65 |
md5_init_ctx (ctx) |
md5_init_ctx (ctx) |
66 |
struct md5_ctx *ctx; |
struct md5_ctx *ctx; |
67 |
{ |
{ |
68 |
ctx->A = 0x67452301; |
ctx->A = (md5_uint32) 0x67452301; |
69 |
ctx->B = 0xefcdab89; |
ctx->B = (md5_uint32) 0xefcdab89; |
70 |
ctx->C = 0x98badcfe; |
ctx->C = (md5_uint32) 0x98badcfe; |
71 |
ctx->D = 0x10325476; |
ctx->D = (md5_uint32) 0x10325476; |
72 |
|
|
73 |
ctx->total[0] = ctx->total[1] = 0; |
ctx->total[0] = ctx->total[1] = 0; |
74 |
ctx->buflen = 0; |
ctx->buflen = 0; |
229 |
ctx->buflen = (left_over + add) & 63; |
ctx->buflen = (left_over + add) & 63; |
230 |
} |
} |
231 |
|
|
232 |
buffer = (const char *) buffer + add; |
buffer = (const void *) ((const char *) buffer + add); |
233 |
len -= add; |
len -= add; |
234 |
} |
} |
235 |
|
|
237 |
if (len > 64) |
if (len > 64) |
238 |
{ |
{ |
239 |
md5_process_block (buffer, len & ~63, ctx); |
md5_process_block (buffer, len & ~63, ctx); |
240 |
buffer = (const char *) buffer + (len & ~63); |
buffer = (const void *) ((const char *) buffer + (len & ~63)); |
241 |
len &= 63; |
len &= 63; |
242 |
} |
} |
243 |
|
|
269 |
struct md5_ctx *ctx; |
struct md5_ctx *ctx; |
270 |
{ |
{ |
271 |
md5_uint32 correct_words[16]; |
md5_uint32 correct_words[16]; |
272 |
const md5_uint32 *words = buffer; |
const md5_uint32 *words = (const md5_uint32 *) buffer; |
273 |
size_t nwords = len / sizeof (md5_uint32); |
size_t nwords = len / sizeof (md5_uint32); |
274 |
const md5_uint32 *endp = words + nwords; |
const md5_uint32 *endp = words + nwords; |
275 |
md5_uint32 A = ctx->A; |
md5_uint32 A = ctx->A; |
322 |
*/ |
*/ |
323 |
|
|
324 |
/* Round 1. */ |
/* Round 1. */ |
325 |
OP (A, B, C, D, 7, 0xd76aa478); |
OP (A, B, C, D, 7, (md5_uint32) 0xd76aa478); |
326 |
OP (D, A, B, C, 12, 0xe8c7b756); |
OP (D, A, B, C, 12, (md5_uint32) 0xe8c7b756); |
327 |
OP (C, D, A, B, 17, 0x242070db); |
OP (C, D, A, B, 17, (md5_uint32) 0x242070db); |
328 |
OP (B, C, D, A, 22, 0xc1bdceee); |
OP (B, C, D, A, 22, (md5_uint32) 0xc1bdceee); |
329 |
OP (A, B, C, D, 7, 0xf57c0faf); |
OP (A, B, C, D, 7, (md5_uint32) 0xf57c0faf); |
330 |
OP (D, A, B, C, 12, 0x4787c62a); |
OP (D, A, B, C, 12, (md5_uint32) 0x4787c62a); |
331 |
OP (C, D, A, B, 17, 0xa8304613); |
OP (C, D, A, B, 17, (md5_uint32) 0xa8304613); |
332 |
OP (B, C, D, A, 22, 0xfd469501); |
OP (B, C, D, A, 22, (md5_uint32) 0xfd469501); |
333 |
OP (A, B, C, D, 7, 0x698098d8); |
OP (A, B, C, D, 7, (md5_uint32) 0x698098d8); |
334 |
OP (D, A, B, C, 12, 0x8b44f7af); |
OP (D, A, B, C, 12, (md5_uint32) 0x8b44f7af); |
335 |
OP (C, D, A, B, 17, 0xffff5bb1); |
OP (C, D, A, B, 17, (md5_uint32) 0xffff5bb1); |
336 |
OP (B, C, D, A, 22, 0x895cd7be); |
OP (B, C, D, A, 22, (md5_uint32) 0x895cd7be); |
337 |
OP (A, B, C, D, 7, 0x6b901122); |
OP (A, B, C, D, 7, (md5_uint32) 0x6b901122); |
338 |
OP (D, A, B, C, 12, 0xfd987193); |
OP (D, A, B, C, 12, (md5_uint32) 0xfd987193); |
339 |
OP (C, D, A, B, 17, 0xa679438e); |
OP (C, D, A, B, 17, (md5_uint32) 0xa679438e); |
340 |
OP (B, C, D, A, 22, 0x49b40821); |
OP (B, C, D, A, 22, (md5_uint32) 0x49b40821); |
341 |
|
|
342 |
/* For the second to fourth round we have the possibly swapped words |
/* For the second to fourth round we have the possibly swapped words |
343 |
in CORRECT_WORDS. Redefine the macro to take an additional first |
in CORRECT_WORDS. Redefine the macro to take an additional first |
344 |
argument specifying the function to use. */ |
argument specifying the function to use. */ |
345 |
#undef OP |
#undef OP |
346 |
#define OP(f, a, b, c, d, k, s, T) \ |
#define OP(a, b, c, d, k, s, T) \ |
347 |
do \ |
do \ |
348 |
{ \ |
{ \ |
349 |
a += f (b, c, d) + correct_words[k] + T; \ |
a += FX (b, c, d) + correct_words[k] + T; \ |
350 |
CYCLIC (a, s); \ |
CYCLIC (a, s); \ |
351 |
a += b; \ |
a += b; \ |
352 |
} \ |
} \ |
353 |
while (0) |
while (0) |
354 |
|
|
355 |
|
#define FX(b, c, d) FG (b, c, d) |
356 |
|
|
357 |
/* Round 2. */ |
/* Round 2. */ |
358 |
OP (FG, A, B, C, D, 1, 5, 0xf61e2562); |
OP (A, B, C, D, 1, 5, (md5_uint32) 0xf61e2562); |
359 |
OP (FG, D, A, B, C, 6, 9, 0xc040b340); |
OP (D, A, B, C, 6, 9, (md5_uint32) 0xc040b340); |
360 |
OP (FG, C, D, A, B, 11, 14, 0x265e5a51); |
OP (C, D, A, B, 11, 14, (md5_uint32) 0x265e5a51); |
361 |
OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa); |
OP (B, C, D, A, 0, 20, (md5_uint32) 0xe9b6c7aa); |
362 |
OP (FG, A, B, C, D, 5, 5, 0xd62f105d); |
OP (A, B, C, D, 5, 5, (md5_uint32) 0xd62f105d); |
363 |
OP (FG, D, A, B, C, 10, 9, 0x02441453); |
OP (D, A, B, C, 10, 9, (md5_uint32) 0x02441453); |
364 |
OP (FG, C, D, A, B, 15, 14, 0xd8a1e681); |
OP (C, D, A, B, 15, 14, (md5_uint32) 0xd8a1e681); |
365 |
OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8); |
OP (B, C, D, A, 4, 20, (md5_uint32) 0xe7d3fbc8); |
366 |
OP (FG, A, B, C, D, 9, 5, 0x21e1cde6); |
OP (A, B, C, D, 9, 5, (md5_uint32) 0x21e1cde6); |
367 |
OP (FG, D, A, B, C, 14, 9, 0xc33707d6); |
OP (D, A, B, C, 14, 9, (md5_uint32) 0xc33707d6); |
368 |
OP (FG, C, D, A, B, 3, 14, 0xf4d50d87); |
OP (C, D, A, B, 3, 14, (md5_uint32) 0xf4d50d87); |
369 |
OP (FG, B, C, D, A, 8, 20, 0x455a14ed); |
OP (B, C, D, A, 8, 20, (md5_uint32) 0x455a14ed); |
370 |
OP (FG, A, B, C, D, 13, 5, 0xa9e3e905); |
OP (A, B, C, D, 13, 5, (md5_uint32) 0xa9e3e905); |
371 |
OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8); |
OP (D, A, B, C, 2, 9, (md5_uint32) 0xfcefa3f8); |
372 |
OP (FG, C, D, A, B, 7, 14, 0x676f02d9); |
OP (C, D, A, B, 7, 14, (md5_uint32) 0x676f02d9); |
373 |
OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a); |
OP (B, C, D, A, 12, 20, (md5_uint32) 0x8d2a4c8a); |
374 |
|
|
375 |
|
#undef FX |
376 |
|
#define FX(b, c, d) FH (b, c, d) |
377 |
|
|
378 |
/* Round 3. */ |
/* Round 3. */ |
379 |
OP (FH, A, B, C, D, 5, 4, 0xfffa3942); |
OP (A, B, C, D, 5, 4, (md5_uint32) 0xfffa3942); |
380 |
OP (FH, D, A, B, C, 8, 11, 0x8771f681); |
OP (D, A, B, C, 8, 11, (md5_uint32) 0x8771f681); |
381 |
OP (FH, C, D, A, B, 11, 16, 0x6d9d6122); |
OP (C, D, A, B, 11, 16, (md5_uint32) 0x6d9d6122); |
382 |
OP (FH, B, C, D, A, 14, 23, 0xfde5380c); |
OP (B, C, D, A, 14, 23, (md5_uint32) 0xfde5380c); |
383 |
OP (FH, A, B, C, D, 1, 4, 0xa4beea44); |
OP (A, B, C, D, 1, 4, (md5_uint32) 0xa4beea44); |
384 |
OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9); |
OP (D, A, B, C, 4, 11, (md5_uint32) 0x4bdecfa9); |
385 |
OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60); |
OP (C, D, A, B, 7, 16, (md5_uint32) 0xf6bb4b60); |
386 |
OP (FH, B, C, D, A, 10, 23, 0xbebfbc70); |
OP (B, C, D, A, 10, 23, (md5_uint32) 0xbebfbc70); |
387 |
OP (FH, A, B, C, D, 13, 4, 0x289b7ec6); |
OP (A, B, C, D, 13, 4, (md5_uint32) 0x289b7ec6); |
388 |
OP (FH, D, A, B, C, 0, 11, 0xeaa127fa); |
OP (D, A, B, C, 0, 11, (md5_uint32) 0xeaa127fa); |
389 |
OP (FH, C, D, A, B, 3, 16, 0xd4ef3085); |
OP (C, D, A, B, 3, 16, (md5_uint32) 0xd4ef3085); |
390 |
OP (FH, B, C, D, A, 6, 23, 0x04881d05); |
OP (B, C, D, A, 6, 23, (md5_uint32) 0x04881d05); |
391 |
OP (FH, A, B, C, D, 9, 4, 0xd9d4d039); |
OP (A, B, C, D, 9, 4, (md5_uint32) 0xd9d4d039); |
392 |
OP (FH, D, A, B, C, 12, 11, 0xe6db99e5); |
OP (D, A, B, C, 12, 11, (md5_uint32) 0xe6db99e5); |
393 |
OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8); |
OP (C, D, A, B, 15, 16, (md5_uint32) 0x1fa27cf8); |
394 |
OP (FH, B, C, D, A, 2, 23, 0xc4ac5665); |
OP (B, C, D, A, 2, 23, (md5_uint32) 0xc4ac5665); |
395 |
|
|
396 |
|
#undef FX |
397 |
|
#define FX(b, c, d) FI (b, c, d) |
398 |
|
|
399 |
/* Round 4. */ |
/* Round 4. */ |
400 |
OP (FI, A, B, C, D, 0, 6, 0xf4292244); |
OP (A, B, C, D, 0, 6, (md5_uint32) 0xf4292244); |
401 |
OP (FI, D, A, B, C, 7, 10, 0x432aff97); |
OP (D, A, B, C, 7, 10, (md5_uint32) 0x432aff97); |
402 |
OP (FI, C, D, A, B, 14, 15, 0xab9423a7); |
OP (C, D, A, B, 14, 15, (md5_uint32) 0xab9423a7); |
403 |
OP (FI, B, C, D, A, 5, 21, 0xfc93a039); |
OP (B, C, D, A, 5, 21, (md5_uint32) 0xfc93a039); |
404 |
OP (FI, A, B, C, D, 12, 6, 0x655b59c3); |
OP (A, B, C, D, 12, 6, (md5_uint32) 0x655b59c3); |
405 |
OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92); |
OP (D, A, B, C, 3, 10, (md5_uint32) 0x8f0ccc92); |
406 |
OP (FI, C, D, A, B, 10, 15, 0xffeff47d); |
OP (C, D, A, B, 10, 15, (md5_uint32) 0xffeff47d); |
407 |
OP (FI, B, C, D, A, 1, 21, 0x85845dd1); |
OP (B, C, D, A, 1, 21, (md5_uint32) 0x85845dd1); |
408 |
OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f); |
OP (A, B, C, D, 8, 6, (md5_uint32) 0x6fa87e4f); |
409 |
OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0); |
OP (D, A, B, C, 15, 10, (md5_uint32) 0xfe2ce6e0); |
410 |
OP (FI, C, D, A, B, 6, 15, 0xa3014314); |
OP (C, D, A, B, 6, 15, (md5_uint32) 0xa3014314); |
411 |
OP (FI, B, C, D, A, 13, 21, 0x4e0811a1); |
OP (B, C, D, A, 13, 21, (md5_uint32) 0x4e0811a1); |
412 |
OP (FI, A, B, C, D, 4, 6, 0xf7537e82); |
OP (A, B, C, D, 4, 6, (md5_uint32) 0xf7537e82); |
413 |
OP (FI, D, A, B, C, 11, 10, 0xbd3af235); |
OP (D, A, B, C, 11, 10, (md5_uint32) 0xbd3af235); |
414 |
OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb); |
OP (C, D, A, B, 2, 15, (md5_uint32) 0x2ad7d2bb); |
415 |
OP (FI, B, C, D, A, 9, 21, 0xeb86d391); |
OP (B, C, D, A, 9, 21, (md5_uint32) 0xeb86d391); |
416 |
|
|
417 |
/* Add the starting values of the context. */ |
/* Add the starting values of the context. */ |
418 |
A += A_save; |
A += A_save; |