2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc.
19 * MD5 Message-Digest Algorithm (RFC 1321).
22 * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5
25 * Alexander Peslyak, better known as Solar Designer <solar at openwall.com>
27 * This software was written by Alexander Peslyak in 2001. No copyright is
28 * claimed, and the software is hereby placed in the public domain.
29 * In case this attempt to disclaim copyright and place the software in the
30 * public domain is deemed null and void, then the software is
31 * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the
32 * general public under the following terms:
34 * Redistribution and use in source and binary forms, with or without
35 * modification, are permitted.
37 * There's ABSOLUTELY NO WARRANTY, express or implied.
39 * (This is a heavily cut-down "BSD license".)
41 * This differs from Colin Plumb's older public domain implementation in that
42 * no exactly 32-bit integer data type is required (any 32-bit or wider
43 * unsigned integer data type will do), there's no compile-time endianness
44 * configuration, and the function prototypes match OpenSSL's. No code from
45 * Colin Plumb's implementation has been reused; this comment merely compares
46 * the properties of the two independent implementations.
48 * The primary goals of this implementation are portability and ease of use.
49 * It is meant to be fast, but not as fast as possible. Some known
50 * optimizations are not included to reduce source code size and avoid
51 * compile-time configuration.
55 * Copyright 2005 Colin Percival
56 * All rights reserved.
58 * Redistribution and use in source and binary forms, with or without
59 * modification, are permitted provided that the following conditions
61 * 1. Redistributions of source code must retain the above copyright
62 * notice, this list of conditions and the following disclaimer.
63 * 2. Redistributions in binary form must reproduce the above copyright
64 * notice, this list of conditions and the following disclaimer in the
65 * documentation and/or other materials provided with the distribution.
67 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
68 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
69 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
70 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
71 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
72 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
73 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
74 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
75 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
76 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
89 #define ARRAY_SIZE(_n) (sizeof(_n) / sizeof((_n)[0]))
92 be32enc(void *buf, uint32_t u)
96 p[0] = ((uint8_t) ((u >> 24) & 0xff));
97 p[1] = ((uint8_t) ((u >> 16) & 0xff));
98 p[2] = ((uint8_t) ((u >> 8) & 0xff));
99 p[3] = ((uint8_t) (u & 0xff));
103 be64enc(void *buf, uint64_t u)
107 be32enc(p, ((uint32_t) (u >> 32)));
108 be32enc(p + 4, ((uint32_t) (u & 0xffffffffULL)));
113 be16dec(const void *buf)
115 const uint8_t *p = buf;
117 return (((uint16_t) p[0]) << 8) | p[1];
121 be32dec(const void *buf)
123 const uint8_t *p = buf;
125 return (((uint32_t) be16dec(p)) << 16) | be16dec(p + 2);
128 #define MD5_DIGEST_LENGTH 16
130 typedef struct MD5_CTX {
133 unsigned char buffer[64];
137 * The basic MD5 functions.
139 * F and G are optimized compared to their RFC 1321 definitions for
140 * architectures that lack an AND-NOT instruction, just like in Colin Plumb's
143 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
144 #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y))))
145 #define H(x, y, z) (((x) ^ (y)) ^ (z))
146 #define H2(x, y, z) ((x) ^ ((y) ^ (z)))
147 #define I(x, y, z) ((y) ^ ((x) | ~(z)))
150 * The MD5 transformation for all four rounds.
152 #define STEP(f, a, b, c, d, x, t, s) \
153 (a) += f((b), (c), (d)) + (x) + (t); \
154 (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \
158 * SET reads 4 input bytes in little-endian byte order and stores them
159 * in a properly aligned word in host byte order.
161 #if __BYTE_ORDER == __LITTLE_ENDIAN
163 (*(uint32_t *)&ptr[(n) * 4])
169 (uint32_t)ptr[(n) * 4] | \
170 ((uint32_t)ptr[(n) * 4 + 1] << 8) | \
171 ((uint32_t)ptr[(n) * 4 + 2] << 16) | \
172 ((uint32_t)ptr[(n) * 4 + 3] << 24))
178 * This processes one or more 64-byte data blocks, but does NOT update
179 * the bit counters. There are no alignment requirements.
181 static const void *MD5_body(MD5_CTX *ctx, const void *data, unsigned long size)
183 const unsigned char *ptr;
185 uint32_t saved_a, saved_b, saved_c, saved_d;
186 #if __BYTE_ORDER != __LITTLE_ENDIAN
190 ptr = (const unsigned char *)data;
204 STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7)
205 STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12)
206 STEP(F, c, d, a, b, SET(2), 0x242070db, 17)
207 STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22)
208 STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7)
209 STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12)
210 STEP(F, c, d, a, b, SET(6), 0xa8304613, 17)
211 STEP(F, b, c, d, a, SET(7), 0xfd469501, 22)
212 STEP(F, a, b, c, d, SET(8), 0x698098d8, 7)
213 STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12)
214 STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17)
215 STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22)
216 STEP(F, a, b, c, d, SET(12), 0x6b901122, 7)
217 STEP(F, d, a, b, c, SET(13), 0xfd987193, 12)
218 STEP(F, c, d, a, b, SET(14), 0xa679438e, 17)
219 STEP(F, b, c, d, a, SET(15), 0x49b40821, 22)
222 STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5)
223 STEP(G, d, a, b, c, GET(6), 0xc040b340, 9)
224 STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14)
225 STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20)
226 STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5)
227 STEP(G, d, a, b, c, GET(10), 0x02441453, 9)
228 STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14)
229 STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20)
230 STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5)
231 STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9)
232 STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14)
233 STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20)
234 STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5)
235 STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9)
236 STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14)
237 STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20)
240 STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4)
241 STEP(H2, d, a, b, c, GET(8), 0x8771f681, 11)
242 STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16)
243 STEP(H2, b, c, d, a, GET(14), 0xfde5380c, 23)
244 STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4)
245 STEP(H2, d, a, b, c, GET(4), 0x4bdecfa9, 11)
246 STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16)
247 STEP(H2, b, c, d, a, GET(10), 0xbebfbc70, 23)
248 STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4)
249 STEP(H2, d, a, b, c, GET(0), 0xeaa127fa, 11)
250 STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16)
251 STEP(H2, b, c, d, a, GET(6), 0x04881d05, 23)
252 STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4)
253 STEP(H2, d, a, b, c, GET(12), 0xe6db99e5, 11)
254 STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16)
255 STEP(H2, b, c, d, a, GET(2), 0xc4ac5665, 23)
258 STEP(I, a, b, c, d, GET(0), 0xf4292244, 6)
259 STEP(I, d, a, b, c, GET(7), 0x432aff97, 10)
260 STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15)
261 STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21)
262 STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6)
263 STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10)
264 STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15)
265 STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21)
266 STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6)
267 STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10)
268 STEP(I, c, d, a, b, GET(6), 0xa3014314, 15)
269 STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21)
270 STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6)
271 STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10)
272 STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15)
273 STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21)
281 } while (size -= 64);
291 void MD5_begin(MD5_CTX *ctx)
303 MD5_hash(const void *data, size_t size, MD5_CTX *ctx)
306 unsigned long used, available;
309 if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo)
311 ctx->hi += size >> 29;
313 used = saved_lo & 0x3f;
316 available = 64 - used;
318 if (size < available) {
319 memcpy(&ctx->buffer[used], data, size);
323 memcpy(&ctx->buffer[used], data, available);
324 data = (const unsigned char *)data + available;
326 MD5_body(ctx, ctx->buffer, 64);
330 data = MD5_body(ctx, data, size & ~((size_t) 0x3f));
334 memcpy(ctx->buffer, data, size);
338 MD5_end(void *resbuf, MD5_CTX *ctx)
340 unsigned char *result = resbuf;
341 unsigned long used, available;
343 used = ctx->lo & 0x3f;
345 ctx->buffer[used++] = 0x80;
347 available = 64 - used;
350 memset(&ctx->buffer[used], 0, available);
351 MD5_body(ctx, ctx->buffer, 64);
356 memset(&ctx->buffer[used], 0, available - 8);
359 ctx->buffer[56] = ctx->lo;
360 ctx->buffer[57] = ctx->lo >> 8;
361 ctx->buffer[58] = ctx->lo >> 16;
362 ctx->buffer[59] = ctx->lo >> 24;
363 ctx->buffer[60] = ctx->hi;
364 ctx->buffer[61] = ctx->hi >> 8;
365 ctx->buffer[62] = ctx->hi >> 16;
366 ctx->buffer[63] = ctx->hi >> 24;
368 MD5_body(ctx, ctx->buffer, 64);
371 result[1] = ctx->a >> 8;
372 result[2] = ctx->a >> 16;
373 result[3] = ctx->a >> 24;
375 result[5] = ctx->b >> 8;
376 result[6] = ctx->b >> 16;
377 result[7] = ctx->b >> 24;
379 result[9] = ctx->c >> 8;
380 result[10] = ctx->c >> 16;
381 result[11] = ctx->c >> 24;
383 result[13] = ctx->d >> 8;
384 result[14] = ctx->d >> 16;
385 result[15] = ctx->d >> 24;
387 memset(ctx, 0, sizeof(*ctx));
390 #define SHA256_BLOCK_LENGTH 64
391 #define SHA256_DIGEST_LENGTH 32
392 #define SHA256_DIGEST_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
394 typedef struct SHA256Context {
397 uint8_t buf[SHA256_BLOCK_LENGTH];
400 #if BYTE_ORDER == BIG_ENDIAN
402 /* Copy a vector of big-endian uint32_t into a vector of bytes */
403 #define be32enc_vect(dst, src, len) \
404 memcpy((void *)dst, (const void *)src, (size_t)len)
406 /* Copy a vector of bytes into a vector of big-endian uint32_t */
407 #define be32dec_vect(dst, src, len) \
408 memcpy((void *)dst, (const void *)src, (size_t)len)
410 #else /* BYTE_ORDER != BIG_ENDIAN */
413 * Encode a length len/4 vector of (uint32_t) into a length len vector of
414 * (unsigned char) in big-endian form. Assumes len is a multiple of 4.
417 be32enc_vect(unsigned char *dst, const uint32_t *src, size_t len)
421 for (i = 0; i < len / 4; i++)
422 be32enc(dst + i * 4, src[i]);
426 * Decode a big-endian length len vector of (unsigned char) into a length
427 * len/4 vector of (uint32_t). Assumes len is a multiple of 4.
430 be32dec_vect(uint32_t *dst, const unsigned char *src, size_t len)
434 for (i = 0; i < len / 4; i++)
435 dst[i] = be32dec(src + i * 4);
438 #endif /* BYTE_ORDER != BIG_ENDIAN */
441 /* Elementary functions used by SHA256 */
442 #define Ch(x, y, z) ((x & (y ^ z)) ^ z)
443 #define Maj(x, y, z) ((x & (y | z)) | (y & z))
444 #define ROTR(x, n) ((x >> n) | (x << (32 - n)))
447 * SHA256 block compression function. The 256-bit state is transformed via
448 * the 512-bit input block to produce a new state.
451 SHA256_Transform(uint32_t * state, const unsigned char block[64])
453 /* SHA256 round constants. */
454 static const uint32_t K[64] = {
455 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
456 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
457 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
458 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
459 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
460 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
461 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
462 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
463 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
464 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
465 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
466 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
467 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
468 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
469 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
470 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
476 #define S0(x) (ROTR(x, 2) ^ ROTR(x, 13) ^ ROTR(x, 22))
477 #define S1(x) (ROTR(x, 6) ^ ROTR(x, 11) ^ ROTR(x, 25))
478 #define s0(x) (ROTR(x, 7) ^ ROTR(x, 18) ^ (x >> 3))
479 #define s1(x) (ROTR(x, 17) ^ ROTR(x, 19) ^ (x >> 10))
481 /* SHA256 round function */
482 #define RND(a, b, c, d, e, f, g, h, k) \
483 h += S1(e) + Ch(e, f, g) + k; \
485 h += S0(a) + Maj(a, b, c);
487 /* Adjusted round function for rotating state */
488 #define RNDr(S, W, i, ii) \
489 RND(S[(64 - i) % 8], S[(65 - i) % 8], \
490 S[(66 - i) % 8], S[(67 - i) % 8], \
491 S[(68 - i) % 8], S[(69 - i) % 8], \
492 S[(70 - i) % 8], S[(71 - i) % 8], \
493 W[i + ii] + K[i + ii])
495 /* Message schedule computation */
496 #define MSCH(W, ii, i) \
497 W[i + ii + 16] = s1(W[i + ii + 14]) + W[i + ii + 9] + s0(W[i + ii + 1]) + W[i + ii]
499 /* 1. Prepare the first part of the message schedule W. */
500 be32dec_vect(W, block, 64);
502 /* 2. Initialize working variables. */
503 memcpy(S, state, 32);
506 for (i = 0; i < 64; i += 16) {
552 /* 4. Mix local working variables into global state */
553 for (i = 0; i < 8; i++)
557 static unsigned char PAD[64] = {
558 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
559 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
560 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
561 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
564 /* Add padding and terminating bit-count. */
566 SHA256_Pad(SHA256_CTX * ctx)
570 /* Figure out how many bytes we have buffered. */
571 r = (ctx->count >> 3) & 0x3f;
573 /* Pad to 56 mod 64, transforming if we finish a block en route. */
575 /* Pad to 56 mod 64. */
576 memcpy(&ctx->buf[r], PAD, 56 - r);
578 /* Finish the current block and mix. */
579 memcpy(&ctx->buf[r], PAD, 64 - r);
580 SHA256_Transform(ctx->state, ctx->buf);
582 /* The start of the final block is all zeroes. */
583 memset(&ctx->buf[0], 0, 56);
586 /* Add the terminating bit-count. */
587 be64enc(&ctx->buf[56], ctx->count);
589 /* Mix in the final block. */
590 SHA256_Transform(ctx->state, ctx->buf);
593 /* SHA-256 initialization. Begins a SHA-256 operation. */
595 SHA256_Init(SHA256_CTX * ctx)
598 /* Zero bits processed so far */
601 /* Magic initialization constants */
602 ctx->state[0] = 0x6A09E667;
603 ctx->state[1] = 0xBB67AE85;
604 ctx->state[2] = 0x3C6EF372;
605 ctx->state[3] = 0xA54FF53A;
606 ctx->state[4] = 0x510E527F;
607 ctx->state[5] = 0x9B05688C;
608 ctx->state[6] = 0x1F83D9AB;
609 ctx->state[7] = 0x5BE0CD19;
612 /* Add bytes into the hash */
614 SHA256_Update(SHA256_CTX * ctx, const void *in, size_t len)
618 const unsigned char *src = in;
620 /* Number of bytes left in the buffer from previous updates */
621 r = (ctx->count >> 3) & 0x3f;
623 /* Convert the length into a number of bits */
626 /* Update number of bits */
627 ctx->count += bitlen;
629 /* Handle the case where we don't need to perform any transforms */
631 memcpy(&ctx->buf[r], src, len);
635 /* Finish the current block */
636 memcpy(&ctx->buf[r], src, 64 - r);
637 SHA256_Transform(ctx->state, ctx->buf);
641 /* Perform complete blocks */
643 SHA256_Transform(ctx->state, src);
648 /* Copy left over data into buffer */
649 memcpy(ctx->buf, src, len);
653 * SHA-256 finalization. Pads the input data, exports the hash value,
654 * and clears the context state.
657 SHA256_Final(unsigned char digest[static SHA256_DIGEST_LENGTH], SHA256_CTX *ctx)
663 be32enc_vect(digest, ctx->state, SHA256_DIGEST_LENGTH);
665 /* Clear the context state */
666 memset(ctx, 0, sizeof(*ctx));
669 static void *hash_buf(FILE *f, int *len)
671 static char buf[1024];
673 *len = fread(buf, 1, sizeof(buf), f);
675 return *len > 0 ? buf : NULL;
678 static char *hash_string(unsigned char *buf, int len)
680 static char str[SHA256_DIGEST_LENGTH * 2 + 1];
683 if (len * 2 + 1 > sizeof(str))
686 for (i = 0; i < len; i++)
687 sprintf(&str[i * 2], "%02x", buf[i]);
692 static const char *md5_hash(FILE *f)
695 unsigned char val[MD5_DIGEST_LENGTH];
700 while ((buf = hash_buf(f, &len)) != NULL)
701 MD5_hash(buf, len, &ctx);
704 return hash_string(val, MD5_DIGEST_LENGTH);
707 static const char *sha256_hash(FILE *f)
710 unsigned char val[SHA256_DIGEST_LENGTH];
715 while ((buf = hash_buf(f, &len)) != NULL)
716 SHA256_Update(&ctx, buf, len);
717 SHA256_Final(val, &ctx);
719 return hash_string(val, SHA256_DIGEST_LENGTH);
725 const char *(*func)(FILE *f);
729 struct hash_type types[] = {
730 { "md5", md5_hash, MD5_DIGEST_LENGTH },
731 { "sha256", sha256_hash, SHA256_DIGEST_LENGTH },
735 static int usage(const char *progname)
739 fprintf(stderr, "Usage: %s <hash type> [<file>...]\n"
740 "Supported hash types:", progname);
742 for (i = 0; i < ARRAY_SIZE(types); i++)
743 fprintf(stderr, "%s %s", i ? "," : "", types[i].name);
745 fprintf(stderr, "\n");
749 static struct hash_type *get_hash_type(const char *name)
753 for (i = 0; i < ARRAY_SIZE(types); i++) {
754 struct hash_type *t = &types[i];
756 if (!strcmp(t->name, name))
763 static int hash_file(struct hash_type *t, const char *filename, bool add_filename)
767 if (!filename || !strcmp(filename, "-")) {
768 str = t->func(stdin);
770 FILE *f = fopen(filename, "r");
773 fprintf(stderr, "Failed to open '%s'\n", filename);
781 fprintf(stderr, "Failed to generate hash\n");
786 printf("%s %s\n", str, filename ? filename : "-");
793 int main(int argc, char **argv)
796 const char *progname = argv[0];
798 bool add_filename = false;
800 while ((ch = getopt(argc, argv, "n")) != -1) {
806 return usage(progname);
814 return usage(progname);
816 t = get_hash_type(argv[0]);
818 return usage(progname);
821 return hash_file(t, NULL, add_filename);
823 for (i = 0; i < argc - 1; i++)
824 hash_file(t, argv[1 + i], add_filename);