29 #include <sys/types.h> 31 #if STDC_HEADERS || defined _LIBC 37 # define memcpy(d, s, n) bcopy ((s), (d), (n)) 45 # if __BYTE_ORDER == __BIG_ENDIAN 46 # define WORDS_BIGENDIAN 1 50 #ifdef WORDS_BIGENDIAN 52 (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24)) 60 static const unsigned char fillbuf[64] = { 0x80, 0 };
74 ctx->total[0] = ctx->total[1] = 0;
84 md5_read_ctx (ctx, resbuf)
88 ((md5_uint32 *) resbuf)[0] = SWAP (ctx->A);
89 ((md5_uint32 *) resbuf)[1] = SWAP (ctx->B);
90 ((md5_uint32 *) resbuf)[2] = SWAP (ctx->C);
91 ((md5_uint32 *) resbuf)[3] = SWAP (ctx->D);
102 md5_finish_ctx (ctx, resbuf)
107 md5_uint32 bytes = ctx->buflen;
111 ctx->total[0] += bytes;
112 if (ctx->total[0] < bytes)
115 pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
116 memcpy (&ctx->buffer[bytes], fillbuf, pad);
119 ctx->buffer32[(bytes + pad) / 4] = SWAP (ctx->total[0] << 3);
120 ctx->buffer32[(bytes + pad + 4) / 4] = SWAP ((ctx->total[1] << 3) |
121 (ctx->total[0] >> 29));
124 md5_process_block (ctx->buffer, bytes + pad + 8, ctx);
126 return md5_read_ctx (ctx, resbuf);
133 md5_stream (stream, resblock)
138 #define BLOCKSIZE 4096 140 char buffer[BLOCKSIZE + 72];
158 n = fread (buffer + sum, 1, BLOCKSIZE - sum, stream);
162 while (sum < BLOCKSIZE && n != 0);
163 if (n == 0 && ferror (stream))
173 md5_process_block (buffer, BLOCKSIZE, &ctx);
178 md5_process_bytes (buffer, sum, &ctx);
181 md5_finish_ctx (&ctx, resblock);
190 md5_buffer (buffer, len, resblock)
201 md5_process_bytes (buffer, len, &ctx);
204 return md5_finish_ctx (&ctx, resblock);
209 md5_process_bytes (buffer, len, ctx)
214 #define NUM_MD5_WORDS 1024 219 if (ctx->buflen != 0)
221 size_t left_over = ctx->buflen;
223 add = 128 - left_over > len ? len : 128 - left_over;
225 memcpy (&ctx->buffer[left_over], buffer, add);
228 if (left_over + add > 64)
230 md5_process_block (ctx->buffer, (left_over + add) & ~63, ctx);
232 memcpy (ctx->buffer, &ctx->buffer[(left_over + add) & ~63],
233 (left_over + add) & 63);
234 ctx->buflen = (left_over + add) & 63;
237 buffer = (
const char *) buffer + add;
246 md5_process_block (buffer, len & ~63, ctx);
247 buffer = (
const char *) buffer + (len & ~63);
251 md5_uint32 md5_buffer[NUM_MD5_WORDS];
255 num_bytes = len & ~63;
256 while (num_bytes > 0)
258 buf_bytes = (num_bytes <
sizeof (md5_buffer)) ?
259 num_bytes :
sizeof (md5_buffer);
260 memcpy (md5_buffer, buffer, buf_bytes);
261 md5_process_block (md5_buffer, buf_bytes, ctx);
262 num_bytes -= buf_bytes;
263 buffer = (
const char *) buffer + buf_bytes;
273 memcpy (ctx->buffer, buffer, len);
283 #define FF(b, c, d) (d ^ (b & (c ^ d))) 284 #define FG(b, c, d) FF (d, b, c) 285 #define FH(b, c, d) (b ^ c ^ d) 286 #define FI(b, c, d) (c ^ (b | ~d)) 292 md5_process_block (buffer, len, ctx)
297 md5_uint32 correct_words[16];
298 const md5_uint32 *words = buffer;
299 size_t nwords = len /
sizeof (md5_uint32);
300 const md5_uint32 *endp = words + nwords;
301 md5_uint32 A = ctx->A;
302 md5_uint32 B = ctx->B;
303 md5_uint32 C = ctx->C;
304 md5_uint32 D = ctx->D;
309 ctx->total[0] += len;
310 if (ctx->total[0] < len)
317 md5_uint32 *cwp = correct_words;
318 md5_uint32 A_save = A;
319 md5_uint32 B_save = B;
320 md5_uint32 C_save = C;
321 md5_uint32 D_save = D;
330 #define OP(a, b, c, d, s, T) \ 333 a += FF (b, c, d) + (*cwp++ = SWAP (*words)) + T; \ 342 #define CYCLIC(w, s) (w = (w << s) | (w >> (32 - s))) 351 OP (A, B, C, D, 7, 0xd76aa478);
352 OP (D, A, B, C, 12, 0xe8c7b756);
353 OP (C, D, A, B, 17, 0x242070db);
354 OP (B, C, D, A, 22, 0xc1bdceee);
355 OP (A, B, C, D, 7, 0xf57c0faf);
356 OP (D, A, B, C, 12, 0x4787c62a);
357 OP (C, D, A, B, 17, 0xa8304613);
358 OP (B, C, D, A, 22, 0xfd469501);
359 OP (A, B, C, D, 7, 0x698098d8);
360 OP (D, A, B, C, 12, 0x8b44f7af);
361 OP (C, D, A, B, 17, 0xffff5bb1);
362 OP (B, C, D, A, 22, 0x895cd7be);
363 OP (A, B, C, D, 7, 0x6b901122);
364 OP (D, A, B, C, 12, 0xfd987193);
365 OP (C, D, A, B, 17, 0xa679438e);
366 OP (B, C, D, A, 22, 0x49b40821);
372 #define OP(f, a, b, c, d, k, s, T) \ 375 a += f (b, c, d) + correct_words[k] + T; \ 382 OP (FG, A, B, C, D, 1, 5, 0xf61e2562);
383 OP (FG, D, A, B, C, 6, 9, 0xc040b340);
384 OP (FG, C, D, A, B, 11, 14, 0x265e5a51);
385 OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
386 OP (FG, A, B, C, D, 5, 5, 0xd62f105d);
387 OP (FG, D, A, B, C, 10, 9, 0x02441453);
388 OP (FG, C, D, A, B, 15, 14, 0xd8a1e681);
389 OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
390 OP (FG, A, B, C, D, 9, 5, 0x21e1cde6);
391 OP (FG, D, A, B, C, 14, 9, 0xc33707d6);
392 OP (FG, C, D, A, B, 3, 14, 0xf4d50d87);
393 OP (FG, B, C, D, A, 8, 20, 0x455a14ed);
394 OP (FG, A, B, C, D, 13, 5, 0xa9e3e905);
395 OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8);
396 OP (FG, C, D, A, B, 7, 14, 0x676f02d9);
397 OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
400 OP (FH, A, B, C, D, 5, 4, 0xfffa3942);
401 OP (FH, D, A, B, C, 8, 11, 0x8771f681);
402 OP (FH, C, D, A, B, 11, 16, 0x6d9d6122);
403 OP (FH, B, C, D, A, 14, 23, 0xfde5380c);
404 OP (FH, A, B, C, D, 1, 4, 0xa4beea44);
405 OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9);
406 OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60);
407 OP (FH, B, C, D, A, 10, 23, 0xbebfbc70);
408 OP (FH, A, B, C, D, 13, 4, 0x289b7ec6);
409 OP (FH, D, A, B, C, 0, 11, 0xeaa127fa);
410 OP (FH, C, D, A, B, 3, 16, 0xd4ef3085);
411 OP (FH, B, C, D, A, 6, 23, 0x04881d05);
412 OP (FH, A, B, C, D, 9, 4, 0xd9d4d039);
413 OP (FH, D, A, B, C, 12, 11, 0xe6db99e5);
414 OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8);
415 OP (FH, B, C, D, A, 2, 23, 0xc4ac5665);
418 OP (FI, A, B, C, D, 0, 6, 0xf4292244);
419 OP (FI, D, A, B, C, 7, 10, 0x432aff97);
420 OP (FI, C, D, A, B, 14, 15, 0xab9423a7);
421 OP (FI, B, C, D, A, 5, 21, 0xfc93a039);
422 OP (FI, A, B, C, D, 12, 6, 0x655b59c3);
423 OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92);
424 OP (FI, C, D, A, B, 10, 15, 0xffeff47d);
425 OP (FI, B, C, D, A, 1, 21, 0x85845dd1);
426 OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f);
427 OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
428 OP (FI, C, D, A, B, 6, 15, 0xa3014314);
429 OP (FI, B, C, D, A, 13, 21, 0x4e0811a1);
430 OP (FI, A, B, C, D, 4, 6, 0xf7537e82);
431 OP (FI, D, A, B, C, 11, 10, 0xbd3af235);
432 OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
433 OP (FI, B, C, D, A, 9, 21, 0xeb86d391);