 )
 279             mbedtls_printf( "passed\n" );
 280     }
 281
 282     if( verbose != 0 )
 283         mbedtls_printf( "\n" );
 284
 285     return( 0 );
 286 }
 287
 288 #endif /* MBEDTLS_SELF_TEST */
 289
 290 #endif /* MBEDTLS_MD2_C */