1 /* ====================================================================
2 * Copyright (c) 2000-2015 The OpenSSL Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in
13 * the documentation and/or other materials provided with the
16 * 3. All advertising materials mentioning features or use of this
17 * software must display the following acknowledgment:
18 * "This product includes software developed by the OpenSSL Project
19 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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22 * endorse or promote products derived from this software without
23 * prior written permission. For written permission, please contact
24 * licensing@OpenSSL.org.
26 * 5. Products derived from this software may not be called "OpenSSL"
27 * nor may "OpenSSL" appear in their names without prior written
28 * permission of the OpenSSL Project.
30 * 6. Redistributions of any form whatsoever must retain the following
32 * "This product includes software developed by the OpenSSL Project
33 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
36 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
37 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
41 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
42 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
43 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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45 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
46 * OF THE POSSIBILITY OF SUCH DAMAGE.
47 * ====================================================================
50 #if defined OPENSSL_NO_MD5 || defined CHARSET_EBCDIC
51 # define NO_MD5CRYPT_1
54 #if !defined(OPENSSL_NO_DES) || !defined(NO_MD5CRYPT_1)
60 # include <openssl/bio.h>
61 # include <openssl/err.h>
62 # include <openssl/evp.h>
63 # include <openssl/rand.h>
64 # ifndef OPENSSL_NO_DES
65 # include <openssl/des.h>
67 # ifndef NO_MD5CRYPT_1
68 # include <openssl/md5.h>
71 static unsigned const char cov_2char[64] = {
72 /* from crypto/des/fcrypt.c */
73 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
74 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
75 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C,
76 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
77 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62,
78 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
79 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72,
80 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A
83 static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
84 char *passwd, BIO *out, int quiet, int table,
85 int reverse, size_t pw_maxlen, int usecrypt, int use1,
88 typedef enum OPTION_choice {
89 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
91 OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1,
92 OPT_1, OPT_CRYPT, OPT_SALT, OPT_STDIN
95 OPTIONS passwd_options[] = {
96 {"help", OPT_HELP, '-', "Display this summary"},
97 {"in", OPT_IN, '<', "Pead passwords from file"},
98 {"noverify", OPT_NOVERIFY, '-',
99 "Never verify when reading password from terminal"},
100 {"quiet", OPT_QUIET, '-', "No warnings"},
101 {"table", OPT_TABLE, '-', "Format output as table"},
102 {"reverse", OPT_REVERSE, '-', "Switch table columns"},
103 {"salt", OPT_SALT, 's', "Use provided salt"},
104 {"stdin", OPT_STDIN, '-', "Read passwords from stdin"},
105 # ifndef NO_MD5CRYPT_1
106 {"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"},
107 {"1", OPT_1, '-', "MD5-based password algorithm"},
109 # ifndef OPENSSL_NO_DES
110 {"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"},
115 int passwd_main(int argc, char **argv)
118 char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL;
119 char *salt_malloc = NULL, *passwd_malloc = NULL, *prog;
121 int in_stdin = 0, pw_source_defined = 0;
122 #ifndef OPENSSL_NO_UI
125 int passed_salt = 0, quiet = 0, table = 0, reverse = 0;
126 int ret = 1, usecrypt = 0, use1 = 0, useapr1 = 0;
127 size_t passwd_malloc_size = 0, pw_maxlen = 256;
129 prog = opt_init(argc, argv, passwd_options);
130 while ((o = opt_next()) != OPT_EOF) {
135 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
138 opt_help(passwd_options);
142 if (pw_source_defined)
145 pw_source_defined = 1;
148 #ifndef OPENSSL_NO_UI
175 if (pw_source_defined)
178 pw_source_defined = 1;
182 argc = opt_num_rest();
186 if (pw_source_defined)
188 pw_source_defined = 1;
192 if (!usecrypt && !use1 && !useapr1) {
196 if (usecrypt + use1 + useapr1 > 1) {
201 # ifdef OPENSSL_NO_DES
205 # ifdef NO_MD5CRYPT_1
210 if (infile != NULL && in_stdin) {
211 BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog);
215 if (infile != NULL || in_stdin) {
217 * If in_stdin is true, we know that infile is NULL, and that
218 * bio_open_default() will give us back an alias for stdin.
220 in = bio_open_default(infile, 'r', FORMAT_TEXT);
227 else if (use1 || useapr1)
228 pw_maxlen = 256; /* arbitrary limit, should be enough for most
231 if (passwds == NULL) {
232 /* no passwords on the command line */
234 passwd_malloc_size = pw_maxlen + 2;
235 /* longer than necessary so that we can warn about truncation */
236 passwd = passwd_malloc =
237 app_malloc(passwd_malloc_size, "password buffer");
240 if ((in == NULL) && (passwds == NULL)) {
242 #ifndef OPENSSL_NO_UI
243 /* build a null-terminated list */
244 static char *passwds_static[2] = { NULL, NULL };
246 passwds = passwds_static;
248 if (EVP_read_pw_string
249 (passwd_malloc, passwd_malloc_size, "Password: ",
250 !(passed_salt || in_noverify)) != 0)
252 passwds[0] = passwd_malloc;
255 BIO_printf(bio_err, "password required\n");
262 assert(passwds != NULL);
263 assert(*passwds != NULL);
265 do { /* loop over list of passwords */
267 if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out,
268 quiet, table, reverse, pw_maxlen, usecrypt, use1,
272 while (*passwds != NULL);
278 assert(passwd != NULL);
280 int r = BIO_gets(in, passwd, pw_maxlen + 1);
282 char *c = (strchr(passwd, '\n'));
284 *c = 0; /* truncate at newline */
286 /* ignore rest of line */
289 r = BIO_gets(in, trash, sizeof trash);
290 while ((r > 0) && (!strchr(trash, '\n')));
294 (passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet,
295 table, reverse, pw_maxlen, usecrypt, use1, useapr1))
305 ERR_print_errors(bio_err);
306 OPENSSL_free(salt_malloc);
307 OPENSSL_free(passwd_malloc);
312 # ifndef NO_MD5CRYPT_1
314 * MD5-based password algorithm (should probably be available as a library
315 * function; then the static buffer would not be acceptable). For magic
316 * string "1", this should be compatible to the MD5-based BSD password
317 * algorithm. For 'magic' string "apr1", this is compatible to the MD5-based
318 * Apache password algorithm. (Apparently, the Apache password algorithm is
319 * identical except that the 'magic' string was changed -- the laziest
320 * application of the NIH principle I've ever encountered.)
322 static char *md5crypt(const char *passwd, const char *magic, const char *salt)
324 /* "$apr1$..salt..$.......md5hash..........\0" */
325 static char out_buf[6 + 9 + 24 + 2];
326 unsigned char buf[MD5_DIGEST_LENGTH];
330 EVP_MD_CTX *md, *md2;
331 size_t passwd_len, salt_len;
333 passwd_len = strlen(passwd);
336 assert(strlen(magic) <= 4); /* "1" or "apr1" */
337 OPENSSL_strlcat(out_buf, magic, sizeof out_buf);
338 OPENSSL_strlcat(out_buf, "$", sizeof out_buf);
339 OPENSSL_strlcat(out_buf, salt, sizeof out_buf);
340 assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */
341 salt_out = out_buf + 2 + strlen(magic);
342 salt_len = strlen(salt_out);
343 assert(salt_len <= 8);
345 md = EVP_MD_CTX_new();
348 EVP_DigestInit_ex(md, EVP_md5(), NULL);
349 EVP_DigestUpdate(md, passwd, passwd_len);
350 EVP_DigestUpdate(md, "$", 1);
351 EVP_DigestUpdate(md, magic, strlen(magic));
352 EVP_DigestUpdate(md, "$", 1);
353 EVP_DigestUpdate(md, salt_out, salt_len);
355 md2 = EVP_MD_CTX_new();
358 EVP_DigestInit_ex(md2, EVP_md5(), NULL);
359 EVP_DigestUpdate(md2, passwd, passwd_len);
360 EVP_DigestUpdate(md2, salt_out, salt_len);
361 EVP_DigestUpdate(md2, passwd, passwd_len);
362 EVP_DigestFinal_ex(md2, buf, NULL);
364 for (i = passwd_len; i > sizeof buf; i -= sizeof buf)
365 EVP_DigestUpdate(md, buf, sizeof buf);
366 EVP_DigestUpdate(md, buf, i);
370 EVP_DigestUpdate(md, (n & 1) ? "\0" : passwd, 1);
373 EVP_DigestFinal_ex(md, buf, NULL);
375 for (i = 0; i < 1000; i++) {
376 EVP_DigestInit_ex(md2, EVP_md5(), NULL);
377 EVP_DigestUpdate(md2, (i & 1) ? (unsigned const char *)passwd : buf,
378 (i & 1) ? passwd_len : sizeof buf);
380 EVP_DigestUpdate(md2, salt_out, salt_len);
382 EVP_DigestUpdate(md2, passwd, passwd_len);
383 EVP_DigestUpdate(md2, (i & 1) ? buf : (unsigned const char *)passwd,
384 (i & 1) ? sizeof buf : passwd_len);
385 EVP_DigestFinal_ex(md2, buf, NULL);
387 EVP_MD_CTX_free(md2);
391 /* transform buf into output string */
393 unsigned char buf_perm[sizeof buf];
397 /* silly output permutation */
398 for (dest = 0, source = 0; dest < 14;
399 dest++, source = (source + 6) % 17)
400 buf_perm[dest] = buf[source];
401 buf_perm[14] = buf[5];
402 buf_perm[15] = buf[11];
403 # ifndef PEDANTIC /* Unfortunately, this generates a "no
405 assert(16 == sizeof buf_perm);
408 output = salt_out + salt_len;
409 assert(output == out_buf + strlen(out_buf));
413 for (i = 0; i < 15; i += 3) {
414 *output++ = cov_2char[buf_perm[i + 2] & 0x3f];
415 *output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) |
416 (buf_perm[i + 2] >> 6)];
417 *output++ = cov_2char[((buf_perm[i] & 3) << 4) |
418 (buf_perm[i + 1] >> 4)];
419 *output++ = cov_2char[buf_perm[i] >> 2];
422 *output++ = cov_2char[buf_perm[i] & 0x3f];
423 *output++ = cov_2char[buf_perm[i] >> 6];
425 assert(strlen(out_buf) < sizeof(out_buf));
432 static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
433 char *passwd, BIO *out, int quiet, int table,
434 int reverse, size_t pw_maxlen, int usecrypt, int use1,
439 assert(salt_p != NULL);
440 assert(salt_malloc_p != NULL);
442 /* first make sure we have a salt */
444 # ifndef OPENSSL_NO_DES
446 if (*salt_malloc_p == NULL) {
447 *salt_p = *salt_malloc_p = app_malloc(3, "salt buffer");
449 if (RAND_bytes((unsigned char *)*salt_p, 2) <= 0)
451 (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */
452 (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */
454 # ifdef CHARSET_EBCDIC
455 ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert back
459 # endif /* !OPENSSL_NO_DES */
461 # ifndef NO_MD5CRYPT_1
462 if (use1 || useapr1) {
465 if (*salt_malloc_p == NULL) {
466 *salt_p = *salt_malloc_p = app_malloc(9, "salt buffer");
468 if (RAND_bytes((unsigned char *)*salt_p, 8) <= 0)
471 for (i = 0; i < 8; i++)
472 (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
475 # endif /* !NO_MD5CRYPT_1 */
478 assert(*salt_p != NULL);
480 /* truncate password if necessary */
481 if ((strlen(passwd) > pw_maxlen)) {
484 * XXX: really we should know how to print a size_t, not cast it
487 "Warning: truncating password to %u characters\n",
488 (unsigned)pw_maxlen);
489 passwd[pw_maxlen] = 0;
491 assert(strlen(passwd) <= pw_maxlen);
493 /* now compute password hash */
494 # ifndef OPENSSL_NO_DES
496 hash = DES_crypt(passwd, *salt_p);
498 # ifndef NO_MD5CRYPT_1
500 hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p);
502 assert(hash != NULL);
504 if (table && !reverse)
505 BIO_printf(out, "%s\t%s\n", passwd, hash);
506 else if (table && reverse)
507 BIO_printf(out, "%s\t%s\n", hash, passwd);
509 BIO_printf(out, "%s\n", hash);
517 int passwd_main(int argc, char **argv)
519 BIO_printf(bio_err, "Program not available.\n");