tanjent@gmail.com | f3b7897 | 2012-03-01 03:38:55 +0000 | [diff] [blame] | 1 | #include <memory.h> |
| 2 | #include "Types.h" |
| 3 | |
| 4 | // "Derived from the RSA Data Security, Inc. MD5 Message Digest Algorithm" |
| 5 | |
| 6 | /** |
| 7 | * \brief MD5 context structure |
| 8 | */ |
| 9 | typedef struct |
| 10 | { |
| 11 | unsigned long total[2]; /*!< number of bytes processed */ |
| 12 | unsigned long state[4]; /*!< intermediate digest state */ |
| 13 | unsigned char buffer[64]; /*!< data block being processed */ |
| 14 | |
| 15 | unsigned char ipad[64]; /*!< HMAC: inner padding */ |
| 16 | unsigned char opad[64]; /*!< HMAC: outer padding */ |
| 17 | } |
| 18 | md5_context; |
| 19 | |
| 20 | /** |
| 21 | * \brief MD5 context setup |
| 22 | * |
| 23 | * \param ctx context to be initialized |
| 24 | */ |
| 25 | void md5_starts( md5_context *ctx ); |
| 26 | |
| 27 | /** |
| 28 | * \brief MD5 process buffer |
| 29 | * |
| 30 | * \param ctx MD5 context |
| 31 | * \param input buffer holding the data |
| 32 | * \param ilen length of the input data |
| 33 | */ |
| 34 | void md5_update( md5_context *ctx, unsigned char *input, int ilen ); |
| 35 | |
| 36 | /** |
| 37 | * \brief MD5 final digest |
| 38 | * |
| 39 | * \param ctx MD5 context |
| 40 | * \param output MD5 checksum result |
| 41 | */ |
| 42 | void md5_finish( md5_context *ctx, unsigned char output[16] ); |
| 43 | |
| 44 | /** |
| 45 | * \brief Output = MD5( input buffer ) |
| 46 | * |
| 47 | * \param input buffer holding the data |
| 48 | * \param ilen length of the input data |
| 49 | * \param output MD5 checksum result |
| 50 | */ |
| 51 | void md5( unsigned char *input, int ilen, unsigned char output[16] ); |
| 52 | |
| 53 | /** |
| 54 | * \brief Output = MD5( file contents ) |
| 55 | * |
| 56 | * \param path input file name |
| 57 | * \param output MD5 checksum result |
| 58 | * |
| 59 | * \return 0 if successful, 1 if fopen failed, |
| 60 | * or 2 if fread failed |
| 61 | */ |
| 62 | int md5_file( char *path, unsigned char output[16] ); |
| 63 | |
| 64 | /** |
| 65 | * \brief MD5 HMAC context setup |
| 66 | * |
| 67 | * \param ctx HMAC context to be initialized |
| 68 | * \param key HMAC secret key |
| 69 | * \param keylen length of the HMAC key |
| 70 | */ |
| 71 | void md5_hmac_starts( md5_context *ctx, unsigned char *key, int keylen ); |
| 72 | |
| 73 | /** |
| 74 | * \brief MD5 HMAC process buffer |
| 75 | * |
| 76 | * \param ctx HMAC context |
| 77 | * \param input buffer holding the data |
| 78 | * \param ilen length of the input data |
| 79 | */ |
| 80 | void md5_hmac_update( md5_context *ctx, unsigned char *input, int ilen ); |
| 81 | |
| 82 | /** |
| 83 | * \brief MD5 HMAC final digest |
| 84 | * |
| 85 | * \param ctx HMAC context |
| 86 | * \param output MD5 HMAC checksum result |
| 87 | */ |
| 88 | void md5_hmac_finish( md5_context *ctx, unsigned char output[16] ); |
| 89 | |
| 90 | /** |
| 91 | * \brief Output = HMAC-MD5( hmac key, input buffer ) |
| 92 | * |
| 93 | * \param key HMAC secret key |
| 94 | * \param keylen length of the HMAC key |
| 95 | * \param input buffer holding the data |
| 96 | * \param ilen length of the input data |
| 97 | * \param output HMAC-MD5 result |
| 98 | */ |
| 99 | void md5_hmac( unsigned char *key, int keylen, |
| 100 | unsigned char *input, int ilen, |
| 101 | unsigned char output[16] ); |
| 102 | |
| 103 | /** |
| 104 | * \brief Checkup routine |
| 105 | * |
| 106 | * \return 0 if successful, or 1 if the test failed |
| 107 | */ |
| 108 | int md5_self_test( int verbose ); |
| 109 | |
| 110 | /* |
| 111 | * 32-bit integer manipulation macros (little endian) |
| 112 | */ |
| 113 | #ifndef GET_ULONG_LE |
| 114 | #define GET_ULONG_LE(n,b,i) \ |
| 115 | { \ |
| 116 | (n) = ( (unsigned long) (b)[(i) ] ) \ |
| 117 | | ( (unsigned long) (b)[(i) + 1] << 8 ) \ |
| 118 | | ( (unsigned long) (b)[(i) + 2] << 16 ) \ |
| 119 | | ( (unsigned long) (b)[(i) + 3] << 24 ); \ |
| 120 | } |
| 121 | #endif |
| 122 | |
| 123 | #ifndef PUT_ULONG_LE |
| 124 | #define PUT_ULONG_LE(n,b,i) \ |
| 125 | { \ |
| 126 | (b)[(i) ] = (unsigned char) ( (n) ); \ |
| 127 | (b)[(i) + 1] = (unsigned char) ( (n) >> 8 ); \ |
| 128 | (b)[(i) + 2] = (unsigned char) ( (n) >> 16 ); \ |
| 129 | (b)[(i) + 3] = (unsigned char) ( (n) >> 24 ); \ |
| 130 | } |
| 131 | #endif |
| 132 | |
| 133 | /* |
| 134 | * MD5 context setup |
| 135 | */ |
| 136 | void md5_starts( md5_context *ctx ) |
| 137 | { |
| 138 | ctx->total[0] = 0; |
| 139 | ctx->total[1] = 0; |
| 140 | |
| 141 | ctx->state[0] = 0x67452301; |
| 142 | ctx->state[1] = 0xEFCDAB89; |
| 143 | ctx->state[2] = 0x98BADCFE; |
| 144 | ctx->state[3] = 0x10325476; |
| 145 | } |
| 146 | |
| 147 | static void md5_process( md5_context *ctx, unsigned char data[64] ) |
| 148 | { |
| 149 | unsigned long X[16], A, B, C, D; |
| 150 | |
| 151 | GET_ULONG_LE( X[ 0], data, 0 ); |
| 152 | GET_ULONG_LE( X[ 1], data, 4 ); |
| 153 | GET_ULONG_LE( X[ 2], data, 8 ); |
| 154 | GET_ULONG_LE( X[ 3], data, 12 ); |
| 155 | GET_ULONG_LE( X[ 4], data, 16 ); |
| 156 | GET_ULONG_LE( X[ 5], data, 20 ); |
| 157 | GET_ULONG_LE( X[ 6], data, 24 ); |
| 158 | GET_ULONG_LE( X[ 7], data, 28 ); |
| 159 | GET_ULONG_LE( X[ 8], data, 32 ); |
| 160 | GET_ULONG_LE( X[ 9], data, 36 ); |
| 161 | GET_ULONG_LE( X[10], data, 40 ); |
| 162 | GET_ULONG_LE( X[11], data, 44 ); |
| 163 | GET_ULONG_LE( X[12], data, 48 ); |
| 164 | GET_ULONG_LE( X[13], data, 52 ); |
| 165 | GET_ULONG_LE( X[14], data, 56 ); |
| 166 | GET_ULONG_LE( X[15], data, 60 ); |
| 167 | |
| 168 | #define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n))) |
| 169 | |
| 170 | #define P(a,b,c,d,k,s,t) \ |
| 171 | { \ |
| 172 | a += F(b,c,d) + X[k] + t; a = S(a,s) + b; \ |
| 173 | } |
| 174 | |
| 175 | A = ctx->state[0]; |
| 176 | B = ctx->state[1]; |
| 177 | C = ctx->state[2]; |
| 178 | D = ctx->state[3]; |
| 179 | |
| 180 | #define F(x,y,z) (z ^ (x & (y ^ z))) |
| 181 | |
| 182 | P( A, B, C, D, 0, 7, 0xD76AA478 ); |
| 183 | P( D, A, B, C, 1, 12, 0xE8C7B756 ); |
| 184 | P( C, D, A, B, 2, 17, 0x242070DB ); |
| 185 | P( B, C, D, A, 3, 22, 0xC1BDCEEE ); |
| 186 | P( A, B, C, D, 4, 7, 0xF57C0FAF ); |
| 187 | P( D, A, B, C, 5, 12, 0x4787C62A ); |
| 188 | P( C, D, A, B, 6, 17, 0xA8304613 ); |
| 189 | P( B, C, D, A, 7, 22, 0xFD469501 ); |
| 190 | P( A, B, C, D, 8, 7, 0x698098D8 ); |
| 191 | P( D, A, B, C, 9, 12, 0x8B44F7AF ); |
| 192 | P( C, D, A, B, 10, 17, 0xFFFF5BB1 ); |
| 193 | P( B, C, D, A, 11, 22, 0x895CD7BE ); |
| 194 | P( A, B, C, D, 12, 7, 0x6B901122 ); |
| 195 | P( D, A, B, C, 13, 12, 0xFD987193 ); |
| 196 | P( C, D, A, B, 14, 17, 0xA679438E ); |
| 197 | P( B, C, D, A, 15, 22, 0x49B40821 ); |
| 198 | |
| 199 | #undef F |
| 200 | |
| 201 | #define F(x,y,z) (y ^ (z & (x ^ y))) |
| 202 | |
| 203 | P( A, B, C, D, 1, 5, 0xF61E2562 ); |
| 204 | P( D, A, B, C, 6, 9, 0xC040B340 ); |
| 205 | P( C, D, A, B, 11, 14, 0x265E5A51 ); |
| 206 | P( B, C, D, A, 0, 20, 0xE9B6C7AA ); |
| 207 | P( A, B, C, D, 5, 5, 0xD62F105D ); |
| 208 | P( D, A, B, C, 10, 9, 0x02441453 ); |
| 209 | P( C, D, A, B, 15, 14, 0xD8A1E681 ); |
| 210 | P( B, C, D, A, 4, 20, 0xE7D3FBC8 ); |
| 211 | P( A, B, C, D, 9, 5, 0x21E1CDE6 ); |
| 212 | P( D, A, B, C, 14, 9, 0xC33707D6 ); |
| 213 | P( C, D, A, B, 3, 14, 0xF4D50D87 ); |
| 214 | P( B, C, D, A, 8, 20, 0x455A14ED ); |
| 215 | P( A, B, C, D, 13, 5, 0xA9E3E905 ); |
| 216 | P( D, A, B, C, 2, 9, 0xFCEFA3F8 ); |
| 217 | P( C, D, A, B, 7, 14, 0x676F02D9 ); |
| 218 | P( B, C, D, A, 12, 20, 0x8D2A4C8A ); |
| 219 | |
| 220 | #undef F |
| 221 | |
| 222 | #define F(x,y,z) (x ^ y ^ z) |
| 223 | |
| 224 | P( A, B, C, D, 5, 4, 0xFFFA3942 ); |
| 225 | P( D, A, B, C, 8, 11, 0x8771F681 ); |
| 226 | P( C, D, A, B, 11, 16, 0x6D9D6122 ); |
| 227 | P( B, C, D, A, 14, 23, 0xFDE5380C ); |
| 228 | P( A, B, C, D, 1, 4, 0xA4BEEA44 ); |
| 229 | P( D, A, B, C, 4, 11, 0x4BDECFA9 ); |
| 230 | P( C, D, A, B, 7, 16, 0xF6BB4B60 ); |
| 231 | P( B, C, D, A, 10, 23, 0xBEBFBC70 ); |
| 232 | P( A, B, C, D, 13, 4, 0x289B7EC6 ); |
| 233 | P( D, A, B, C, 0, 11, 0xEAA127FA ); |
| 234 | P( C, D, A, B, 3, 16, 0xD4EF3085 ); |
| 235 | P( B, C, D, A, 6, 23, 0x04881D05 ); |
| 236 | P( A, B, C, D, 9, 4, 0xD9D4D039 ); |
| 237 | P( D, A, B, C, 12, 11, 0xE6DB99E5 ); |
| 238 | P( C, D, A, B, 15, 16, 0x1FA27CF8 ); |
| 239 | P( B, C, D, A, 2, 23, 0xC4AC5665 ); |
| 240 | |
| 241 | #undef F |
| 242 | |
| 243 | #define F(x,y,z) (y ^ (x | ~z)) |
| 244 | |
| 245 | P( A, B, C, D, 0, 6, 0xF4292244 ); |
| 246 | P( D, A, B, C, 7, 10, 0x432AFF97 ); |
| 247 | P( C, D, A, B, 14, 15, 0xAB9423A7 ); |
| 248 | P( B, C, D, A, 5, 21, 0xFC93A039 ); |
| 249 | P( A, B, C, D, 12, 6, 0x655B59C3 ); |
| 250 | P( D, A, B, C, 3, 10, 0x8F0CCC92 ); |
| 251 | P( C, D, A, B, 10, 15, 0xFFEFF47D ); |
| 252 | P( B, C, D, A, 1, 21, 0x85845DD1 ); |
| 253 | P( A, B, C, D, 8, 6, 0x6FA87E4F ); |
| 254 | P( D, A, B, C, 15, 10, 0xFE2CE6E0 ); |
| 255 | P( C, D, A, B, 6, 15, 0xA3014314 ); |
| 256 | P( B, C, D, A, 13, 21, 0x4E0811A1 ); |
| 257 | P( A, B, C, D, 4, 6, 0xF7537E82 ); |
| 258 | P( D, A, B, C, 11, 10, 0xBD3AF235 ); |
| 259 | P( C, D, A, B, 2, 15, 0x2AD7D2BB ); |
| 260 | P( B, C, D, A, 9, 21, 0xEB86D391 ); |
| 261 | |
| 262 | #undef F |
| 263 | |
| 264 | ctx->state[0] += A; |
| 265 | ctx->state[1] += B; |
| 266 | ctx->state[2] += C; |
| 267 | ctx->state[3] += D; |
| 268 | } |
| 269 | |
| 270 | /* |
| 271 | * MD5 process buffer |
| 272 | */ |
| 273 | void md5_update( md5_context *ctx, unsigned char *input, int ilen ) |
| 274 | { |
| 275 | int fill; |
| 276 | unsigned long left; |
| 277 | |
| 278 | if( ilen <= 0 ) |
| 279 | return; |
| 280 | |
| 281 | left = ctx->total[0] & 0x3F; |
| 282 | fill = 64 - left; |
| 283 | |
| 284 | ctx->total[0] += ilen; |
| 285 | ctx->total[0] &= 0xFFFFFFFF; |
| 286 | |
| 287 | if( ctx->total[0] < (unsigned long) ilen ) |
| 288 | ctx->total[1]++; |
| 289 | |
| 290 | if( left && ilen >= fill ) |
| 291 | { |
| 292 | memcpy( (void *) (ctx->buffer + left), |
| 293 | (void *) input, fill ); |
| 294 | md5_process( ctx, ctx->buffer ); |
| 295 | input += fill; |
| 296 | ilen -= fill; |
| 297 | left = 0; |
| 298 | } |
| 299 | |
| 300 | while( ilen >= 64 ) |
| 301 | { |
| 302 | md5_process( ctx, input ); |
| 303 | input += 64; |
| 304 | ilen -= 64; |
| 305 | } |
| 306 | |
| 307 | if( ilen > 0 ) |
| 308 | { |
| 309 | memcpy( (void *) (ctx->buffer + left), |
| 310 | (void *) input, ilen ); |
| 311 | } |
| 312 | } |
| 313 | |
| 314 | static const unsigned char md5_padding[64] = |
| 315 | { |
| 316 | 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 317 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 318 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 319 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
| 320 | }; |
| 321 | |
| 322 | /* |
| 323 | * MD5 final digest |
| 324 | */ |
| 325 | void md5_finish( md5_context *ctx, unsigned char output[16] ) |
| 326 | { |
| 327 | unsigned long last, padn; |
| 328 | unsigned long high, low; |
| 329 | unsigned char msglen[8]; |
| 330 | |
| 331 | high = ( ctx->total[0] >> 29 ) |
| 332 | | ( ctx->total[1] << 3 ); |
| 333 | low = ( ctx->total[0] << 3 ); |
| 334 | |
| 335 | PUT_ULONG_LE( low, msglen, 0 ); |
| 336 | PUT_ULONG_LE( high, msglen, 4 ); |
| 337 | |
| 338 | last = ctx->total[0] & 0x3F; |
| 339 | padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last ); |
| 340 | |
| 341 | md5_update( ctx, (unsigned char *) md5_padding, padn ); |
| 342 | md5_update( ctx, msglen, 8 ); |
| 343 | |
| 344 | PUT_ULONG_LE( ctx->state[0], output, 0 ); |
| 345 | PUT_ULONG_LE( ctx->state[1], output, 4 ); |
| 346 | PUT_ULONG_LE( ctx->state[2], output, 8 ); |
| 347 | PUT_ULONG_LE( ctx->state[3], output, 12 ); |
| 348 | } |
| 349 | |
| 350 | /* |
| 351 | * output = MD5( input buffer ) |
| 352 | */ |
| 353 | void md5( unsigned char *input, int ilen, unsigned char output[16] ) |
| 354 | { |
| 355 | md5_context ctx; |
| 356 | |
| 357 | md5_starts( &ctx ); |
| 358 | md5_update( &ctx, input, ilen ); |
| 359 | md5_finish( &ctx, output ); |
| 360 | |
| 361 | memset( &ctx, 0, sizeof( md5_context ) ); |
| 362 | } |
| 363 | |
| 364 | unsigned int md5hash ( const void * input, int len, unsigned int /*seed*/ ) |
| 365 | { |
| 366 | unsigned int hash[4]; |
| 367 | |
| 368 | md5((unsigned char *)input,len,(unsigned char *)hash); |
| 369 | |
| 370 | //return hash[0] ^ hash[1] ^ hash[2] ^ hash[3]; |
| 371 | |
| 372 | return hash[0]; |
| 373 | } |
| 374 | |
| 375 | void md5_32 ( const void * key, int len, uint32_t /*seed*/, void * out ) |
| 376 | { |
| 377 | unsigned int hash[4]; |
| 378 | |
| 379 | md5((unsigned char*)key,len,(unsigned char*)hash); |
| 380 | |
| 381 | *(uint32_t*)out = hash[0]; |
tanjent@gmail.com | 7e5c363 | 2010-11-02 00:50:04 +0000 | [diff] [blame] | 382 | } |