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Commit | Line | Data |
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846e33c7 | 1 | /* |
6738bf14 | 2 | * Copyright 2000-2018 The OpenSSL Project Authors. All Rights Reserved. |
7e1b7485 | 3 | * |
dffa7520 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
846e33c7 RS |
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" |
dab2cd68 | 13 | #include "progs.h" |
0f113f3e | 14 | |
17621bc2 RL |
15 | #include <openssl/bio.h> |
16 | #include <openssl/err.h> | |
17 | #include <openssl/evp.h> | |
18 | #include <openssl/rand.h> | |
19 | #ifndef OPENSSL_NO_DES | |
20 | # include <openssl/des.h> | |
21 | #endif | |
22 | #include <openssl/md5.h> | |
23 | #include <openssl/sha.h> | |
0f113f3e | 24 | |
0f113f3e MC |
25 | static unsigned const char cov_2char[64] = { |
26 | /* from crypto/des/fcrypt.c */ | |
27 | 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, | |
28 | 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, | |
29 | 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C, | |
30 | 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54, | |
31 | 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62, | |
32 | 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, | |
33 | 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72, | |
34 | 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A | |
bb325c7d BM |
35 | }; |
36 | ||
0f3ffbd1 RL |
37 | static const char ascii_dollar[] = { 0x24, 0x00 }; |
38 | ||
30745146 RL |
39 | typedef enum { |
40 | passwd_unset = 0, | |
41 | passwd_crypt, | |
42 | passwd_md5, | |
43 | passwd_apr1, | |
44 | passwd_sha256, | |
037f2c3f GN |
45 | passwd_sha512, |
46 | passwd_aixmd5 | |
30745146 RL |
47 | } passwd_modes; |
48 | ||
e6e7b5f3 | 49 | static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, |
0f113f3e | 50 | char *passwd, BIO *out, int quiet, int table, |
30745146 | 51 | int reverse, size_t pw_maxlen, passwd_modes mode); |
e6e7b5f3 | 52 | |
7e1b7485 RS |
53 | typedef enum OPTION_choice { |
54 | OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, | |
55 | OPT_IN, | |
56 | OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1, | |
3ee1eac2 | 57 | OPT_1, OPT_5, OPT_6, OPT_CRYPT, OPT_AIXMD5, OPT_SALT, OPT_STDIN, |
f1b8b001 | 58 | OPT_R_ENUM |
7e1b7485 RS |
59 | } OPTION_CHOICE; |
60 | ||
44c83ebd | 61 | const OPTIONS passwd_options[] = { |
5388f986 | 62 | OPT_SECTION("General"), |
7e1b7485 | 63 | {"help", OPT_HELP, '-', "Display this summary"}, |
5388f986 RS |
64 | |
65 | OPT_SECTION("Input"), | |
69687aa8 | 66 | {"in", OPT_IN, '<', "Read passwords from file"}, |
7e1b7485 RS |
67 | {"noverify", OPT_NOVERIFY, '-', |
68 | "Never verify when reading password from terminal"}, | |
5388f986 RS |
69 | {"stdin", OPT_STDIN, '-', "Read passwords from stdin"}, |
70 | ||
71 | OPT_SECTION("Output"), | |
7e1b7485 RS |
72 | {"quiet", OPT_QUIET, '-', "No warnings"}, |
73 | {"table", OPT_TABLE, '-', "Format output as table"}, | |
74 | {"reverse", OPT_REVERSE, '-', "Switch table columns"}, | |
5388f986 RS |
75 | |
76 | OPT_SECTION("Cryptographic"), | |
9c3bcfa0 | 77 | {"salt", OPT_SALT, 's', "Use provided salt"}, |
4e57a12b RL |
78 | {"6", OPT_6, '-', "SHA512-based password algorithm"}, |
79 | {"5", OPT_5, '-', "SHA256-based password algorithm"}, | |
7e1b7485 RS |
80 | {"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"}, |
81 | {"1", OPT_1, '-', "MD5-based password algorithm"}, | |
037f2c3f | 82 | {"aixmd5", OPT_AIXMD5, '-', "AIX MD5-based password algorithm"}, |
17621bc2 | 83 | #ifndef OPENSSL_NO_DES |
7e1b7485 | 84 | {"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"}, |
17621bc2 | 85 | #endif |
5388f986 | 86 | |
3ee1eac2 | 87 | OPT_R_OPTIONS, |
7e1b7485 RS |
88 | {NULL} |
89 | }; | |
07fb39c3 | 90 | |
7e1b7485 | 91 | int passwd_main(int argc, char **argv) |
0f113f3e | 92 | { |
7e1b7485 RS |
93 | BIO *in = NULL; |
94 | char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL; | |
95 | char *salt_malloc = NULL, *passwd_malloc = NULL, *prog; | |
96 | OPTION_CHOICE o; | |
923b1857 | 97 | int in_stdin = 0, pw_source_defined = 0; |
17621bc2 | 98 | #ifndef OPENSSL_NO_UI_CONSOLE |
923b1857 | 99 | int in_noverify = 0; |
17621bc2 | 100 | #endif |
0f113f3e | 101 | int passed_salt = 0, quiet = 0, table = 0, reverse = 0; |
30745146 RL |
102 | int ret = 1; |
103 | passwd_modes mode = passwd_unset; | |
104 | size_t passwd_malloc_size = 0; | |
105 | size_t pw_maxlen = 256; /* arbitrary limit, should be enough for most | |
106 | * passwords */ | |
7e1b7485 RS |
107 | |
108 | prog = opt_init(argc, argv, passwd_options); | |
109 | while ((o = opt_next()) != OPT_EOF) { | |
110 | switch (o) { | |
111 | case OPT_EOF: | |
112 | case OPT_ERR: | |
113 | opthelp: | |
114 | BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); | |
115 | goto end; | |
116 | case OPT_HELP: | |
117 | opt_help(passwd_options); | |
118 | ret = 0; | |
119 | goto end; | |
120 | case OPT_IN: | |
121 | if (pw_source_defined) | |
122 | goto opthelp; | |
123 | infile = opt_arg(); | |
124 | pw_source_defined = 1; | |
125 | break; | |
126 | case OPT_NOVERIFY: | |
17621bc2 | 127 | #ifndef OPENSSL_NO_UI_CONSOLE |
0f113f3e | 128 | in_noverify = 1; |
17621bc2 | 129 | #endif |
7e1b7485 RS |
130 | break; |
131 | case OPT_QUIET: | |
0f113f3e | 132 | quiet = 1; |
7e1b7485 RS |
133 | break; |
134 | case OPT_TABLE: | |
0f113f3e | 135 | table = 1; |
7e1b7485 RS |
136 | break; |
137 | case OPT_REVERSE: | |
0f113f3e | 138 | reverse = 1; |
7e1b7485 | 139 | break; |
30745146 RL |
140 | case OPT_1: |
141 | if (mode != passwd_unset) | |
142 | goto opthelp; | |
143 | mode = passwd_md5; | |
144 | break; | |
4e57a12b | 145 | case OPT_5: |
30745146 RL |
146 | if (mode != passwd_unset) |
147 | goto opthelp; | |
148 | mode = passwd_sha256; | |
4e57a12b RL |
149 | break; |
150 | case OPT_6: | |
30745146 RL |
151 | if (mode != passwd_unset) |
152 | goto opthelp; | |
153 | mode = passwd_sha512; | |
7e1b7485 RS |
154 | break; |
155 | case OPT_APR1: | |
30745146 RL |
156 | if (mode != passwd_unset) |
157 | goto opthelp; | |
158 | mode = passwd_apr1; | |
7e1b7485 | 159 | break; |
037f2c3f GN |
160 | case OPT_AIXMD5: |
161 | if (mode != passwd_unset) | |
162 | goto opthelp; | |
163 | mode = passwd_aixmd5; | |
164 | break; | |
7e1b7485 | 165 | case OPT_CRYPT: |
17621bc2 | 166 | #ifndef OPENSSL_NO_DES |
30745146 RL |
167 | if (mode != passwd_unset) |
168 | goto opthelp; | |
169 | mode = passwd_crypt; | |
17621bc2 | 170 | #endif |
7e1b7485 RS |
171 | break; |
172 | case OPT_SALT: | |
173 | passed_salt = 1; | |
174 | salt = opt_arg(); | |
175 | break; | |
176 | case OPT_STDIN: | |
177 | if (pw_source_defined) | |
178 | goto opthelp; | |
179 | in_stdin = 1; | |
97b04399 | 180 | pw_source_defined = 1; |
7e1b7485 | 181 | break; |
3ee1eac2 RS |
182 | case OPT_R_CASES: |
183 | if (!opt_rand(o)) | |
184 | goto end; | |
185 | break; | |
7e1b7485 RS |
186 | } |
187 | } | |
188 | argc = opt_num_rest(); | |
189 | argv = opt_rest(); | |
190 | ||
2234212c | 191 | if (*argv != NULL) { |
7e1b7485 RS |
192 | if (pw_source_defined) |
193 | goto opthelp; | |
194 | pw_source_defined = 1; | |
195 | passwds = argv; | |
0f113f3e MC |
196 | } |
197 | ||
30745146 | 198 | if (mode == passwd_unset) { |
7e1b7485 | 199 | /* use default */ |
30745146 | 200 | mode = passwd_crypt; |
7e1b7485 | 201 | } |
0f113f3e | 202 | |
17621bc2 | 203 | #ifdef OPENSSL_NO_DES |
30745146 | 204 | if (mode == passwd_crypt) |
7e1b7485 | 205 | goto opthelp; |
17621bc2 | 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)) { | |
72d8b823 PY |
236 | /* |
237 | * we use the following method to make sure what | |
238 | * in the 'else' section is always compiled, to | |
239 | * avoid rot of not-frequently-used code. | |
240 | */ | |
923b1857 | 241 | if (1) { |
17621bc2 | 242 | #ifndef OPENSSL_NO_UI_CONSOLE |
923b1857 RL |
243 | /* build a null-terminated list */ |
244 | static char *passwds_static[2] = { NULL, NULL }; | |
0f113f3e | 245 | |
923b1857 | 246 | passwds = passwds_static; |
72d8b823 | 247 | if (in == NULL) { |
923b1857 RL |
248 | if (EVP_read_pw_string |
249 | (passwd_malloc, passwd_malloc_size, "Password: ", | |
250 | !(passed_salt || in_noverify)) != 0) | |
251 | goto end; | |
72d8b823 | 252 | } |
923b1857 RL |
253 | passwds[0] = passwd_malloc; |
254 | } else { | |
17621bc2 | 255 | #endif |
923b1857 RL |
256 | BIO_printf(bio_err, "password required\n"); |
257 | goto end; | |
258 | } | |
0f113f3e MC |
259 | } |
260 | ||
261 | if (in == NULL) { | |
262 | assert(passwds != NULL); | |
263 | assert(*passwds != NULL); | |
264 | ||
265 | do { /* loop over list of passwords */ | |
266 | passwd = *passwds++; | |
7e1b7485 | 267 | if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out, |
30745146 | 268 | quiet, table, reverse, pw_maxlen, mode)) |
7e1b7485 | 269 | goto end; |
72d8b823 PY |
270 | } while (*passwds != NULL); |
271 | } else { | |
0f113f3e | 272 | /* in != NULL */ |
0f113f3e MC |
273 | int done; |
274 | ||
275 | assert(passwd != NULL); | |
276 | do { | |
277 | int r = BIO_gets(in, passwd, pw_maxlen + 1); | |
278 | if (r > 0) { | |
279 | char *c = (strchr(passwd, '\n')); | |
72d8b823 | 280 | if (c != NULL) { |
0f113f3e | 281 | *c = 0; /* truncate at newline */ |
72d8b823 | 282 | } else { |
0f113f3e MC |
283 | /* ignore rest of line */ |
284 | char trash[BUFSIZ]; | |
285 | do | |
cbe29648 | 286 | r = BIO_gets(in, trash, sizeof(trash)); |
0f113f3e MC |
287 | while ((r > 0) && (!strchr(trash, '\n'))); |
288 | } | |
289 | ||
7e1b7485 RS |
290 | if (!do_passwd |
291 | (passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet, | |
30745146 | 292 | table, reverse, pw_maxlen, mode)) |
7e1b7485 | 293 | goto end; |
0f113f3e MC |
294 | } |
295 | done = (r <= 0); | |
72d8b823 | 296 | } while (!done); |
0f113f3e MC |
297 | } |
298 | ret = 0; | |
299 | ||
7e1b7485 | 300 | end: |
0f3ffbd1 | 301 | #if 0 |
0f113f3e | 302 | ERR_print_errors(bio_err); |
0f3ffbd1 | 303 | #endif |
b548a1f1 RS |
304 | OPENSSL_free(salt_malloc); |
305 | OPENSSL_free(passwd_malloc); | |
ca3a82c3 | 306 | BIO_free(in); |
26a7d938 | 307 | return ret; |
0f113f3e MC |
308 | } |
309 | ||
0f113f3e MC |
310 | /* |
311 | * MD5-based password algorithm (should probably be available as a library | |
312 | * function; then the static buffer would not be acceptable). For magic | |
313 | * string "1", this should be compatible to the MD5-based BSD password | |
314 | * algorithm. For 'magic' string "apr1", this is compatible to the MD5-based | |
315 | * Apache password algorithm. (Apparently, the Apache password algorithm is | |
316 | * identical except that the 'magic' string was changed -- the laziest | |
317 | * application of the NIH principle I've ever encountered.) | |
1f4643a2 BM |
318 | */ |
319 | static char *md5crypt(const char *passwd, const char *magic, const char *salt) | |
0f113f3e MC |
320 | { |
321 | /* "$apr1$..salt..$.......md5hash..........\0" */ | |
322 | static char out_buf[6 + 9 + 24 + 2]; | |
323 | unsigned char buf[MD5_DIGEST_LENGTH]; | |
0f3ffbd1 RL |
324 | char ascii_magic[5]; /* "apr1" plus '\0' */ |
325 | char ascii_salt[9]; /* Max 8 chars plus '\0' */ | |
326 | char *ascii_passwd = NULL; | |
0f113f3e MC |
327 | char *salt_out; |
328 | int n; | |
329 | unsigned int i; | |
d166ed8c | 330 | EVP_MD_CTX *md = NULL, *md2 = NULL; |
f6c460e8 | 331 | size_t passwd_len, salt_len, magic_len; |
0f113f3e MC |
332 | |
333 | passwd_len = strlen(passwd); | |
037f2c3f GN |
334 | |
335 | out_buf[0] = 0; | |
f6c460e8 | 336 | magic_len = strlen(magic); |
cbe29648 | 337 | OPENSSL_strlcpy(ascii_magic, magic, sizeof(ascii_magic)); |
0f3ffbd1 RL |
338 | #ifdef CHARSET_EBCDIC |
339 | if ((magic[0] & 0x80) != 0) /* High bit is 1 in EBCDIC alnums */ | |
340 | ebcdic2ascii(ascii_magic, ascii_magic, magic_len); | |
341 | #endif | |
342 | ||
343 | /* The salt gets truncated to 8 chars */ | |
cbe29648 | 344 | OPENSSL_strlcpy(ascii_salt, salt, sizeof(ascii_salt)); |
0f3ffbd1 RL |
345 | salt_len = strlen(ascii_salt); |
346 | #ifdef CHARSET_EBCDIC | |
347 | ebcdic2ascii(ascii_salt, ascii_salt, salt_len); | |
348 | #endif | |
349 | ||
350 | #ifdef CHARSET_EBCDIC | |
351 | ascii_passwd = OPENSSL_strdup(passwd); | |
352 | if (ascii_passwd == NULL) | |
353 | return NULL; | |
354 | ebcdic2ascii(ascii_passwd, ascii_passwd, passwd_len); | |
355 | passwd = ascii_passwd; | |
356 | #endif | |
f6c460e8 | 357 | |
037f2c3f | 358 | if (magic_len > 0) { |
cbe29648 | 359 | OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); |
037f2c3f GN |
360 | |
361 | if (magic_len > 4) /* assert it's "1" or "apr1" */ | |
0f3ffbd1 | 362 | goto err; |
037f2c3f | 363 | |
cbe29648 RS |
364 | OPENSSL_strlcat(out_buf, ascii_magic, sizeof(out_buf)); |
365 | OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); | |
037f2c3f | 366 | } |
f6c460e8 | 367 | |
cbe29648 | 368 | OPENSSL_strlcat(out_buf, ascii_salt, sizeof(out_buf)); |
f6c460e8 | 369 | |
edbff8da | 370 | if (strlen(out_buf) > 6 + 8) /* assert "$apr1$..salt.." */ |
0f3ffbd1 | 371 | goto err; |
f6c460e8 | 372 | |
037f2c3f GN |
373 | salt_out = out_buf; |
374 | if (magic_len > 0) | |
375 | salt_out += 2 + magic_len; | |
f6c460e8 F |
376 | |
377 | if (salt_len > 8) | |
0f3ffbd1 | 378 | goto err; |
0f113f3e | 379 | |
bfb0641f | 380 | md = EVP_MD_CTX_new(); |
d166ed8c DSH |
381 | if (md == NULL |
382 | || !EVP_DigestInit_ex(md, EVP_md5(), NULL) | |
037f2c3f GN |
383 | || !EVP_DigestUpdate(md, passwd, passwd_len)) |
384 | goto err; | |
385 | ||
386 | if (magic_len > 0) | |
0f3ffbd1 RL |
387 | if (!EVP_DigestUpdate(md, ascii_dollar, 1) |
388 | || !EVP_DigestUpdate(md, ascii_magic, magic_len) | |
389 | || !EVP_DigestUpdate(md, ascii_dollar, 1)) | |
037f2c3f GN |
390 | goto err; |
391 | ||
0f3ffbd1 | 392 | if (!EVP_DigestUpdate(md, ascii_salt, salt_len)) |
9f9f962d | 393 | goto err; |
6e59a892 | 394 | |
bfb0641f | 395 | md2 = EVP_MD_CTX_new(); |
d166ed8c DSH |
396 | if (md2 == NULL |
397 | || !EVP_DigestInit_ex(md2, EVP_md5(), NULL) | |
398 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
0f3ffbd1 | 399 | || !EVP_DigestUpdate(md2, ascii_salt, salt_len) |
d166ed8c DSH |
400 | || !EVP_DigestUpdate(md2, passwd, passwd_len) |
401 | || !EVP_DigestFinal_ex(md2, buf, NULL)) | |
402 | goto err; | |
403 | ||
cbe29648 RS |
404 | for (i = passwd_len; i > sizeof(buf); i -= sizeof(buf)) { |
405 | if (!EVP_DigestUpdate(md, buf, sizeof(buf))) | |
d166ed8c DSH |
406 | goto err; |
407 | } | |
408 | if (!EVP_DigestUpdate(md, buf, i)) | |
409 | goto err; | |
0f113f3e MC |
410 | |
411 | n = passwd_len; | |
412 | while (n) { | |
d166ed8c DSH |
413 | if (!EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1)) |
414 | goto err; | |
0f113f3e MC |
415 | n >>= 1; |
416 | } | |
d166ed8c DSH |
417 | if (!EVP_DigestFinal_ex(md, buf, NULL)) |
418 | return NULL; | |
0f113f3e MC |
419 | |
420 | for (i = 0; i < 1000; i++) { | |
d166ed8c DSH |
421 | if (!EVP_DigestInit_ex(md2, EVP_md5(), NULL)) |
422 | goto err; | |
423 | if (!EVP_DigestUpdate(md2, | |
424 | (i & 1) ? (unsigned const char *)passwd : buf, | |
cbe29648 | 425 | (i & 1) ? passwd_len : sizeof(buf))) |
d166ed8c DSH |
426 | goto err; |
427 | if (i % 3) { | |
0f3ffbd1 | 428 | if (!EVP_DigestUpdate(md2, ascii_salt, salt_len)) |
d166ed8c DSH |
429 | goto err; |
430 | } | |
431 | if (i % 7) { | |
432 | if (!EVP_DigestUpdate(md2, passwd, passwd_len)) | |
433 | goto err; | |
434 | } | |
435 | if (!EVP_DigestUpdate(md2, | |
436 | (i & 1) ? buf : (unsigned const char *)passwd, | |
cbe29648 | 437 | (i & 1) ? sizeof(buf) : passwd_len)) |
d166ed8c DSH |
438 | goto err; |
439 | if (!EVP_DigestFinal_ex(md2, buf, NULL)) | |
440 | goto err; | |
0f113f3e | 441 | } |
bfb0641f RL |
442 | EVP_MD_CTX_free(md2); |
443 | EVP_MD_CTX_free(md); | |
d166ed8c DSH |
444 | md2 = NULL; |
445 | md = NULL; | |
0f113f3e MC |
446 | |
447 | { | |
448 | /* transform buf into output string */ | |
cbe29648 | 449 | unsigned char buf_perm[sizeof(buf)]; |
0f113f3e MC |
450 | int dest, source; |
451 | char *output; | |
452 | ||
453 | /* silly output permutation */ | |
454 | for (dest = 0, source = 0; dest < 14; | |
455 | dest++, source = (source + 6) % 17) | |
456 | buf_perm[dest] = buf[source]; | |
457 | buf_perm[14] = buf[5]; | |
458 | buf_perm[15] = buf[11]; | |
17621bc2 | 459 | # ifndef PEDANTIC /* Unfortunately, this generates a "no |
0f113f3e | 460 | * effect" warning */ |
cbe29648 | 461 | assert(16 == sizeof(buf_perm)); |
17621bc2 | 462 | # endif |
0f113f3e MC |
463 | |
464 | output = salt_out + salt_len; | |
465 | assert(output == out_buf + strlen(out_buf)); | |
466 | ||
0f3ffbd1 | 467 | *output++ = ascii_dollar[0]; |
0f113f3e MC |
468 | |
469 | for (i = 0; i < 15; i += 3) { | |
470 | *output++ = cov_2char[buf_perm[i + 2] & 0x3f]; | |
471 | *output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) | | |
472 | (buf_perm[i + 2] >> 6)]; | |
473 | *output++ = cov_2char[((buf_perm[i] & 3) << 4) | | |
474 | (buf_perm[i + 1] >> 4)]; | |
475 | *output++ = cov_2char[buf_perm[i] >> 2]; | |
476 | } | |
477 | assert(i == 15); | |
478 | *output++ = cov_2char[buf_perm[i] & 0x3f]; | |
479 | *output++ = cov_2char[buf_perm[i] >> 6]; | |
480 | *output = 0; | |
481 | assert(strlen(out_buf) < sizeof(out_buf)); | |
0f3ffbd1 RL |
482 | #ifdef CHARSET_EBCDIC |
483 | ascii2ebcdic(out_buf, out_buf, strlen(out_buf)); | |
484 | #endif | |
0f113f3e | 485 | } |
0f113f3e MC |
486 | |
487 | return out_buf; | |
d166ed8c DSH |
488 | |
489 | err: | |
0f3ffbd1 | 490 | OPENSSL_free(ascii_passwd); |
d166ed8c DSH |
491 | EVP_MD_CTX_free(md2); |
492 | EVP_MD_CTX_free(md); | |
493 | return NULL; | |
0f113f3e | 494 | } |
e6e7b5f3 | 495 | |
4e57a12b RL |
496 | /* |
497 | * SHA based password algorithm, describe by Ulrich Drepper here: | |
498 | * https://www.akkadia.org/drepper/SHA-crypt.txt | |
499 | * (note that it's in the public domain) | |
500 | */ | |
501 | static char *shacrypt(const char *passwd, const char *magic, const char *salt) | |
502 | { | |
503 | /* Prefix for optional rounds specification. */ | |
504 | static const char rounds_prefix[] = "rounds="; | |
505 | /* Maximum salt string length. */ | |
17621bc2 | 506 | # define SALT_LEN_MAX 16 |
4e57a12b | 507 | /* Default number of rounds if not explicitly specified. */ |
17621bc2 | 508 | # define ROUNDS_DEFAULT 5000 |
4e57a12b | 509 | /* Minimum number of rounds. */ |
17621bc2 | 510 | # define ROUNDS_MIN 1000 |
4e57a12b | 511 | /* Maximum number of rounds. */ |
17621bc2 | 512 | # define ROUNDS_MAX 999999999 |
4e57a12b RL |
513 | |
514 | /* "$6$rounds=<N>$......salt......$...shahash(up to 86 chars)...\0" */ | |
515 | static char out_buf[3 + 17 + 17 + 86 + 1]; | |
516 | unsigned char buf[SHA512_DIGEST_LENGTH]; | |
517 | unsigned char temp_buf[SHA512_DIGEST_LENGTH]; | |
518 | size_t buf_size = 0; | |
0f3ffbd1 RL |
519 | char ascii_magic[2]; |
520 | char ascii_salt[17]; /* Max 16 chars plus '\0' */ | |
521 | char *ascii_passwd = NULL; | |
4e57a12b RL |
522 | size_t n; |
523 | EVP_MD_CTX *md = NULL, *md2 = NULL; | |
524 | const EVP_MD *sha = NULL; | |
525 | size_t passwd_len, salt_len, magic_len; | |
a4c74e88 | 526 | unsigned int rounds = 5000; /* Default */ |
4e57a12b RL |
527 | char rounds_custom = 0; |
528 | char *p_bytes = NULL; | |
529 | char *s_bytes = NULL; | |
530 | char *cp = NULL; | |
531 | ||
532 | passwd_len = strlen(passwd); | |
533 | magic_len = strlen(magic); | |
534 | ||
535 | /* assert it's "5" or "6" */ | |
536 | if (magic_len != 1) | |
537 | return NULL; | |
538 | ||
539 | switch (magic[0]) { | |
540 | case '5': | |
541 | sha = EVP_sha256(); | |
542 | buf_size = 32; | |
543 | break; | |
544 | case '6': | |
545 | sha = EVP_sha512(); | |
546 | buf_size = 64; | |
547 | break; | |
548 | default: | |
549 | return NULL; | |
550 | } | |
551 | ||
552 | if (strncmp(salt, rounds_prefix, sizeof(rounds_prefix) - 1) == 0) { | |
553 | const char *num = salt + sizeof(rounds_prefix) - 1; | |
554 | char *endp; | |
555 | unsigned long int srounds = strtoul (num, &endp, 10); | |
556 | if (*endp == '$') { | |
557 | salt = endp + 1; | |
558 | if (srounds > ROUNDS_MAX) | |
559 | rounds = ROUNDS_MAX; | |
560 | else if (srounds < ROUNDS_MIN) | |
561 | rounds = ROUNDS_MIN; | |
562 | else | |
a4c74e88 | 563 | rounds = (unsigned int)srounds; |
4e57a12b RL |
564 | rounds_custom = 1; |
565 | } else { | |
566 | return NULL; | |
567 | } | |
568 | } | |
569 | ||
cbe29648 | 570 | OPENSSL_strlcpy(ascii_magic, magic, sizeof(ascii_magic)); |
0f3ffbd1 RL |
571 | #ifdef CHARSET_EBCDIC |
572 | if ((magic[0] & 0x80) != 0) /* High bit is 1 in EBCDIC alnums */ | |
573 | ebcdic2ascii(ascii_magic, ascii_magic, magic_len); | |
574 | #endif | |
575 | ||
4e57a12b | 576 | /* The salt gets truncated to 16 chars */ |
cbe29648 | 577 | OPENSSL_strlcpy(ascii_salt, salt, sizeof(ascii_salt)); |
0f3ffbd1 RL |
578 | salt_len = strlen(ascii_salt); |
579 | #ifdef CHARSET_EBCDIC | |
580 | ebcdic2ascii(ascii_salt, ascii_salt, salt_len); | |
581 | #endif | |
582 | ||
583 | #ifdef CHARSET_EBCDIC | |
584 | ascii_passwd = OPENSSL_strdup(passwd); | |
585 | if (ascii_passwd == NULL) | |
586 | return NULL; | |
587 | ebcdic2ascii(ascii_passwd, ascii_passwd, passwd_len); | |
588 | passwd = ascii_passwd; | |
589 | #endif | |
4e57a12b RL |
590 | |
591 | out_buf[0] = 0; | |
cbe29648 RS |
592 | OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); |
593 | OPENSSL_strlcat(out_buf, ascii_magic, sizeof(out_buf)); | |
594 | OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); | |
4e57a12b | 595 | if (rounds_custom) { |
dbaa069a | 596 | char tmp_buf[80]; /* "rounds=999999999" */ |
a4c74e88 | 597 | sprintf(tmp_buf, "rounds=%u", rounds); |
0f3ffbd1 RL |
598 | #ifdef CHARSET_EBCDIC |
599 | /* In case we're really on a ASCII based platform and just pretend */ | |
600 | if (tmp_buf[0] != 0x72) /* ASCII 'r' */ | |
601 | ebcdic2ascii(tmp_buf, tmp_buf, strlen(tmp_buf)); | |
602 | #endif | |
cbe29648 RS |
603 | OPENSSL_strlcat(out_buf, tmp_buf, sizeof(out_buf)); |
604 | OPENSSL_strlcat(out_buf, ascii_dollar, sizeof(out_buf)); | |
4e57a12b | 605 | } |
cbe29648 | 606 | OPENSSL_strlcat(out_buf, ascii_salt, sizeof(out_buf)); |
4e57a12b RL |
607 | |
608 | /* assert "$5$rounds=999999999$......salt......" */ | |
609 | if (strlen(out_buf) > 3 + 17 * rounds_custom + salt_len ) | |
0f3ffbd1 | 610 | goto err; |
4e57a12b RL |
611 | |
612 | md = EVP_MD_CTX_new(); | |
613 | if (md == NULL | |
614 | || !EVP_DigestInit_ex(md, sha, NULL) | |
615 | || !EVP_DigestUpdate(md, passwd, passwd_len) | |
0f3ffbd1 | 616 | || !EVP_DigestUpdate(md, ascii_salt, salt_len)) |
4e57a12b RL |
617 | goto err; |
618 | ||
619 | md2 = EVP_MD_CTX_new(); | |
620 | if (md2 == NULL | |
621 | || !EVP_DigestInit_ex(md2, sha, NULL) | |
622 | || !EVP_DigestUpdate(md2, passwd, passwd_len) | |
0f3ffbd1 | 623 | || !EVP_DigestUpdate(md2, ascii_salt, salt_len) |
4e57a12b RL |
624 | || !EVP_DigestUpdate(md2, passwd, passwd_len) |
625 | || !EVP_DigestFinal_ex(md2, buf, NULL)) | |
626 | goto err; | |
627 | ||
628 | for (n = passwd_len; n > buf_size; n -= buf_size) { | |
629 | if (!EVP_DigestUpdate(md, buf, buf_size)) | |
630 | goto err; | |
631 | } | |
632 | if (!EVP_DigestUpdate(md, buf, n)) | |
633 | goto err; | |
634 | ||
635 | n = passwd_len; | |
636 | while (n) { | |
637 | if (!EVP_DigestUpdate(md, | |
638 | (n & 1) ? buf : (unsigned const char *)passwd, | |
639 | (n & 1) ? buf_size : passwd_len)) | |
640 | goto err; | |
641 | n >>= 1; | |
642 | } | |
643 | if (!EVP_DigestFinal_ex(md, buf, NULL)) | |
644 | return NULL; | |
645 | ||
646 | /* P sequence */ | |
647 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
648 | goto err; | |
649 | ||
650 | for (n = passwd_len; n > 0; n--) | |
651 | if (!EVP_DigestUpdate(md2, passwd, passwd_len)) | |
652 | goto err; | |
653 | ||
654 | if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) | |
655 | return NULL; | |
656 | ||
657 | if ((p_bytes = OPENSSL_zalloc(passwd_len)) == NULL) | |
658 | goto err; | |
659 | for (cp = p_bytes, n = passwd_len; n > buf_size; n -= buf_size, cp += buf_size) | |
660 | memcpy(cp, temp_buf, buf_size); | |
661 | memcpy(cp, temp_buf, n); | |
662 | ||
663 | /* S sequence */ | |
664 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
665 | goto err; | |
666 | ||
667 | for (n = 16 + buf[0]; n > 0; n--) | |
0f3ffbd1 | 668 | if (!EVP_DigestUpdate(md2, ascii_salt, salt_len)) |
4e57a12b RL |
669 | goto err; |
670 | ||
671 | if (!EVP_DigestFinal_ex(md2, temp_buf, NULL)) | |
672 | return NULL; | |
673 | ||
674 | if ((s_bytes = OPENSSL_zalloc(salt_len)) == NULL) | |
675 | goto err; | |
676 | for (cp = s_bytes, n = salt_len; n > buf_size; n -= buf_size, cp += buf_size) | |
677 | memcpy(cp, temp_buf, buf_size); | |
678 | memcpy(cp, temp_buf, n); | |
679 | ||
680 | for (n = 0; n < rounds; n++) { | |
681 | if (!EVP_DigestInit_ex(md2, sha, NULL)) | |
682 | goto err; | |
683 | if (!EVP_DigestUpdate(md2, | |
684 | (n & 1) ? (unsigned const char *)p_bytes : buf, | |
685 | (n & 1) ? passwd_len : buf_size)) | |
686 | goto err; | |
687 | if (n % 3) { | |
688 | if (!EVP_DigestUpdate(md2, s_bytes, salt_len)) | |
689 | goto err; | |
690 | } | |
691 | if (n % 7) { | |
692 | if (!EVP_DigestUpdate(md2, p_bytes, passwd_len)) | |
693 | goto err; | |
694 | } | |
695 | if (!EVP_DigestUpdate(md2, | |
696 | (n & 1) ? buf : (unsigned const char *)p_bytes, | |
697 | (n & 1) ? buf_size : passwd_len)) | |
698 | goto err; | |
699 | if (!EVP_DigestFinal_ex(md2, buf, NULL)) | |
700 | goto err; | |
701 | } | |
702 | EVP_MD_CTX_free(md2); | |
703 | EVP_MD_CTX_free(md); | |
704 | md2 = NULL; | |
705 | md = NULL; | |
706 | OPENSSL_free(p_bytes); | |
707 | OPENSSL_free(s_bytes); | |
708 | p_bytes = NULL; | |
709 | s_bytes = NULL; | |
710 | ||
711 | cp = out_buf + strlen(out_buf); | |
0f3ffbd1 | 712 | *cp++ = ascii_dollar[0]; |
4e57a12b | 713 | |
17621bc2 | 714 | # define b64_from_24bit(B2, B1, B0, N) \ |
4e57a12b RL |
715 | do { \ |
716 | unsigned int w = ((B2) << 16) | ((B1) << 8) | (B0); \ | |
717 | int i = (N); \ | |
718 | while (i-- > 0) \ | |
719 | { \ | |
720 | *cp++ = cov_2char[w & 0x3f]; \ | |
721 | w >>= 6; \ | |
722 | } \ | |
723 | } while (0) | |
724 | ||
0f3ffbd1 | 725 | switch (magic[0]) { |
4e57a12b RL |
726 | case '5': |
727 | b64_from_24bit (buf[0], buf[10], buf[20], 4); | |
728 | b64_from_24bit (buf[21], buf[1], buf[11], 4); | |
729 | b64_from_24bit (buf[12], buf[22], buf[2], 4); | |
730 | b64_from_24bit (buf[3], buf[13], buf[23], 4); | |
731 | b64_from_24bit (buf[24], buf[4], buf[14], 4); | |
732 | b64_from_24bit (buf[15], buf[25], buf[5], 4); | |
733 | b64_from_24bit (buf[6], buf[16], buf[26], 4); | |
734 | b64_from_24bit (buf[27], buf[7], buf[17], 4); | |
735 | b64_from_24bit (buf[18], buf[28], buf[8], 4); | |
736 | b64_from_24bit (buf[9], buf[19], buf[29], 4); | |
737 | b64_from_24bit (0, buf[31], buf[30], 3); | |
738 | break; | |
739 | case '6': | |
740 | b64_from_24bit (buf[0], buf[21], buf[42], 4); | |
741 | b64_from_24bit (buf[22], buf[43], buf[1], 4); | |
742 | b64_from_24bit (buf[44], buf[2], buf[23], 4); | |
743 | b64_from_24bit (buf[3], buf[24], buf[45], 4); | |
744 | b64_from_24bit (buf[25], buf[46], buf[4], 4); | |
745 | b64_from_24bit (buf[47], buf[5], buf[26], 4); | |
746 | b64_from_24bit (buf[6], buf[27], buf[48], 4); | |
747 | b64_from_24bit (buf[28], buf[49], buf[7], 4); | |
748 | b64_from_24bit (buf[50], buf[8], buf[29], 4); | |
749 | b64_from_24bit (buf[9], buf[30], buf[51], 4); | |
750 | b64_from_24bit (buf[31], buf[52], buf[10], 4); | |
751 | b64_from_24bit (buf[53], buf[11], buf[32], 4); | |
752 | b64_from_24bit (buf[12], buf[33], buf[54], 4); | |
753 | b64_from_24bit (buf[34], buf[55], buf[13], 4); | |
754 | b64_from_24bit (buf[56], buf[14], buf[35], 4); | |
755 | b64_from_24bit (buf[15], buf[36], buf[57], 4); | |
756 | b64_from_24bit (buf[37], buf[58], buf[16], 4); | |
757 | b64_from_24bit (buf[59], buf[17], buf[38], 4); | |
758 | b64_from_24bit (buf[18], buf[39], buf[60], 4); | |
759 | b64_from_24bit (buf[40], buf[61], buf[19], 4); | |
760 | b64_from_24bit (buf[62], buf[20], buf[41], 4); | |
761 | b64_from_24bit (0, 0, buf[63], 2); | |
762 | break; | |
763 | default: | |
764 | goto err; | |
765 | } | |
766 | *cp = '\0'; | |
0f3ffbd1 RL |
767 | #ifdef CHARSET_EBCDIC |
768 | ascii2ebcdic(out_buf, out_buf, strlen(out_buf)); | |
769 | #endif | |
4e57a12b RL |
770 | |
771 | return out_buf; | |
772 | ||
773 | err: | |
774 | EVP_MD_CTX_free(md2); | |
775 | EVP_MD_CTX_free(md); | |
776 | OPENSSL_free(p_bytes); | |
777 | OPENSSL_free(s_bytes); | |
0f3ffbd1 | 778 | OPENSSL_free(ascii_passwd); |
4e57a12b RL |
779 | return NULL; |
780 | } | |
4e57a12b | 781 | |
e6e7b5f3 | 782 | static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p, |
0f113f3e | 783 | char *passwd, BIO *out, int quiet, int table, |
30745146 | 784 | int reverse, size_t pw_maxlen, passwd_modes mode) |
0f113f3e MC |
785 | { |
786 | char *hash = NULL; | |
787 | ||
788 | assert(salt_p != NULL); | |
789 | assert(salt_malloc_p != NULL); | |
790 | ||
791 | /* first make sure we have a salt */ | |
792 | if (!passed_salt) { | |
0f3ffbd1 RL |
793 | size_t saltlen = 0; |
794 | size_t i; | |
795 | ||
17621bc2 | 796 | #ifndef OPENSSL_NO_DES |
0f3ffbd1 RL |
797 | if (mode == passwd_crypt) |
798 | saltlen = 2; | |
17621bc2 | 799 | #endif /* !OPENSSL_NO_DES */ |
0f113f3e | 800 | |
0f3ffbd1 RL |
801 | if (mode == passwd_md5 || mode == passwd_apr1 || mode == passwd_aixmd5) |
802 | saltlen = 8; | |
0f113f3e | 803 | |
0f3ffbd1 RL |
804 | if (mode == passwd_sha256 || mode == passwd_sha512) |
805 | saltlen = 16; | |
0f113f3e | 806 | |
0f3ffbd1 | 807 | assert(saltlen != 0); |
4e57a12b | 808 | |
0f3ffbd1 RL |
809 | if (*salt_malloc_p == NULL) |
810 | *salt_p = *salt_malloc_p = app_malloc(saltlen + 1, "salt buffer"); | |
811 | if (RAND_bytes((unsigned char *)*salt_p, saltlen) <= 0) | |
812 | goto end; | |
4e57a12b | 813 | |
0f3ffbd1 RL |
814 | for (i = 0; i < saltlen; i++) |
815 | (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ | |
816 | (*salt_p)[i] = 0; | |
817 | # ifdef CHARSET_EBCDIC | |
818 | /* The password encryption funtion will convert back to ASCII */ | |
819 | ascii2ebcdic(*salt_p, *salt_p, saltlen); | |
820 | # endif | |
0f113f3e MC |
821 | } |
822 | ||
823 | assert(*salt_p != NULL); | |
824 | ||
825 | /* truncate password if necessary */ | |
826 | if ((strlen(passwd) > pw_maxlen)) { | |
827 | if (!quiet) | |
828 | /* | |
829 | * XXX: really we should know how to print a size_t, not cast it | |
830 | */ | |
831 | BIO_printf(bio_err, | |
832 | "Warning: truncating password to %u characters\n", | |
833 | (unsigned)pw_maxlen); | |
834 | passwd[pw_maxlen] = 0; | |
835 | } | |
836 | assert(strlen(passwd) <= pw_maxlen); | |
837 | ||
838 | /* now compute password hash */ | |
17621bc2 | 839 | #ifndef OPENSSL_NO_DES |
30745146 | 840 | if (mode == passwd_crypt) |
0f113f3e | 841 | hash = DES_crypt(passwd, *salt_p); |
17621bc2 | 842 | #endif |
30745146 RL |
843 | if (mode == passwd_md5 || mode == passwd_apr1) |
844 | hash = md5crypt(passwd, (mode == passwd_md5 ? "1" : "apr1"), *salt_p); | |
037f2c3f GN |
845 | if (mode == passwd_aixmd5) |
846 | hash = md5crypt(passwd, "", *salt_p); | |
30745146 RL |
847 | if (mode == passwd_sha256 || mode == passwd_sha512) |
848 | hash = shacrypt(passwd, (mode == passwd_sha256 ? "5" : "6"), *salt_p); | |
0f113f3e MC |
849 | assert(hash != NULL); |
850 | ||
851 | if (table && !reverse) | |
852 | BIO_printf(out, "%s\t%s\n", passwd, hash); | |
853 | else if (table && reverse) | |
854 | BIO_printf(out, "%s\t%s\n", hash, passwd); | |
855 | else | |
856 | BIO_printf(out, "%s\n", hash); | |
2a600d7a | 857 | return 1; |
7e1b7485 RS |
858 | |
859 | end: | |
2a600d7a | 860 | return 0; |
0f113f3e | 861 | } |