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Commit | Line | Data |
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846e33c7 | 1 | /* |
2234212c | 2 | * Copyright 2000-2017 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 | |
17621bc2 | 10 | #include <string.h> |
0f113f3e | 11 | |
17621bc2 | 12 | #include "apps.h" |
0f113f3e | 13 | |
17621bc2 RL |
14 | #include <openssl/bio.h> |
15 | #include <openssl/err.h> | |
16 | #include <openssl/evp.h> | |
17 | #include <openssl/rand.h> | |
18 | #ifndef OPENSSL_NO_DES | |
19 | # include <openssl/des.h> | |
20 | #endif | |
21 | #include <openssl/md5.h> | |
22 | #include <openssl/sha.h> | |
0f113f3e | 23 | |
0f113f3e MC |
24 | static unsigned const char cov_2char[64] = { |
25 | /* from crypto/des/fcrypt.c */ | |
26 | 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, | |
27 | 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, | |
28 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, | |
29 | 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, | |
30 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, | |
31 | 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, | |
32 | 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, | |
33 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A | |
bb325c7d BM |
34 | }; |
35 | ||
30745146 RL |
36 | typedef enum { |
37 | passwd_unset = 0, | |
38 | passwd_crypt, | |
39 | passwd_md5, | |
40 | passwd_apr1, | |
41 | passwd_sha256, | |
037f2c3f GN |
42 | passwd_sha512, |
43 | passwd_aixmd5 | |
30745146 RL |
44 | } passwd_modes; |
45 | ||
e6e7b5f3 | 46 | static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, |
0f113f3e | 47 | char *passwd, BIO *out, int quiet, int table, |
30745146 | 48 | int reverse, size_t pw_maxlen, passwd_modes mode); |
e6e7b5f3 | 49 | |
7e1b7485 RS |
50 | typedef enum OPTION_choice { |
51 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
52 | OPT_IN, | |
53 | OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1, | |
3ee1eac2 | 54 | OPT_1, OPT_5, OPT_6, OPT_CRYPT, OPT_AIXMD5, OPT_SALT, OPT_STDIN, |
f1b8b001 | 55 | OPT_R_ENUM |
7e1b7485 RS |
56 | } OPTION_CHOICE; |
57 | ||
44c83ebd | 58 | const OPTIONS passwd_options[] = { |
7e1b7485 | 59 | {"help", OPT_HELP, '-', "Display this summary"}, |
69687aa8 | 60 | {"in", OPT_IN, '<', "Read passwords from file"}, |
7e1b7485 RS |
61 | {"noverify", OPT_NOVERIFY, '-', |
62 | "Never verify when reading password from terminal"}, | |
63 | {"quiet", OPT_QUIET, '-', "No warnings"}, | |
64 | {"table", OPT_TABLE, '-', "Format output as table"}, | |
65 | {"reverse", OPT_REVERSE, '-', "Switch table columns"}, | |
9c3bcfa0 RS |
66 | {"salt", OPT_SALT, 's', "Use provided salt"}, |
67 | {"stdin", OPT_STDIN, '-', "Read passwords from stdin"}, | |
4e57a12b RL |
68 | {"6", OPT_6, '-', "SHA512-based password algorithm"}, |
69 | {"5", OPT_5, '-', "SHA256-based password algorithm"}, | |
7e1b7485 RS |
70 | {"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"}, |
71 | {"1", OPT_1, '-', "MD5-based password algorithm"}, | |
037f2c3f | 72 | {"aixmd5", OPT_AIXMD5, '-', "AIX MD5-based password algorithm"}, |
17621bc2 | 73 | #ifndef OPENSSL_NO_DES |
7e1b7485 | 74 | {"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"}, |
17621bc2 | 75 | #endif |
3ee1eac2 | 76 | OPT_R_OPTIONS, |
7e1b7485 RS |
77 | {NULL} |
78 | }; | |
07fb39c3 | 79 | |
7e1b7485 | 80 | int passwd_main(int argc, char **argv) |
0f113f3e | 81 | { |
7e1b7485 RS |
82 | BIO *in = NULL; |
83 | char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL; | |
84 | char *salt_malloc = NULL, *passwd_malloc = NULL, *prog; | |
85 | OPTION_CHOICE o; | |
923b1857 | 86 | int in_stdin = 0, pw_source_defined = 0; |
17621bc2 | 87 | #ifndef OPENSSL_NO_UI_CONSOLE |
923b1857 | 88 | int in_noverify = 0; |
17621bc2 | 89 | #endif |
0f113f3e | 90 | int passed_salt = 0, quiet = 0, table = 0, reverse = 0; |
30745146 RL |
91 | int ret = 1; |
92 | passwd_modes mode = passwd_unset; | |
93 | size_t passwd_malloc_size = 0; | |
94 | size_t pw_maxlen = 256; /* arbitrary limit, should be enough for most | |
95 | * passwords */ | |
7e1b7485 RS |
96 | |
97 | prog = opt_init(argc, argv, passwd_options); | |
98 | while ((o = opt_next()) != OPT_EOF) { | |
99 | switch (o) { | |
100 | case OPT_EOF: | |
101 | case OPT_ERR: | |
102 | opthelp: | |
103 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
104 | goto end; | |
105 | case OPT_HELP: | |
106 | opt_help(passwd_options); | |
107 | ret = 0; | |
108 | goto end; | |
109 | case OPT_IN: | |
110 | if (pw_source_defined) | |
111 | goto opthelp; | |
112 | infile = opt_arg(); | |
113 | pw_source_defined = 1; | |
114 | break; | |
115 | case OPT_NOVERIFY: | |
17621bc2 | 116 | #ifndef OPENSSL_NO_UI_CONSOLE |
0f113f3e | 117 | in_noverify = 1; |
17621bc2 | 118 | #endif |
7e1b7485 RS |
119 | break; |
120 | case OPT_QUIET: | |
0f113f3e | 121 | quiet = 1; |
7e1b7485 RS |
122 | break; |
123 | case OPT_TABLE: | |
0f113f3e | 124 | table = 1; |
7e1b7485 RS |
125 | break; |
126 | case OPT_REVERSE: | |
0f113f3e | 127 | reverse = 1; |
7e1b7485 | 128 | break; |
30745146 RL |
129 | case OPT_1: |
130 | if (mode != passwd_unset) | |
131 | goto opthelp; | |
132 | mode = passwd_md5; | |
133 | break; | |
4e57a12b | 134 | case OPT_5: |
30745146 RL |
135 | if (mode != passwd_unset) |
136 | goto opthelp; | |
137 | mode = passwd_sha256; | |
4e57a12b RL |
138 | break; |
139 | case OPT_6: | |
30745146 RL |
140 | if (mode != passwd_unset) |
141 | goto opthelp; | |
142 | mode = passwd_sha512; | |
7e1b7485 RS |
143 | break; |
144 | case OPT_APR1: | |
30745146 RL |
145 | if (mode != passwd_unset) |
146 | goto opthelp; | |
147 | mode = passwd_apr1; | |
7e1b7485 | 148 | break; |
037f2c3f GN |
149 | case OPT_AIXMD5: |
150 | if (mode != passwd_unset) | |
151 | goto opthelp; | |
152 | mode = passwd_aixmd5; | |
153 | break; | |
7e1b7485 | 154 | case OPT_CRYPT: |
17621bc2 | 155 | #ifndef OPENSSL_NO_DES |
30745146 RL |
156 | if (mode != passwd_unset) |
157 | goto opthelp; | |
158 | mode = passwd_crypt; | |
17621bc2 | 159 | #endif |
7e1b7485 RS |
160 | break; |
161 | case OPT_SALT: | |
162 | passed_salt = 1; | |
163 | salt = opt_arg(); | |
164 | break; | |
165 | case OPT_STDIN: | |
166 | if (pw_source_defined) | |
167 | goto opthelp; | |
168 | in_stdin = 1; | |
97b04399 | 169 | pw_source_defined = 1; |
7e1b7485 | 170 | break; |
3ee1eac2 RS |
171 | case OPT_R_CASES: |
172 | if (!opt_rand(o)) | |
173 | goto end; | |
174 | break; | |
7e1b7485 RS |
175 | } |
176 | } | |
177 | argc = opt_num_rest(); | |
178 | argv = opt_rest(); | |
179 | ||
2234212c | 180 | if (*argv != NULL) { |
7e1b7485 RS |
181 | if (pw_source_defined) |
182 | goto opthelp; | |
183 | pw_source_defined = 1; | |
184 | passwds = argv; | |
0f113f3e MC |
185 | } |
186 | ||
30745146 | 187 | if (mode == passwd_unset) { |
7e1b7485 | 188 | /* use default */ |
30745146 | 189 | mode = passwd_crypt; |
7e1b7485 | 190 | } |
0f113f3e | 191 | |
17621bc2 | 192 | #ifdef OPENSSL_NO_DES |
30745146 | 193 | if (mode == passwd_crypt) |
7e1b7485 | 194 | goto opthelp; |
17621bc2 | 195 | #endif |
0f113f3e | 196 | |
4de9913b | 197 | if (infile != NULL && in_stdin) { |
7e1b7485 RS |
198 | BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog); |
199 | goto end; | |
0f113f3e MC |
200 | } |
201 | ||
4de9913b RL |
202 | if (infile != NULL || in_stdin) { |
203 | /* | |
204 | * If in_stdin is true, we know that infile is NULL, and that | |
205 | * bio_open_default() will give us back an alias for stdin. | |
206 | */ | |
207 | in = bio_open_default(infile, 'r', FORMAT_TEXT); | |
208 | if (in == NULL) | |
209 | goto end; | |
210 | } | |
0f113f3e | 211 | |
30745146 | 212 | if (mode == passwd_crypt) |
0f113f3e | 213 | pw_maxlen = 8; |
0f113f3e MC |
214 | |
215 | if (passwds == NULL) { | |
216 | /* no passwords on the command line */ | |
217 | ||
218 | passwd_malloc_size = pw_maxlen + 2; | |
68dc6824 RS |
219 | /* longer than necessary so that we can warn about truncation */ |
220 | passwd = passwd_malloc = | |
221 | app_malloc(passwd_malloc_size, "password buffer"); | |
0f113f3e MC |
222 | } |
223 | ||
224 | if ((in == NULL) && (passwds == NULL)) { | |
72d8b823 PY |
225 | /* |
226 | * we use the following method to make sure what | |
227 | * in the 'else' section is always compiled, to | |
228 | * avoid rot of not-frequently-used code. | |
229 | */ | |
923b1857 | 230 | if (1) { |
17621bc2 | 231 | #ifndef OPENSSL_NO_UI_CONSOLE |
923b1857 RL |
232 | /* build a null-terminated list */ |
233 | static char *passwds_static[2] = { NULL, NULL }; | |
0f113f3e | 234 | |
923b1857 | 235 | passwds = passwds_static; |
72d8b823 | 236 | if (in == NULL) { |
923b1857 RL |
237 | if (EVP_read_pw_string |
238 | (passwd_malloc, passwd_malloc_size, "Password: ", | |
239 | !(passed_salt || in_noverify)) != 0) | |
240 | goto end; | |
72d8b823 | 241 | } |
923b1857 RL |
242 | passwds[0] = passwd_malloc; |
243 | } else { | |
17621bc2 | 244 | #endif |
923b1857 RL |
245 | BIO_printf(bio_err, "password required\n"); |
246 | goto end; | |
247 | } | |
0f113f3e MC |
248 | } |
249 | ||
250 | if (in == NULL) { | |
251 | assert(passwds != NULL); | |
252 | assert(*passwds != NULL); | |
253 | ||
254 | do { /* loop over list of passwords */ | |
255 | passwd = *passwds++; | |
7e1b7485 | 256 | if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out, |
30745146 | 257 | quiet, table, reverse, pw_maxlen, mode)) |
7e1b7485 | 258 | goto end; |
72d8b823 PY |
259 | } while (*passwds != NULL); |
260 | } else { | |
0f113f3e | 261 | /* in != NULL */ |
0f113f3e MC |
262 | int done; |
263 | ||
264 | assert(passwd != NULL); | |
265 | do { | |
266 | int r = BIO_gets(in, passwd, pw_maxlen + 1); | |
267 | if (r > 0) { | |
268 | char *c = (strchr(passwd, '\n')); | |
72d8b823 | 269 | if (c != NULL) { |
0f113f3e | 270 | *c = 0; /* truncate at newline */ |
72d8b823 | 271 | } else { |
0f113f3e MC |
272 | /* ignore rest of line */ |
273 | char trash[BUFSIZ]; | |
274 | do | |
275 | r = BIO_gets(in, trash, sizeof trash); | |
276 | while ((r > 0) && (!strchr(trash, '\n'))); | |
277 | } | |
278 | ||
7e1b7485 RS |
279 | if (!do_passwd |
280 | (passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet, | |
30745146 | 281 | table, reverse, pw_maxlen, mode)) |
7e1b7485 | 282 | goto end; |
0f113f3e MC |
283 | } |
284 | done = (r <= 0); | |
72d8b823 | 285 | } while (!done); |
0f113f3e MC |
286 | } |
287 | ret = 0; | |
288 | ||
7e1b7485 | 289 | end: |
0f113f3e | 290 | ERR_print_errors(bio_err); |
b548a1f1 RS |
291 | OPENSSL_free(salt_malloc); |
292 | OPENSSL_free(passwd_malloc); | |
ca3a82c3 | 293 | BIO_free(in); |
7e1b7485 | 294 | return (ret); |
0f113f3e MC |
295 | } |
296 | ||
0f113f3e MC |
297 | /* |
298 | * MD5-based password algorithm (should probably be available as a library | |
299 | * function; then the static buffer would not be acceptable). For magic | |
300 | * string "1", this should be compatible to the MD5-based BSD password | |
301 | * algorithm. For 'magic' string "apr1", this is compatible to the MD5-based | |
302 | * Apache password algorithm. (Apparently, the Apache password algorithm is | |
303 | * identical except that the 'magic' string was changed -- the laziest | |
304 | * application of the NIH principle I've ever encountered.) | |
1f4643a2 BM |
305 | */ |
306 | static char *md5crypt(const char *passwd, const char *magic, const char *salt) | |
0f113f3e MC |
307 | { |
308 | /* "$apr1$..salt..$.......md5hash..........\0" */ | |
309 | static char out_buf[6 + 9 + 24 + 2]; | |
310 | unsigned char buf[MD5_DIGEST_LENGTH]; | |
311 | char *salt_out; | |
312 | int n; | |
313 | unsigned int i; | |
d166ed8c | 314 | EVP_MD_CTX *md = NULL, *md2 = NULL; |
f6c460e8 | 315 | size_t passwd_len, salt_len, magic_len; |
0f113f3e MC |
316 | |
317 | passwd_len = strlen(passwd); | |
037f2c3f GN |
318 | |
319 | out_buf[0] = 0; | |
f6c460e8 F |
320 | magic_len = strlen(magic); |
321 | ||
037f2c3f GN |
322 | if (magic_len > 0) { |
323 | out_buf[0] = '$'; | |
324 | out_buf[1] = 0; | |
325 | ||
326 | if (magic_len > 4) /* assert it's "1" or "apr1" */ | |
327 | return NULL; | |
328 | ||
329 | OPENSSL_strlcat(out_buf, magic, sizeof out_buf); | |
330 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
331 | } | |
f6c460e8 | 332 | |
7644a9ae | 333 | OPENSSL_strlcat(out_buf, salt, sizeof out_buf); |
f6c460e8 | 334 | |
edbff8da | 335 | if (strlen(out_buf) > 6 + 8) /* assert "$apr1$..salt.." */ |
f6c460e8 F |
336 | return NULL; |
337 | ||
037f2c3f GN |
338 | salt_out = out_buf; |
339 | if (magic_len > 0) | |
340 | salt_out += 2 + magic_len; | |
0f113f3e | 341 | salt_len = strlen(salt_out); |
f6c460e8 F |
342 | |
343 | if (salt_len > 8) | |
344 | return NULL; | |
0f113f3e | 345 | |
bfb0641f | 346 | md = EVP_MD_CTX_new(); |
d166ed8c DSH |
347 | if (md == NULL |
348 | || !EVP_DigestInit_ex(md, EVP_md5(), NULL) | |
037f2c3f GN |
349 | || !EVP_DigestUpdate(md, passwd, passwd_len)) |
350 | goto err; | |
351 | ||
352 | if (magic_len > 0) | |
353 | if (!EVP_DigestUpdate(md, "$", 1) | |
354 | || !EVP_DigestUpdate(md, magic, magic_len) | |
355 | || !EVP_DigestUpdate(md, "$", 1)) | |
356 | goto err; | |
357 | ||
358 | if (!EVP_DigestUpdate(md, salt_out, salt_len)) | |
9f9f962d | 359 | goto err; |
6e59a892 | 360 | |
bfb0641f | 361 | md2 = EVP_MD_CTX_new(); |
d166ed8c DSH |
362 | if (md2 == NULL |
363 | || !EVP_DigestInit_ex(md2, EVP_md5(), NULL) | |
364 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
365 | || !EVP_DigestUpdate(md2, salt_out, salt_len) | |
366 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
367 | || !EVP_DigestFinal_ex(md2, buf, NULL)) | |
368 | goto err; | |
369 | ||
370 | for (i = passwd_len; i > sizeof buf; i -= sizeof buf) { | |
371 | if (!EVP_DigestUpdate(md, buf, sizeof buf)) | |
372 | goto err; | |
373 | } | |
374 | if (!EVP_DigestUpdate(md, buf, i)) | |
375 | goto err; | |
0f113f3e MC |
376 | |
377 | n = passwd_len; | |
378 | while (n) { | |
d166ed8c DSH |
379 | if (!EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1)) |
380 | goto err; | |
0f113f3e MC |
381 | n >>= 1; |
382 | } | |
d166ed8c DSH |
383 | if (!EVP_DigestFinal_ex(md, buf, NULL)) |
384 | return NULL; | |
0f113f3e MC |
385 | |
386 | for (i = 0; i < 1000; i++) { | |
d166ed8c DSH |
387 | if (!EVP_DigestInit_ex(md2, EVP_md5(), NULL)) |
388 | goto err; | |
389 | if (!EVP_DigestUpdate(md2, | |
390 | (i & 1) ? (unsigned const char *)passwd : buf, | |
391 | (i & 1) ? passwd_len : sizeof buf)) | |
392 | goto err; | |
393 | if (i % 3) { | |
394 | if (!EVP_DigestUpdate(md2, salt_out, salt_len)) | |
395 | goto err; | |
396 | } | |
397 | if (i % 7) { | |
398 | if (!EVP_DigestUpdate(md2, passwd, passwd_len)) | |
399 | goto err; | |
400 | } | |
401 | if (!EVP_DigestUpdate(md2, | |
402 | (i & 1) ? buf : (unsigned const char *)passwd, | |
403 | (i & 1) ? sizeof buf : passwd_len)) | |
404 | goto err; | |
405 | if (!EVP_DigestFinal_ex(md2, buf, NULL)) | |
406 | goto err; | |
0f113f3e | 407 | } |
bfb0641f RL |
408 | EVP_MD_CTX_free(md2); |
409 | EVP_MD_CTX_free(md); | |
d166ed8c DSH |
410 | md2 = NULL; |
411 | md = NULL; | |
0f113f3e MC |
412 | |
413 | { | |
414 | /* transform buf into output string */ | |
0f113f3e MC |
415 | unsigned char buf_perm[sizeof buf]; |
416 | int dest, source; | |
417 | char *output; | |
418 | ||
419 | /* silly output permutation */ | |
420 | for (dest = 0, source = 0; dest < 14; | |
421 | dest++, source = (source + 6) % 17) | |
422 | buf_perm[dest] = buf[source]; | |
423 | buf_perm[14] = buf[5]; | |
424 | buf_perm[15] = buf[11]; | |
17621bc2 | 425 | # ifndef PEDANTIC /* Unfortunately, this generates a "no |
0f113f3e MC |
426 | * effect" warning */ |
427 | assert(16 == sizeof buf_perm); | |
17621bc2 | 428 | # endif |
0f113f3e MC |
429 | |
430 | output = salt_out + salt_len; | |
431 | assert(output == out_buf + strlen(out_buf)); | |
432 | ||
433 | *output++ = '$'; | |
434 | ||
435 | for (i = 0; i < 15; i += 3) { | |
436 | *output++ = cov_2char[buf_perm[i + 2] & 0x3f]; | |
437 | *output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) | | |
438 | (buf_perm[i + 2] >> 6)]; | |
439 | *output++ = cov_2char[((buf_perm[i] & 3) << 4) | | |
440 | (buf_perm[i + 1] >> 4)]; | |
441 | *output++ = cov_2char[buf_perm[i] >> 2]; | |
442 | } | |
443 | assert(i == 15); | |
444 | *output++ = cov_2char[buf_perm[i] & 0x3f]; | |
445 | *output++ = cov_2char[buf_perm[i] >> 6]; | |
446 | *output = 0; | |
447 | assert(strlen(out_buf) < sizeof(out_buf)); | |
448 | } | |
0f113f3e MC |
449 | |
450 | return out_buf; | |
d166ed8c DSH |
451 | |
452 | err: | |
453 | EVP_MD_CTX_free(md2); | |
454 | EVP_MD_CTX_free(md); | |
455 | return NULL; | |
0f113f3e | 456 | } |
e6e7b5f3 | 457 | |
4e57a12b RL |
458 | /* |
459 | * SHA based password algorithm, describe by Ulrich Drepper here: | |
460 | * https://www.akkadia.org/drepper/SHA-crypt.txt | |
461 | * (note that it's in the public domain) | |
462 | */ | |
463 | static char *shacrypt(const char *passwd, const char *magic, const char *salt) | |
464 | { | |
465 | /* Prefix for optional rounds specification. */ | |
466 | static const char rounds_prefix[] = "rounds="; | |
467 | /* Maximum salt string length. */ | |
17621bc2 | 468 | # define SALT_LEN_MAX 16 |
4e57a12b | 469 | /* Default number of rounds if not explicitly specified. */ |
17621bc2 | 470 | # define ROUNDS_DEFAULT 5000 |
4e57a12b | 471 | /* Minimum number of rounds. */ |
17621bc2 | 472 | # define ROUNDS_MIN 1000 |
4e57a12b | 473 | /* Maximum number of rounds. */ |
17621bc2 | 474 | # define ROUNDS_MAX 999999999 |
4e57a12b RL |
475 | |
476 | /* "$6$rounds=<N>$......salt......$...shahash(up to 86 chars)...\0" */ | |
477 | static char out_buf[3 + 17 + 17 + 86 + 1]; | |
478 | unsigned char buf[SHA512_DIGEST_LENGTH]; | |
479 | unsigned char temp_buf[SHA512_DIGEST_LENGTH]; | |
480 | size_t buf_size = 0; | |
481 | char salt_copy[17]; /* Max 16 chars plus '\0' */ | |
482 | size_t n; | |
483 | EVP_MD_CTX *md = NULL, *md2 = NULL; | |
484 | const EVP_MD *sha = NULL; | |
485 | size_t passwd_len, salt_len, magic_len; | |
a4c74e88 | 486 | unsigned int rounds = 5000; /* Default */ |
4e57a12b RL |
487 | char rounds_custom = 0; |
488 | char *p_bytes = NULL; | |
489 | char *s_bytes = NULL; | |
490 | char *cp = NULL; | |
491 | ||
492 | passwd_len = strlen(passwd); | |
493 | magic_len = strlen(magic); | |
494 | ||
495 | /* assert it's "5" or "6" */ | |
496 | if (magic_len != 1) | |
497 | return NULL; | |
498 | ||
499 | switch (magic[0]) { | |
500 | case '5': | |
501 | sha = EVP_sha256(); | |
502 | buf_size = 32; | |
503 | break; | |
504 | case '6': | |
505 | sha = EVP_sha512(); | |
506 | buf_size = 64; | |
507 | break; | |
508 | default: | |
509 | return NULL; | |
510 | } | |
511 | ||
512 | if (strncmp(salt, rounds_prefix, sizeof(rounds_prefix) - 1) == 0) { | |
513 | const char *num = salt + sizeof(rounds_prefix) - 1; | |
514 | char *endp; | |
515 | unsigned long int srounds = strtoul (num, &endp, 10); | |
516 | if (*endp == '$') { | |
517 | salt = endp + 1; | |
518 | if (srounds > ROUNDS_MAX) | |
519 | rounds = ROUNDS_MAX; | |
520 | else if (srounds < ROUNDS_MIN) | |
521 | rounds = ROUNDS_MIN; | |
522 | else | |
a4c74e88 | 523 | rounds = (unsigned int)srounds; |
4e57a12b RL |
524 | rounds_custom = 1; |
525 | } else { | |
526 | return NULL; | |
527 | } | |
528 | } | |
529 | ||
530 | /* The salt gets truncated to 16 chars */ | |
531 | OPENSSL_strlcpy(salt_copy, salt, sizeof salt_copy); | |
532 | salt_len = strlen(salt_copy); | |
533 | ||
534 | out_buf[0] = 0; | |
535 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
536 | OPENSSL_strlcat(out_buf, magic, sizeof out_buf); | |
537 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
538 | if (rounds_custom) { | |
dbaa069a | 539 | char tmp_buf[80]; /* "rounds=999999999" */ |
a4c74e88 | 540 | sprintf(tmp_buf, "rounds=%u", rounds); |
4e57a12b RL |
541 | OPENSSL_strlcat(out_buf, tmp_buf, sizeof out_buf); |
542 | OPENSSL_strlcat(out_buf, "$", sizeof out_buf); | |
543 | } | |
544 | OPENSSL_strlcat(out_buf, salt_copy, sizeof out_buf); | |
545 | ||
546 | /* assert "$5$rounds=999999999$......salt......" */ | |
547 | if (strlen(out_buf) > 3 + 17 * rounds_custom + salt_len ) | |
548 | return NULL; | |
549 | ||
550 | md = EVP_MD_CTX_new(); | |
551 | if (md == NULL | |
552 | || !EVP_DigestInit_ex(md, sha, NULL) | |
553 | || !EVP_DigestUpdate(md, passwd, passwd_len) | |
554 | || !EVP_DigestUpdate(md, salt_copy, salt_len)) | |
555 | goto err; | |
556 | ||
557 | md2 = EVP_MD_CTX_new(); | |
558 | if (md2 == NULL | |
559 | || !EVP_DigestInit_ex(md2, sha, NULL) | |
560 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
561 | || !EVP_DigestUpdate(md2, salt_copy, salt_len) | |
562 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
563 | || !EVP_DigestFinal_ex(md2, buf, NULL)) | |
564 | goto err; | |
565 | ||
566 | for (n = passwd_len; n > buf_size; n -= buf_size) { | |
567 | if (!EVP_DigestUpdate(md, buf, buf_size)) | |
568 | goto err; | |
569 | } | |
570 | if (!EVP_DigestUpdate(md, buf, n)) | |
571 | goto err; | |
572 | ||
573 | n = passwd_len; | |
574 | while (n) { | |
575 | if (!EVP_DigestUpdate(md, | |
576 | (n & 1) ? buf : (unsigned const char *)passwd, | |
577 | (n & 1) ? buf_size : passwd_len)) | |
578 | goto err; | |
579 | n >>= 1; | |
580 | } | |
581 | if (!EVP_DigestFinal_ex(md, buf, NULL)) | |
582 | return NULL; | |
583 | ||
584 | /* P sequence */ | |
585 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
586 | goto err; | |
587 | ||
588 | for (n = passwd_len; n > 0; n--) | |
589 | if (!EVP_DigestUpdate(md2, passwd, passwd_len)) | |
590 | goto err; | |
591 | ||
592 | if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) | |
593 | return NULL; | |
594 | ||
595 | if ((p_bytes = OPENSSL_zalloc(passwd_len)) == NULL) | |
596 | goto err; | |
597 | for (cp = p_bytes, n = passwd_len; n > buf_size; n -= buf_size, cp += buf_size) | |
598 | memcpy(cp, temp_buf, buf_size); | |
599 | memcpy(cp, temp_buf, n); | |
600 | ||
601 | /* S sequence */ | |
602 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
603 | goto err; | |
604 | ||
605 | for (n = 16 + buf[0]; n > 0; n--) | |
606 | if (!EVP_DigestUpdate(md2, salt, salt_len)) | |
607 | goto err; | |
608 | ||
609 | if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) | |
610 | return NULL; | |
611 | ||
612 | if ((s_bytes = OPENSSL_zalloc(salt_len)) == NULL) | |
613 | goto err; | |
614 | for (cp = s_bytes, n = salt_len; n > buf_size; n -= buf_size, cp += buf_size) | |
615 | memcpy(cp, temp_buf, buf_size); | |
616 | memcpy(cp, temp_buf, n); | |
617 | ||
618 | for (n = 0; n < rounds; n++) { | |
619 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
620 | goto err; | |
621 | if (!EVP_DigestUpdate(md2, | |
622 | (n & 1) ? (unsigned const char *)p_bytes : buf, | |
623 | (n & 1) ? passwd_len : buf_size)) | |
624 | goto err; | |
625 | if (n % 3) { | |
626 | if (!EVP_DigestUpdate(md2, s_bytes, salt_len)) | |
627 | goto err; | |
628 | } | |
629 | if (n % 7) { | |
630 | if (!EVP_DigestUpdate(md2, p_bytes, passwd_len)) | |
631 | goto err; | |
632 | } | |
633 | if (!EVP_DigestUpdate(md2, | |
634 | (n & 1) ? buf : (unsigned const char *)p_bytes, | |
635 | (n & 1) ? buf_size : passwd_len)) | |
636 | goto err; | |
637 | if (!EVP_DigestFinal_ex(md2, buf, NULL)) | |
638 | goto err; | |
639 | } | |
640 | EVP_MD_CTX_free(md2); | |
641 | EVP_MD_CTX_free(md); | |
642 | md2 = NULL; | |
643 | md = NULL; | |
644 | OPENSSL_free(p_bytes); | |
645 | OPENSSL_free(s_bytes); | |
646 | p_bytes = NULL; | |
647 | s_bytes = NULL; | |
648 | ||
649 | cp = out_buf + strlen(out_buf); | |
650 | *cp++ = '$'; | |
651 | ||
17621bc2 | 652 | # define b64_from_24bit(B2, B1, B0, N) \ |
4e57a12b RL |
653 | do { \ |
654 | unsigned int w = ((B2) << 16) | ((B1) << 8) | (B0); \ | |
655 | int i = (N); \ | |
656 | while (i-- > 0) \ | |
657 | { \ | |
658 | *cp++ = cov_2char[w & 0x3f]; \ | |
659 | w >>= 6; \ | |
660 | } \ | |
661 | } while (0) | |
662 | ||
663 | switch (*magic) { | |
664 | case '5': | |
665 | b64_from_24bit (buf[0], buf[10], buf[20], 4); | |
666 | b64_from_24bit (buf[21], buf[1], buf[11], 4); | |
667 | b64_from_24bit (buf[12], buf[22], buf[2], 4); | |
668 | b64_from_24bit (buf[3], buf[13], buf[23], 4); | |
669 | b64_from_24bit (buf[24], buf[4], buf[14], 4); | |
670 | b64_from_24bit (buf[15], buf[25], buf[5], 4); | |
671 | b64_from_24bit (buf[6], buf[16], buf[26], 4); | |
672 | b64_from_24bit (buf[27], buf[7], buf[17], 4); | |
673 | b64_from_24bit (buf[18], buf[28], buf[8], 4); | |
674 | b64_from_24bit (buf[9], buf[19], buf[29], 4); | |
675 | b64_from_24bit (0, buf[31], buf[30], 3); | |
676 | break; | |
677 | case '6': | |
678 | b64_from_24bit (buf[0], buf[21], buf[42], 4); | |
679 | b64_from_24bit (buf[22], buf[43], buf[1], 4); | |
680 | b64_from_24bit (buf[44], buf[2], buf[23], 4); | |
681 | b64_from_24bit (buf[3], buf[24], buf[45], 4); | |
682 | b64_from_24bit (buf[25], buf[46], buf[4], 4); | |
683 | b64_from_24bit (buf[47], buf[5], buf[26], 4); | |
684 | b64_from_24bit (buf[6], buf[27], buf[48], 4); | |
685 | b64_from_24bit (buf[28], buf[49], buf[7], 4); | |
686 | b64_from_24bit (buf[50], buf[8], buf[29], 4); | |
687 | b64_from_24bit (buf[9], buf[30], buf[51], 4); | |
688 | b64_from_24bit (buf[31], buf[52], buf[10], 4); | |
689 | b64_from_24bit (buf[53], buf[11], buf[32], 4); | |
690 | b64_from_24bit (buf[12], buf[33], buf[54], 4); | |
691 | b64_from_24bit (buf[34], buf[55], buf[13], 4); | |
692 | b64_from_24bit (buf[56], buf[14], buf[35], 4); | |
693 | b64_from_24bit (buf[15], buf[36], buf[57], 4); | |
694 | b64_from_24bit (buf[37], buf[58], buf[16], 4); | |
695 | b64_from_24bit (buf[59], buf[17], buf[38], 4); | |
696 | b64_from_24bit (buf[18], buf[39], buf[60], 4); | |
697 | b64_from_24bit (buf[40], buf[61], buf[19], 4); | |
698 | b64_from_24bit (buf[62], buf[20], buf[41], 4); | |
699 | b64_from_24bit (0, 0, buf[63], 2); | |
700 | break; | |
701 | default: | |
702 | goto err; | |
703 | } | |
704 | *cp = '\0'; | |
705 | ||
706 | return out_buf; | |
707 | ||
708 | err: | |
709 | EVP_MD_CTX_free(md2); | |
710 | EVP_MD_CTX_free(md); | |
711 | OPENSSL_free(p_bytes); | |
712 | OPENSSL_free(s_bytes); | |
713 | return NULL; | |
714 | } | |
4e57a12b | 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) { | |
17621bc2 | 727 | #ifndef OPENSSL_NO_DES |
30745146 | 728 | if (mode == passwd_crypt) { |
72d8b823 | 729 | if (*salt_malloc_p == NULL) |
68dc6824 | 730 | *salt_p = *salt_malloc_p = app_malloc(3, "salt buffer"); |
266483d2 | 731 | if (RAND_bytes((unsigned char *)*salt_p, 2) <= 0) |
7e1b7485 | 732 | goto end; |
0f113f3e MC |
733 | (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */ |
734 | (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */ | |
735 | (*salt_p)[2] = 0; | |
17621bc2 | 736 | # ifdef CHARSET_EBCDIC |
0f113f3e MC |
737 | ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert back |
738 | * to ASCII */ | |
17621bc2 | 739 | # endif |
0f113f3e | 740 | } |
17621bc2 | 741 | #endif /* !OPENSSL_NO_DES */ |
0f113f3e | 742 | |
037f2c3f | 743 | if (mode == passwd_md5 || mode == passwd_apr1 || mode == passwd_aixmd5) { |
0f113f3e MC |
744 | int i; |
745 | ||
72d8b823 | 746 | if (*salt_malloc_p == NULL) |
68dc6824 | 747 | *salt_p = *salt_malloc_p = app_malloc(9, "salt buffer"); |
266483d2 | 748 | if (RAND_bytes((unsigned char *)*salt_p, 8) <= 0) |
7e1b7485 | 749 | goto end; |
0f113f3e MC |
750 | |
751 | for (i = 0; i < 8; i++) | |
752 | (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ | |
753 | (*salt_p)[8] = 0; | |
754 | } | |
4e57a12b | 755 | |
30745146 | 756 | if (mode == passwd_sha256 || mode == passwd_sha512) { |
4e57a12b RL |
757 | int i; |
758 | ||
72d8b823 | 759 | if (*salt_malloc_p == NULL) |
4e57a12b | 760 | *salt_p = *salt_malloc_p = app_malloc(17, "salt buffer"); |
4e57a12b RL |
761 | if (RAND_bytes((unsigned char *)*salt_p, 16) <= 0) |
762 | goto end; | |
763 | ||
764 | for (i = 0; i < 16; i++) | |
765 | (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ | |
766 | (*salt_p)[16] = 0; | |
767 | } | |
0f113f3e MC |
768 | } |
769 | ||
770 | assert(*salt_p != NULL); | |
771 | ||
772 | /* truncate password if necessary */ | |
773 | if ((strlen(passwd) > pw_maxlen)) { | |
774 | if (!quiet) | |
775 | /* | |
776 | * XXX: really we should know how to print a size_t, not cast it | |
777 | */ | |
778 | BIO_printf(bio_err, | |
779 | "Warning: truncating password to %u characters\n", | |
780 | (unsigned)pw_maxlen); | |
781 | passwd[pw_maxlen] = 0; | |
782 | } | |
783 | assert(strlen(passwd) <= pw_maxlen); | |
784 | ||
785 | /* now compute password hash */ | |
17621bc2 | 786 | #ifndef OPENSSL_NO_DES |
30745146 | 787 | if (mode == passwd_crypt) |
0f113f3e | 788 | hash = DES_crypt(passwd, *salt_p); |
17621bc2 | 789 | #endif |
30745146 RL |
790 | if (mode == passwd_md5 || mode == passwd_apr1) |
791 | hash = md5crypt(passwd, (mode == passwd_md5 ? "1" : "apr1"), *salt_p); | |
037f2c3f GN |
792 | if (mode == passwd_aixmd5) |
793 | hash = md5crypt(passwd, "", *salt_p); | |
30745146 RL |
794 | if (mode == passwd_sha256 || mode == passwd_sha512) |
795 | hash = shacrypt(passwd, (mode == passwd_sha256 ? "5" : "6"), *salt_p); | |
0f113f3e MC |
796 | assert(hash != NULL); |
797 | ||
798 | if (table && !reverse) | |
799 | BIO_printf(out, "%s\t%s\n", passwd, hash); | |
800 | else if (table && reverse) | |
801 | BIO_printf(out, "%s\t%s\n", hash, passwd); | |
802 | else | |
803 | BIO_printf(out, "%s\n", hash); | |
2a600d7a | 804 | return 1; |
7e1b7485 RS |
805 | |
806 | end: | |
2a600d7a | 807 | return 0; |
0f113f3e | 808 | } |