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Commit | Line | Data |
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846e33c7 RS |
1 | /* |
2 | * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. | |
7e1b7485 | 3 | * |
846e33c7 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
7e1b7485 | 8 | */ |
bb325c7d | 9 | |
cf1b7d96 | 10 | #if defined OPENSSL_NO_MD5 || defined CHARSET_EBCDIC |
1f4643a2 | 11 | # define NO_MD5CRYPT_1 |
3ebf0be1 BM |
12 | #endif |
13 | ||
4e57a12b RL |
14 | #if defined OPENSSL_NO_SHA || defined CHARSET_EBCDIC |
15 | # define NO_SHACRYPT | |
16 | #endif | |
17 | ||
18 | #if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1) || !defined(NO_SHACRYPT) | |
bb325c7d | 19 | |
0f113f3e MC |
20 | # include <string.h> |
21 | ||
22 | # include "apps.h" | |
23 | ||
24 | # include <openssl/bio.h> | |
25 | # include <openssl/err.h> | |
26 | # include <openssl/evp.h> | |
27 | # include <openssl/rand.h> | |
28 | # ifndef OPENSSL_NO_DES | |
29 | # include <openssl/des.h> | |
30 | # endif | |
31 | # ifndef NO_MD5CRYPT_1 | |
32 | # include <openssl/md5.h> | |
33 | # endif | |
4e57a12b RL |
34 | # ifndef NO_SHACRYPT |
35 | # include <openssl/sha.h> | |
36 | # endif | |
0f113f3e | 37 | |
0f113f3e MC |
38 | static unsigned const char cov_2char[64] = { |
39 | /* from crypto/des/fcrypt.c */ | |
40 | 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, | |
41 | 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, | |
42 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, | |
43 | 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, | |
44 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, | |
45 | 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, | |
46 | 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, | |
47 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A | |
bb325c7d BM |
48 | }; |
49 | ||
30745146 RL |
50 | typedef enum { |
51 | passwd_unset = 0, | |
52 | passwd_crypt, | |
53 | passwd_md5, | |
54 | passwd_apr1, | |
55 | passwd_sha256, | |
56 | passwd_sha512 | |
57 | } passwd_modes; | |
58 | ||
e6e7b5f3 | 59 | static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, |
0f113f3e | 60 | char *passwd, BIO *out, int quiet, int table, |
30745146 | 61 | int reverse, size_t pw_maxlen, passwd_modes mode); |
e6e7b5f3 | 62 | |
7e1b7485 RS |
63 | typedef enum OPTION_choice { |
64 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
65 | OPT_IN, | |
66 | OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1, | |
4e57a12b | 67 | OPT_1, OPT_5, OPT_6, OPT_CRYPT, OPT_SALT, OPT_STDIN |
7e1b7485 RS |
68 | } OPTION_CHOICE; |
69 | ||
44c83ebd | 70 | const OPTIONS passwd_options[] = { |
7e1b7485 RS |
71 | {"help", OPT_HELP, '-', "Display this summary"}, |
72 | {"in", OPT_IN, '<', "Pead passwords from file"}, | |
73 | {"noverify", OPT_NOVERIFY, '-', | |
74 | "Never verify when reading password from terminal"}, | |
75 | {"quiet", OPT_QUIET, '-', "No warnings"}, | |
76 | {"table", OPT_TABLE, '-', "Format output as table"}, | |
77 | {"reverse", OPT_REVERSE, '-', "Switch table columns"}, | |
9c3bcfa0 RS |
78 | {"salt", OPT_SALT, 's', "Use provided salt"}, |
79 | {"stdin", OPT_STDIN, '-', "Read passwords from stdin"}, | |
4e57a12b RL |
80 | # ifndef NO_SHACRYPT |
81 | {"6", OPT_6, '-', "SHA512-based password algorithm"}, | |
82 | {"5", OPT_5, '-', "SHA256-based password algorithm"}, | |
83 | # endif | |
7e1b7485 RS |
84 | # ifndef NO_MD5CRYPT_1 |
85 | {"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"}, | |
86 | {"1", OPT_1, '-', "MD5-based password algorithm"}, | |
87 | # endif | |
88 | # ifndef OPENSSL_NO_DES | |
89 | {"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"}, | |
90 | # endif | |
7e1b7485 RS |
91 | {NULL} |
92 | }; | |
07fb39c3 | 93 | |
7e1b7485 | 94 | int passwd_main(int argc, char **argv) |
0f113f3e | 95 | { |
7e1b7485 RS |
96 | BIO *in = NULL; |
97 | char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL; | |
98 | char *salt_malloc = NULL, *passwd_malloc = NULL, *prog; | |
99 | OPTION_CHOICE o; | |
923b1857 RL |
100 | int in_stdin = 0, pw_source_defined = 0; |
101 | #ifndef OPENSSL_NO_UI | |
102 | int in_noverify = 0; | |
103 | #endif | |
0f113f3e | 104 | int passed_salt = 0, quiet = 0, table = 0, reverse = 0; |
30745146 RL |
105 | int ret = 1; |
106 | passwd_modes mode = passwd_unset; | |
107 | size_t passwd_malloc_size = 0; | |
108 | size_t pw_maxlen = 256; /* arbitrary limit, should be enough for most | |
109 | * passwords */ | |
7e1b7485 RS |
110 | |
111 | prog = opt_init(argc, argv, passwd_options); | |
112 | while ((o = opt_next()) != OPT_EOF) { | |
113 | switch (o) { | |
114 | case OPT_EOF: | |
115 | case OPT_ERR: | |
116 | opthelp: | |
117 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
118 | goto end; | |
119 | case OPT_HELP: | |
120 | opt_help(passwd_options); | |
121 | ret = 0; | |
122 | goto end; | |
123 | case OPT_IN: | |
124 | if (pw_source_defined) | |
125 | goto opthelp; | |
126 | infile = opt_arg(); | |
127 | pw_source_defined = 1; | |
128 | break; | |
129 | case OPT_NOVERIFY: | |
923b1857 | 130 | #ifndef OPENSSL_NO_UI |
0f113f3e | 131 | in_noverify = 1; |
923b1857 | 132 | #endif |
7e1b7485 RS |
133 | break; |
134 | case OPT_QUIET: | |
0f113f3e | 135 | quiet = 1; |
7e1b7485 RS |
136 | break; |
137 | case OPT_TABLE: | |
0f113f3e | 138 | table = 1; |
7e1b7485 RS |
139 | break; |
140 | case OPT_REVERSE: | |
0f113f3e | 141 | reverse = 1; |
7e1b7485 | 142 | break; |
30745146 RL |
143 | case OPT_1: |
144 | if (mode != passwd_unset) | |
145 | goto opthelp; | |
146 | mode = passwd_md5; | |
147 | break; | |
4e57a12b | 148 | case OPT_5: |
30745146 RL |
149 | if (mode != passwd_unset) |
150 | goto opthelp; | |
151 | mode = passwd_sha256; | |
4e57a12b RL |
152 | break; |
153 | case OPT_6: | |
30745146 RL |
154 | if (mode != passwd_unset) |
155 | goto opthelp; | |
156 | mode = passwd_sha512; | |
7e1b7485 RS |
157 | break; |
158 | case OPT_APR1: | |
30745146 RL |
159 | if (mode != passwd_unset) |
160 | goto opthelp; | |
161 | mode = passwd_apr1; | |
7e1b7485 RS |
162 | break; |
163 | case OPT_CRYPT: | |
30745146 RL |
164 | if (mode != passwd_unset) |
165 | goto opthelp; | |
166 | mode = passwd_crypt; | |
7e1b7485 RS |
167 | break; |
168 | case OPT_SALT: | |
169 | passed_salt = 1; | |
170 | salt = opt_arg(); | |
171 | break; | |
172 | case OPT_STDIN: | |
173 | if (pw_source_defined) | |
174 | goto opthelp; | |
175 | in_stdin = 1; | |
97b04399 | 176 | pw_source_defined = 1; |
7e1b7485 RS |
177 | break; |
178 | } | |
179 | } | |
180 | argc = opt_num_rest(); | |
181 | argv = opt_rest(); | |
182 | ||
183 | if (*argv) { | |
184 | if (pw_source_defined) | |
185 | goto opthelp; | |
186 | pw_source_defined = 1; | |
187 | passwds = argv; | |
0f113f3e MC |
188 | } |
189 | ||
30745146 | 190 | if (mode == passwd_unset) { |
7e1b7485 | 191 | /* use default */ |
30745146 | 192 | mode = passwd_crypt; |
7e1b7485 | 193 | } |
0f113f3e | 194 | |
0f113f3e | 195 | # ifdef OPENSSL_NO_DES |
30745146 | 196 | if (mode == passwd_crypt) |
7e1b7485 | 197 | goto opthelp; |
0f113f3e MC |
198 | # endif |
199 | # ifdef NO_MD5CRYPT_1 | |
30745146 | 200 | if (mode == passwd_md5 || mode == passwd_apr1) |
7e1b7485 | 201 | goto opthelp; |
0f113f3e | 202 | # endif |
4e57a12b | 203 | # ifdef NO_SHACRYPT |
30745146 | 204 | if (mode == passwd_sha256 || mode == passwd_sha512) |
4e57a12b RL |
205 | goto opthelp; |
206 | # endif | |
0f113f3e | 207 | |
4de9913b | 208 | if (infile != NULL && in_stdin) { |
7e1b7485 RS |
209 | BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog); |
210 | goto end; | |
0f113f3e MC |
211 | } |
212 | ||
4de9913b RL |
213 | if (infile != NULL || in_stdin) { |
214 | /* | |
215 | * If in_stdin is true, we know that infile is NULL, and that | |
216 | * bio_open_default() will give us back an alias for stdin. | |
217 | */ | |
218 | in = bio_open_default(infile, 'r', FORMAT_TEXT); | |
219 | if (in == NULL) | |
220 | goto end; | |
221 | } | |
0f113f3e | 222 | |
30745146 | 223 | if (mode == passwd_crypt) |
0f113f3e | 224 | pw_maxlen = 8; |
0f113f3e MC |
225 | |
226 | if (passwds == NULL) { | |
227 | /* no passwords on the command line */ | |
228 | ||
229 | passwd_malloc_size = pw_maxlen + 2; | |
68dc6824 RS |
230 | /* longer than necessary so that we can warn about truncation */ |
231 | passwd = passwd_malloc = | |
232 | app_malloc(passwd_malloc_size, "password buffer"); | |
0f113f3e MC |
233 | } |
234 | ||
235 | if ((in == NULL) && (passwds == NULL)) { | |
923b1857 RL |
236 | if (1) { |
237 | #ifndef OPENSSL_NO_UI | |
238 | /* build a null-terminated list */ | |
239 | static char *passwds_static[2] = { NULL, NULL }; | |
0f113f3e | 240 | |
923b1857 RL |
241 | passwds = passwds_static; |
242 | if (in == NULL) | |
243 | if (EVP_read_pw_string | |
244 | (passwd_malloc, passwd_malloc_size, "Password: ", | |
245 | !(passed_salt || in_noverify)) != 0) | |
246 | goto end; | |
247 | passwds[0] = passwd_malloc; | |
248 | } else { | |
249 | #endif | |
250 | BIO_printf(bio_err, "password required\n"); | |
251 | goto end; | |
252 | } | |
0f113f3e MC |
253 | } |
254 | ||
923b1857 | 255 | |
0f113f3e MC |
256 | if (in == NULL) { |
257 | assert(passwds != NULL); | |
258 | assert(*passwds != NULL); | |
259 | ||
260 | do { /* loop over list of passwords */ | |
261 | passwd = *passwds++; | |
7e1b7485 | 262 | if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out, |
30745146 | 263 | quiet, table, reverse, pw_maxlen, mode)) |
7e1b7485 | 264 | goto end; |
0f113f3e MC |
265 | } |
266 | while (*passwds != NULL); | |
267 | } else | |
268 | /* in != NULL */ | |
269 | { | |
270 | int done; | |
271 | ||
272 | assert(passwd != NULL); | |
273 | do { | |
274 | int r = BIO_gets(in, passwd, pw_maxlen + 1); | |
275 | if (r > 0) { | |
276 | char *c = (strchr(passwd, '\n')); | |
277 | if (c != NULL) | |
278 | *c = 0; /* truncate at newline */ | |
279 | else { | |
280 | /* ignore rest of line */ | |
281 | char trash[BUFSIZ]; | |
282 | do | |
283 | r = BIO_gets(in, trash, sizeof trash); | |
284 | while ((r > 0) && (!strchr(trash, '\n'))); | |
285 | } | |
286 | ||
7e1b7485 RS |
287 | if (!do_passwd |
288 | (passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet, | |
30745146 | 289 | table, reverse, pw_maxlen, mode)) |
7e1b7485 | 290 | goto end; |
0f113f3e MC |
291 | } |
292 | done = (r <= 0); | |
293 | } | |
294 | while (!done); | |
295 | } | |
296 | ret = 0; | |
297 | ||
7e1b7485 | 298 | end: |
0f113f3e | 299 | ERR_print_errors(bio_err); |
b548a1f1 RS |
300 | OPENSSL_free(salt_malloc); |
301 | OPENSSL_free(passwd_malloc); | |
ca3a82c3 | 302 | BIO_free(in); |
7e1b7485 | 303 | return (ret); |
0f113f3e MC |
304 | } |
305 | ||
306 | # ifndef NO_MD5CRYPT_1 | |
307 | /* | |
308 | * MD5-based password algorithm (should probably be available as a library | |
309 | * function; then the static buffer would not be acceptable). For magic | |
310 | * string "1", this should be compatible to the MD5-based BSD password | |
311 | * algorithm. For 'magic' string "apr1", this is compatible to the MD5-based | |
312 | * Apache password algorithm. (Apparently, the Apache password algorithm is | |
313 | * identical except that the 'magic' string was changed -- the laziest | |
314 | * application of the NIH principle I've ever encountered.) | |
1f4643a2 BM |
315 | */ |
316 | static char *md5crypt(const char *passwd, const char *magic, const char *salt) | |
0f113f3e MC |
317 | { |
318 | /* "$apr1$..salt..$.......md5hash..........\0" */ | |
319 | static char out_buf[6 + 9 + 24 + 2]; | |
320 | unsigned char buf[MD5_DIGEST_LENGTH]; | |
321 | char *salt_out; | |
322 | int n; | |
323 | unsigned int i; | |
d166ed8c | 324 | EVP_MD_CTX *md = NULL, *md2 = NULL; |
f6c460e8 | 325 | size_t passwd_len, salt_len, magic_len; |
0f113f3e MC |
326 | |
327 | passwd_len = strlen(passwd); | |
328 | out_buf[0] = '$'; | |
329 | out_buf[1] = 0; | |
f6c460e8 F |
330 | magic_len = strlen(magic); |
331 | ||
332 | if (magic_len > 4) /* assert it's "1" or "apr1" */ | |
333 | return NULL; | |
334 | ||
7644a9ae RS |
335 | OPENSSL_strlcat(out_buf, magic, sizeof out_buf); |
336 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
337 | OPENSSL_strlcat(out_buf, salt, sizeof out_buf); | |
f6c460e8 | 338 | |
edbff8da | 339 | if (strlen(out_buf) > 6 + 8) /* assert "$apr1$..salt.." */ |
f6c460e8 F |
340 | return NULL; |
341 | ||
342 | salt_out = out_buf + 2 + magic_len; | |
0f113f3e | 343 | salt_len = strlen(salt_out); |
f6c460e8 F |
344 | |
345 | if (salt_len > 8) | |
346 | return NULL; | |
0f113f3e | 347 | |
bfb0641f | 348 | md = EVP_MD_CTX_new(); |
d166ed8c DSH |
349 | if (md == NULL |
350 | || !EVP_DigestInit_ex(md, EVP_md5(), NULL) | |
351 | || !EVP_DigestUpdate(md, passwd, passwd_len) | |
352 | || !EVP_DigestUpdate(md, "$", 1) | |
f6c460e8 | 353 | || !EVP_DigestUpdate(md, magic, magic_len) |
d166ed8c DSH |
354 | || !EVP_DigestUpdate(md, "$", 1) |
355 | || !EVP_DigestUpdate(md, salt_out, salt_len)) | |
9f9f962d | 356 | goto err; |
6e59a892 | 357 | |
bfb0641f | 358 | md2 = EVP_MD_CTX_new(); |
d166ed8c DSH |
359 | if (md2 == NULL |
360 | || !EVP_DigestInit_ex(md2, EVP_md5(), NULL) | |
361 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
362 | || !EVP_DigestUpdate(md2, salt_out, salt_len) | |
363 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
364 | || !EVP_DigestFinal_ex(md2, buf, NULL)) | |
365 | goto err; | |
366 | ||
367 | for (i = passwd_len; i > sizeof buf; i -= sizeof buf) { | |
368 | if (!EVP_DigestUpdate(md, buf, sizeof buf)) | |
369 | goto err; | |
370 | } | |
371 | if (!EVP_DigestUpdate(md, buf, i)) | |
372 | goto err; | |
0f113f3e MC |
373 | |
374 | n = passwd_len; | |
375 | while (n) { | |
d166ed8c DSH |
376 | if (!EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1)) |
377 | goto err; | |
0f113f3e MC |
378 | n >>= 1; |
379 | } | |
d166ed8c DSH |
380 | if (!EVP_DigestFinal_ex(md, buf, NULL)) |
381 | return NULL; | |
0f113f3e MC |
382 | |
383 | for (i = 0; i < 1000; i++) { | |
d166ed8c DSH |
384 | if (!EVP_DigestInit_ex(md2, EVP_md5(), NULL)) |
385 | goto err; | |
386 | if (!EVP_DigestUpdate(md2, | |
387 | (i & 1) ? (unsigned const char *)passwd : buf, | |
388 | (i & 1) ? passwd_len : sizeof buf)) | |
389 | goto err; | |
390 | if (i % 3) { | |
391 | if (!EVP_DigestUpdate(md2, salt_out, salt_len)) | |
392 | goto err; | |
393 | } | |
394 | if (i % 7) { | |
395 | if (!EVP_DigestUpdate(md2, passwd, passwd_len)) | |
396 | goto err; | |
397 | } | |
398 | if (!EVP_DigestUpdate(md2, | |
399 | (i & 1) ? buf : (unsigned const char *)passwd, | |
400 | (i & 1) ? sizeof buf : passwd_len)) | |
401 | goto err; | |
402 | if (!EVP_DigestFinal_ex(md2, buf, NULL)) | |
403 | goto err; | |
0f113f3e | 404 | } |
bfb0641f RL |
405 | EVP_MD_CTX_free(md2); |
406 | EVP_MD_CTX_free(md); | |
d166ed8c DSH |
407 | md2 = NULL; |
408 | md = NULL; | |
0f113f3e MC |
409 | |
410 | { | |
411 | /* transform buf into output string */ | |
0f113f3e MC |
412 | unsigned char buf_perm[sizeof buf]; |
413 | int dest, source; | |
414 | char *output; | |
415 | ||
416 | /* silly output permutation */ | |
417 | for (dest = 0, source = 0; dest < 14; | |
418 | dest++, source = (source + 6) % 17) | |
419 | buf_perm[dest] = buf[source]; | |
420 | buf_perm[14] = buf[5]; | |
421 | buf_perm[15] = buf[11]; | |
422 | # ifndef PEDANTIC /* Unfortunately, this generates a "no | |
423 | * effect" warning */ | |
424 | assert(16 == sizeof buf_perm); | |
425 | # endif | |
426 | ||
427 | output = salt_out + salt_len; | |
428 | assert(output == out_buf + strlen(out_buf)); | |
429 | ||
430 | *output++ = '$'; | |
431 | ||
432 | for (i = 0; i < 15; i += 3) { | |
433 | *output++ = cov_2char[buf_perm[i + 2] & 0x3f]; | |
434 | *output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) | | |
435 | (buf_perm[i + 2] >> 6)]; | |
436 | *output++ = cov_2char[((buf_perm[i] & 3) << 4) | | |
437 | (buf_perm[i + 1] >> 4)]; | |
438 | *output++ = cov_2char[buf_perm[i] >> 2]; | |
439 | } | |
440 | assert(i == 15); | |
441 | *output++ = cov_2char[buf_perm[i] & 0x3f]; | |
442 | *output++ = cov_2char[buf_perm[i] >> 6]; | |
443 | *output = 0; | |
444 | assert(strlen(out_buf) < sizeof(out_buf)); | |
445 | } | |
0f113f3e MC |
446 | |
447 | return out_buf; | |
d166ed8c DSH |
448 | |
449 | err: | |
450 | EVP_MD_CTX_free(md2); | |
451 | EVP_MD_CTX_free(md); | |
452 | return NULL; | |
0f113f3e MC |
453 | } |
454 | # endif | |
e6e7b5f3 | 455 | |
4e57a12b RL |
456 | # ifndef NO_SHACRYPT |
457 | /* | |
458 | * SHA based password algorithm, describe by Ulrich Drepper here: | |
459 | * https://www.akkadia.org/drepper/SHA-crypt.txt | |
460 | * (note that it's in the public domain) | |
461 | */ | |
462 | static char *shacrypt(const char *passwd, const char *magic, const char *salt) | |
463 | { | |
464 | /* Prefix for optional rounds specification. */ | |
465 | static const char rounds_prefix[] = "rounds="; | |
466 | /* Maximum salt string length. */ | |
467 | #define SALT_LEN_MAX 16 | |
468 | /* Default number of rounds if not explicitly specified. */ | |
469 | #define ROUNDS_DEFAULT 5000 | |
470 | /* Minimum number of rounds. */ | |
471 | #define ROUNDS_MIN 1000 | |
472 | /* Maximum number of rounds. */ | |
473 | #define ROUNDS_MAX 999999999 | |
474 | ||
475 | /* "$6$rounds=<N>$......salt......$...shahash(up to 86 chars)...\0" */ | |
476 | static char out_buf[3 + 17 + 17 + 86 + 1]; | |
477 | unsigned char buf[SHA512_DIGEST_LENGTH]; | |
478 | unsigned char temp_buf[SHA512_DIGEST_LENGTH]; | |
479 | size_t buf_size = 0; | |
480 | char salt_copy[17]; /* Max 16 chars plus '\0' */ | |
481 | size_t n; | |
482 | EVP_MD_CTX *md = NULL, *md2 = NULL; | |
483 | const EVP_MD *sha = NULL; | |
484 | size_t passwd_len, salt_len, magic_len; | |
485 | size_t rounds = 5000; /* Default */ | |
486 | char rounds_custom = 0; | |
487 | char *p_bytes = NULL; | |
488 | char *s_bytes = NULL; | |
489 | char *cp = NULL; | |
490 | ||
491 | passwd_len = strlen(passwd); | |
492 | magic_len = strlen(magic); | |
493 | ||
494 | /* assert it's "5" or "6" */ | |
495 | if (magic_len != 1) | |
496 | return NULL; | |
497 | ||
498 | switch (magic[0]) { | |
499 | case '5': | |
500 | sha = EVP_sha256(); | |
501 | buf_size = 32; | |
502 | break; | |
503 | case '6': | |
504 | sha = EVP_sha512(); | |
505 | buf_size = 64; | |
506 | break; | |
507 | default: | |
508 | return NULL; | |
509 | } | |
510 | ||
511 | if (strncmp(salt, rounds_prefix, sizeof(rounds_prefix) - 1) == 0) { | |
512 | const char *num = salt + sizeof(rounds_prefix) - 1; | |
513 | char *endp; | |
514 | unsigned long int srounds = strtoul (num, &endp, 10); | |
515 | if (*endp == '$') { | |
516 | salt = endp + 1; | |
517 | if (srounds > ROUNDS_MAX) | |
518 | rounds = ROUNDS_MAX; | |
519 | else if (srounds < ROUNDS_MIN) | |
520 | rounds = ROUNDS_MIN; | |
521 | else | |
522 | rounds = srounds; | |
523 | rounds_custom = 1; | |
524 | } else { | |
525 | return NULL; | |
526 | } | |
527 | } | |
528 | ||
529 | /* The salt gets truncated to 16 chars */ | |
530 | OPENSSL_strlcpy(salt_copy, salt, sizeof salt_copy); | |
531 | salt_len = strlen(salt_copy); | |
532 | ||
533 | out_buf[0] = 0; | |
534 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
535 | OPENSSL_strlcat(out_buf, magic, sizeof out_buf); | |
536 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
537 | if (rounds_custom) { | |
538 | char tmp_buf[7 + 9 + 1]; /* "rounds=999999999" */ | |
539 | sprintf(tmp_buf, "rounds=%lu", rounds); | |
540 | OPENSSL_strlcat(out_buf, tmp_buf, sizeof out_buf); | |
541 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
542 | } | |
543 | OPENSSL_strlcat(out_buf, salt_copy, sizeof out_buf); | |
544 | ||
545 | /* assert "$5$rounds=999999999$......salt......" */ | |
546 | if (strlen(out_buf) > 3 + 17 * rounds_custom + salt_len ) | |
547 | return NULL; | |
548 | ||
549 | md = EVP_MD_CTX_new(); | |
550 | if (md == NULL | |
551 | || !EVP_DigestInit_ex(md, sha, NULL) | |
552 | || !EVP_DigestUpdate(md, passwd, passwd_len) | |
553 | || !EVP_DigestUpdate(md, salt_copy, salt_len)) | |
554 | goto err; | |
555 | ||
556 | md2 = EVP_MD_CTX_new(); | |
557 | if (md2 == NULL | |
558 | || !EVP_DigestInit_ex(md2, sha, NULL) | |
559 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
560 | || !EVP_DigestUpdate(md2, salt_copy, salt_len) | |
561 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
562 | || !EVP_DigestFinal_ex(md2, buf, NULL)) | |
563 | goto err; | |
564 | ||
565 | for (n = passwd_len; n > buf_size; n -= buf_size) { | |
566 | if (!EVP_DigestUpdate(md, buf, buf_size)) | |
567 | goto err; | |
568 | } | |
569 | if (!EVP_DigestUpdate(md, buf, n)) | |
570 | goto err; | |
571 | ||
572 | n = passwd_len; | |
573 | while (n) { | |
574 | if (!EVP_DigestUpdate(md, | |
575 | (n & 1) ? buf : (unsigned const char *)passwd, | |
576 | (n & 1) ? buf_size : passwd_len)) | |
577 | goto err; | |
578 | n >>= 1; | |
579 | } | |
580 | if (!EVP_DigestFinal_ex(md, buf, NULL)) | |
581 | return NULL; | |
582 | ||
583 | /* P sequence */ | |
584 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
585 | goto err; | |
586 | ||
587 | for (n = passwd_len; n > 0; n--) | |
588 | if (!EVP_DigestUpdate(md2, passwd, passwd_len)) | |
589 | goto err; | |
590 | ||
591 | if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) | |
592 | return NULL; | |
593 | ||
594 | if ((p_bytes = OPENSSL_zalloc(passwd_len)) == NULL) | |
595 | goto err; | |
596 | for (cp = p_bytes, n = passwd_len; n > buf_size; n -= buf_size, cp += buf_size) | |
597 | memcpy(cp, temp_buf, buf_size); | |
598 | memcpy(cp, temp_buf, n); | |
599 | ||
600 | /* S sequence */ | |
601 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
602 | goto err; | |
603 | ||
604 | for (n = 16 + buf[0]; n > 0; n--) | |
605 | if (!EVP_DigestUpdate(md2, salt, salt_len)) | |
606 | goto err; | |
607 | ||
608 | if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) | |
609 | return NULL; | |
610 | ||
611 | if ((s_bytes = OPENSSL_zalloc(salt_len)) == NULL) | |
612 | goto err; | |
613 | for (cp = s_bytes, n = salt_len; n > buf_size; n -= buf_size, cp += buf_size) | |
614 | memcpy(cp, temp_buf, buf_size); | |
615 | memcpy(cp, temp_buf, n); | |
616 | ||
617 | for (n = 0; n < rounds; n++) { | |
618 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
619 | goto err; | |
620 | if (!EVP_DigestUpdate(md2, | |
621 | (n & 1) ? (unsigned const char *)p_bytes : buf, | |
622 | (n & 1) ? passwd_len : buf_size)) | |
623 | goto err; | |
624 | if (n % 3) { | |
625 | if (!EVP_DigestUpdate(md2, s_bytes, salt_len)) | |
626 | goto err; | |
627 | } | |
628 | if (n % 7) { | |
629 | if (!EVP_DigestUpdate(md2, p_bytes, passwd_len)) | |
630 | goto err; | |
631 | } | |
632 | if (!EVP_DigestUpdate(md2, | |
633 | (n & 1) ? buf : (unsigned const char *)p_bytes, | |
634 | (n & 1) ? buf_size : passwd_len)) | |
635 | goto err; | |
636 | if (!EVP_DigestFinal_ex(md2, buf, NULL)) | |
637 | goto err; | |
638 | } | |
639 | EVP_MD_CTX_free(md2); | |
640 | EVP_MD_CTX_free(md); | |
641 | md2 = NULL; | |
642 | md = NULL; | |
643 | OPENSSL_free(p_bytes); | |
644 | OPENSSL_free(s_bytes); | |
645 | p_bytes = NULL; | |
646 | s_bytes = NULL; | |
647 | ||
648 | cp = out_buf + strlen(out_buf); | |
649 | *cp++ = '$'; | |
650 | ||
651 | #define b64_from_24bit(B2, B1, B0, N) \ | |
652 | do { \ | |
653 | unsigned int w = ((B2) << 16) | ((B1) << 8) | (B0); \ | |
654 | int i = (N); \ | |
655 | while (i-- > 0) \ | |
656 | { \ | |
657 | *cp++ = cov_2char[w & 0x3f]; \ | |
658 | w >>= 6; \ | |
659 | } \ | |
660 | } while (0) | |
661 | ||
662 | switch (*magic) { | |
663 | case '5': | |
664 | b64_from_24bit (buf[0], buf[10], buf[20], 4); | |
665 | b64_from_24bit (buf[21], buf[1], buf[11], 4); | |
666 | b64_from_24bit (buf[12], buf[22], buf[2], 4); | |
667 | b64_from_24bit (buf[3], buf[13], buf[23], 4); | |
668 | b64_from_24bit (buf[24], buf[4], buf[14], 4); | |
669 | b64_from_24bit (buf[15], buf[25], buf[5], 4); | |
670 | b64_from_24bit (buf[6], buf[16], buf[26], 4); | |
671 | b64_from_24bit (buf[27], buf[7], buf[17], 4); | |
672 | b64_from_24bit (buf[18], buf[28], buf[8], 4); | |
673 | b64_from_24bit (buf[9], buf[19], buf[29], 4); | |
674 | b64_from_24bit (0, buf[31], buf[30], 3); | |
675 | break; | |
676 | case '6': | |
677 | b64_from_24bit (buf[0], buf[21], buf[42], 4); | |
678 | b64_from_24bit (buf[22], buf[43], buf[1], 4); | |
679 | b64_from_24bit (buf[44], buf[2], buf[23], 4); | |
680 | b64_from_24bit (buf[3], buf[24], buf[45], 4); | |
681 | b64_from_24bit (buf[25], buf[46], buf[4], 4); | |
682 | b64_from_24bit (buf[47], buf[5], buf[26], 4); | |
683 | b64_from_24bit (buf[6], buf[27], buf[48], 4); | |
684 | b64_from_24bit (buf[28], buf[49], buf[7], 4); | |
685 | b64_from_24bit (buf[50], buf[8], buf[29], 4); | |
686 | b64_from_24bit (buf[9], buf[30], buf[51], 4); | |
687 | b64_from_24bit (buf[31], buf[52], buf[10], 4); | |
688 | b64_from_24bit (buf[53], buf[11], buf[32], 4); | |
689 | b64_from_24bit (buf[12], buf[33], buf[54], 4); | |
690 | b64_from_24bit (buf[34], buf[55], buf[13], 4); | |
691 | b64_from_24bit (buf[56], buf[14], buf[35], 4); | |
692 | b64_from_24bit (buf[15], buf[36], buf[57], 4); | |
693 | b64_from_24bit (buf[37], buf[58], buf[16], 4); | |
694 | b64_from_24bit (buf[59], buf[17], buf[38], 4); | |
695 | b64_from_24bit (buf[18], buf[39], buf[60], 4); | |
696 | b64_from_24bit (buf[40], buf[61], buf[19], 4); | |
697 | b64_from_24bit (buf[62], buf[20], buf[41], 4); | |
698 | b64_from_24bit (0, 0, buf[63], 2); | |
699 | break; | |
700 | default: | |
701 | goto err; | |
702 | } | |
703 | *cp = '\0'; | |
704 | ||
705 | return out_buf; | |
706 | ||
707 | err: | |
708 | EVP_MD_CTX_free(md2); | |
709 | EVP_MD_CTX_free(md); | |
710 | OPENSSL_free(p_bytes); | |
711 | OPENSSL_free(s_bytes); | |
712 | return NULL; | |
713 | } | |
714 | # endif | |
715 | ||
e6e7b5f3 | 716 | static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, |
0f113f3e | 717 | char *passwd, BIO *out, int quiet, int table, |
30745146 | 718 | int reverse, size_t pw_maxlen, passwd_modes mode) |
0f113f3e MC |
719 | { |
720 | char *hash = NULL; | |
721 | ||
722 | assert(salt_p != NULL); | |
723 | assert(salt_malloc_p != NULL); | |
724 | ||
725 | /* first make sure we have a salt */ | |
726 | if (!passed_salt) { | |
727 | # ifndef OPENSSL_NO_DES | |
30745146 | 728 | if (mode == passwd_crypt) { |
0f113f3e | 729 | if (*salt_malloc_p == NULL) { |
68dc6824 | 730 | *salt_p = *salt_malloc_p = app_malloc(3, "salt buffer"); |
0f113f3e | 731 | } |
266483d2 | 732 | if (RAND_bytes((unsigned char *)*salt_p, 2) <= 0) |
7e1b7485 | 733 | goto end; |
0f113f3e MC |
734 | (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */ |
735 | (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */ | |
736 | (*salt_p)[2] = 0; | |
737 | # ifdef CHARSET_EBCDIC | |
738 | ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert back | |
739 | * to ASCII */ | |
740 | # endif | |
741 | } | |
742 | # endif /* !OPENSSL_NO_DES */ | |
743 | ||
744 | # ifndef NO_MD5CRYPT_1 | |
30745146 | 745 | if (mode == passwd_md5 || mode == passwd_apr1) { |
0f113f3e MC |
746 | int i; |
747 | ||
748 | if (*salt_malloc_p == NULL) { | |
68dc6824 | 749 | *salt_p = *salt_malloc_p = app_malloc(9, "salt buffer"); |
0f113f3e | 750 | } |
266483d2 | 751 | if (RAND_bytes((unsigned char *)*salt_p, 8) <= 0) |
7e1b7485 | 752 | goto end; |
0f113f3e MC |
753 | |
754 | for (i = 0; i < 8; i++) | |
755 | (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ | |
756 | (*salt_p)[8] = 0; | |
757 | } | |
758 | # endif /* !NO_MD5CRYPT_1 */ | |
4e57a12b RL |
759 | |
760 | # ifndef NO_SHACRYPT | |
30745146 | 761 | if (mode == passwd_sha256 || mode == passwd_sha512) { |
4e57a12b RL |
762 | int i; |
763 | ||
764 | if (*salt_malloc_p == NULL) { | |
765 | *salt_p = *salt_malloc_p = app_malloc(17, "salt buffer"); | |
766 | } | |
767 | if (RAND_bytes((unsigned char *)*salt_p, 16) <= 0) | |
768 | goto end; | |
769 | ||
770 | for (i = 0; i < 16; i++) | |
771 | (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ | |
772 | (*salt_p)[16] = 0; | |
773 | } | |
774 | # endif /* !NO_SHACRYPT */ | |
0f113f3e MC |
775 | } |
776 | ||
777 | assert(*salt_p != NULL); | |
778 | ||
779 | /* truncate password if necessary */ | |
780 | if ((strlen(passwd) > pw_maxlen)) { | |
781 | if (!quiet) | |
782 | /* | |
783 | * XXX: really we should know how to print a size_t, not cast it | |
784 | */ | |
785 | BIO_printf(bio_err, | |
786 | "Warning: truncating password to %u characters\n", | |
787 | (unsigned)pw_maxlen); | |
788 | passwd[pw_maxlen] = 0; | |
789 | } | |
790 | assert(strlen(passwd) <= pw_maxlen); | |
791 | ||
792 | /* now compute password hash */ | |
793 | # ifndef OPENSSL_NO_DES | |
30745146 | 794 | if (mode == passwd_crypt) |
0f113f3e MC |
795 | hash = DES_crypt(passwd, *salt_p); |
796 | # endif | |
797 | # ifndef NO_MD5CRYPT_1 | |
30745146 RL |
798 | if (mode == passwd_md5 || mode == passwd_apr1) |
799 | hash = md5crypt(passwd, (mode == passwd_md5 ? "1" : "apr1"), *salt_p); | |
4e57a12b RL |
800 | # endif |
801 | # ifndef NO_SHACRYPT | |
30745146 RL |
802 | if (mode == passwd_sha256 || mode == passwd_sha512) |
803 | hash = shacrypt(passwd, (mode == passwd_sha256 ? "5" : "6"), *salt_p); | |
0f113f3e MC |
804 | # endif |
805 | assert(hash != NULL); | |
806 | ||
807 | if (table && !reverse) | |
808 | BIO_printf(out, "%s\t%s\n", passwd, hash); | |
809 | else if (table && reverse) | |
810 | BIO_printf(out, "%s\t%s\n", hash, passwd); | |
811 | else | |
812 | BIO_printf(out, "%s\n", hash); | |
2a600d7a | 813 | return 1; |
7e1b7485 RS |
814 | |
815 | end: | |
2a600d7a | 816 | return 0; |
0f113f3e | 817 | } |
3ebf0be1 | 818 | #else |
e6e7b5f3 | 819 | |
7e1b7485 | 820 | int passwd_main(int argc, char **argv) |
0f113f3e | 821 | { |
7768e116 RS |
822 | BIO_printf(bio_err, "Program not available.\n"); |
823 | return (1); | |
0f113f3e | 824 | } |
3ebf0be1 | 825 | #endif |