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/)"
21 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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
38 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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,
44 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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)
61 # include <openssl/bio.h>
62 # include <openssl/err.h>
63 # include <openssl/evp.h>
64 # include <openssl/rand.h>
65 # ifndef OPENSSL_NO_DES
66 # include <openssl/des.h>
68 # ifndef NO_MD5CRYPT_1
69 # include <openssl/md5.h>
72 static unsigned const char cov_2char[64] = {
73 /* from crypto/des/fcrypt.c */
74 0x2E, 0x2F, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35,
75 0x36, 0x37, 0x38, 0x39, 0x41, 0x42, 0x43, 0x44,
76 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x4B, 0x4C,
77 0x4D, 0x4E, 0x4F, 0x50, 0x51, 0x52, 0x53, 0x54,
78 0x55, 0x56, 0x57, 0x58, 0x59, 0x5A, 0x61, 0x62,
79 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A,
80 0x6B, 0x6C, 0x6D, 0x6E, 0x6F, 0x70, 0x71, 0x72,
81 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A
84 static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
85 char *passwd, BIO *out, int quiet, int table,
86 int reverse, size_t pw_maxlen, int usecrypt, int use1,
89 typedef enum OPTION_choice {
90 OPT_ERR = -1, OPT_EOF = 0, OPT_HELP,
92 OPT_NOVERIFY, OPT_QUIET, OPT_TABLE, OPT_REVERSE, OPT_APR1,
93 OPT_1, OPT_CRYPT, OPT_SALT, OPT_STDIN
96 OPTIONS passwd_options[] = {
97 {"help", OPT_HELP, '-', "Display this summary"},
98 {"in", OPT_IN, '<', "Pead passwords from file"},
99 {"noverify", OPT_NOVERIFY, '-',
100 "Never verify when reading password from terminal"},
101 {"quiet", OPT_QUIET, '-', "No warnings"},
102 {"table", OPT_TABLE, '-', "Format output as table"},
103 {"reverse", OPT_REVERSE, '-', "Switch table columns"},
104 {"salt", OPT_SALT, 's', "Use provided salt"},
105 {"stdin", OPT_STDIN, '-', "Read passwords from stdin"},
106 # ifndef NO_MD5CRYPT_1
107 {"apr1", OPT_APR1, '-', "MD5-based password algorithm, Apache variant"},
108 {"1", OPT_1, '-', "MD5-based password algorithm"},
110 # ifndef OPENSSL_NO_DES
111 {"crypt", OPT_CRYPT, '-', "Standard Unix password algorithm (default)"},
116 int passwd_main(int argc, char **argv)
119 char *infile = NULL, *salt = NULL, *passwd = NULL, **passwds = NULL;
120 char *salt_malloc = NULL, *passwd_malloc = NULL, *prog;
122 int in_stdin = 0, in_noverify = 0, pw_source_defined = 0;
123 int passed_salt = 0, quiet = 0, table = 0, reverse = 0;
124 int ret = 1, usecrypt = 0, use1 = 0, useapr1 = 0;
125 size_t passwd_malloc_size = 0, pw_maxlen = 256;
127 prog = opt_init(argc, argv, passwd_options);
128 while ((o = opt_next()) != OPT_EOF) {
133 BIO_printf(bio_err, "%s: Use -help for summary.\n", prog);
136 opt_help(passwd_options);
140 if (pw_source_defined)
143 pw_source_defined = 1;
171 if (pw_source_defined)
177 argc = opt_num_rest();
181 if (pw_source_defined)
183 pw_source_defined = 1;
187 if (!usecrypt && !use1 && !useapr1) {
191 if (usecrypt + use1 + useapr1 > 1) {
196 # ifdef OPENSSL_NO_DES
200 # ifdef NO_MD5CRYPT_1
205 if (!app_load_modules(NULL))
208 if (infile && in_stdin) {
209 BIO_printf(bio_err, "%s: Can't combine -in and -stdin\n", prog);
213 in = bio_open_default(infile, "r");
219 else if (use1 || useapr1)
220 pw_maxlen = 256; /* arbitrary limit, should be enough for most
223 if (passwds == NULL) {
224 /* no passwords on the command line */
226 passwd_malloc_size = pw_maxlen + 2;
227 /* longer than necessary so that we can warn about truncation */
228 passwd = passwd_malloc =
229 app_malloc(passwd_malloc_size, "password buffer");
232 if ((in == NULL) && (passwds == NULL)) {
233 /* build a null-terminated list */
234 static char *passwds_static[2] = { NULL, NULL };
236 passwds = passwds_static;
238 if (EVP_read_pw_string
239 (passwd_malloc, passwd_malloc_size, "Password: ",
240 !(passed_salt || in_noverify)) != 0)
242 passwds[0] = passwd_malloc;
246 assert(passwds != NULL);
247 assert(*passwds != NULL);
249 do { /* loop over list of passwords */
251 if (!do_passwd(passed_salt, &salt, &salt_malloc, passwd, bio_out,
252 quiet, table, reverse, pw_maxlen, usecrypt, use1,
256 while (*passwds != NULL);
262 assert(passwd != NULL);
264 int r = BIO_gets(in, passwd, pw_maxlen + 1);
266 char *c = (strchr(passwd, '\n'));
268 *c = 0; /* truncate at newline */
270 /* ignore rest of line */
273 r = BIO_gets(in, trash, sizeof trash);
274 while ((r > 0) && (!strchr(trash, '\n')));
278 (passed_salt, &salt, &salt_malloc, passwd, bio_out, quiet,
279 table, reverse, pw_maxlen, usecrypt, use1, useapr1))
289 ERR_print_errors(bio_err);
290 OPENSSL_free(salt_malloc);
291 OPENSSL_free(passwd_malloc);
296 # ifndef NO_MD5CRYPT_1
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.)
306 static char *md5crypt(const char *passwd, const char *magic, const char *salt)
308 /* "$apr1$..salt..$.......md5hash..........\0" */
309 static char out_buf[6 + 9 + 24 + 2];
310 unsigned char buf[MD5_DIGEST_LENGTH];
315 size_t passwd_len, salt_len;
317 passwd_len = strlen(passwd);
320 assert(strlen(magic) <= 4); /* "1" or "apr1" */
321 strncat(out_buf, magic, 4);
322 strncat(out_buf, "$", 1);
323 strncat(out_buf, salt, 8);
324 assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */
325 salt_out = out_buf + 2 + strlen(magic);
326 salt_len = strlen(salt_out);
327 assert(salt_len <= 8);
329 EVP_MD_CTX_init(&md);
330 EVP_DigestInit_ex(&md, EVP_md5(), NULL);
331 EVP_DigestUpdate(&md, passwd, passwd_len);
332 EVP_DigestUpdate(&md, "$", 1);
333 EVP_DigestUpdate(&md, magic, strlen(magic));
334 EVP_DigestUpdate(&md, "$", 1);
335 EVP_DigestUpdate(&md, salt_out, salt_len);
337 EVP_MD_CTX_init(&md2);
338 EVP_DigestInit_ex(&md2, EVP_md5(), NULL);
339 EVP_DigestUpdate(&md2, passwd, passwd_len);
340 EVP_DigestUpdate(&md2, salt_out, salt_len);
341 EVP_DigestUpdate(&md2, passwd, passwd_len);
342 EVP_DigestFinal_ex(&md2, buf, NULL);
344 for (i = passwd_len; i > sizeof buf; i -= sizeof buf)
345 EVP_DigestUpdate(&md, buf, sizeof buf);
346 EVP_DigestUpdate(&md, buf, i);
350 EVP_DigestUpdate(&md, (n & 1) ? "\0" : passwd, 1);
353 EVP_DigestFinal_ex(&md, buf, NULL);
355 for (i = 0; i < 1000; i++) {
356 EVP_DigestInit_ex(&md2, EVP_md5(), NULL);
357 EVP_DigestUpdate(&md2, (i & 1) ? (unsigned const char *)passwd : buf,
358 (i & 1) ? passwd_len : sizeof buf);
360 EVP_DigestUpdate(&md2, salt_out, salt_len);
362 EVP_DigestUpdate(&md2, passwd, passwd_len);
363 EVP_DigestUpdate(&md2, (i & 1) ? buf : (unsigned const char *)passwd,
364 (i & 1) ? sizeof buf : passwd_len);
365 EVP_DigestFinal_ex(&md2, buf, NULL);
367 EVP_MD_CTX_cleanup(&md2);
370 /* transform buf into output string */
372 unsigned char buf_perm[sizeof buf];
376 /* silly output permutation */
377 for (dest = 0, source = 0; dest < 14;
378 dest++, source = (source + 6) % 17)
379 buf_perm[dest] = buf[source];
380 buf_perm[14] = buf[5];
381 buf_perm[15] = buf[11];
382 # ifndef PEDANTIC /* Unfortunately, this generates a "no
384 assert(16 == sizeof buf_perm);
387 output = salt_out + salt_len;
388 assert(output == out_buf + strlen(out_buf));
392 for (i = 0; i < 15; i += 3) {
393 *output++ = cov_2char[buf_perm[i + 2] & 0x3f];
394 *output++ = cov_2char[((buf_perm[i + 1] & 0xf) << 2) |
395 (buf_perm[i + 2] >> 6)];
396 *output++ = cov_2char[((buf_perm[i] & 3) << 4) |
397 (buf_perm[i + 1] >> 4)];
398 *output++ = cov_2char[buf_perm[i] >> 2];
401 *output++ = cov_2char[buf_perm[i] & 0x3f];
402 *output++ = cov_2char[buf_perm[i] >> 6];
404 assert(strlen(out_buf) < sizeof(out_buf));
406 EVP_MD_CTX_cleanup(&md);
412 static int do_passwd(int passed_salt, char **salt_p, char **salt_malloc_p,
413 char *passwd, BIO *out, int quiet, int table,
414 int reverse, size_t pw_maxlen, int usecrypt, int use1,
419 assert(salt_p != NULL);
420 assert(salt_malloc_p != NULL);
422 /* first make sure we have a salt */
424 # ifndef OPENSSL_NO_DES
426 if (*salt_malloc_p == NULL) {
427 *salt_p = *salt_malloc_p = app_malloc(3, "salt buffer");
429 if (RAND_bytes((unsigned char *)*salt_p, 2) <= 0)
431 (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */
432 (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */
434 # ifdef CHARSET_EBCDIC
435 ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert back
439 # endif /* !OPENSSL_NO_DES */
441 # ifndef NO_MD5CRYPT_1
442 if (use1 || useapr1) {
445 if (*salt_malloc_p == NULL) {
446 *salt_p = *salt_malloc_p = app_malloc(9, "salt buffer");
448 if (RAND_bytes((unsigned char *)*salt_p, 8) <= 0)
451 for (i = 0; i < 8; i++)
452 (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */
455 # endif /* !NO_MD5CRYPT_1 */
458 assert(*salt_p != NULL);
460 /* truncate password if necessary */
461 if ((strlen(passwd) > pw_maxlen)) {
464 * XXX: really we should know how to print a size_t, not cast it
467 "Warning: truncating password to %u characters\n",
468 (unsigned)pw_maxlen);
469 passwd[pw_maxlen] = 0;
471 assert(strlen(passwd) <= pw_maxlen);
473 /* now compute password hash */
474 # ifndef OPENSSL_NO_DES
476 hash = DES_crypt(passwd, *salt_p);
478 # ifndef NO_MD5CRYPT_1
480 hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p);
482 assert(hash != NULL);
484 if (table && !reverse)
485 BIO_printf(out, "%s\t%s\n", passwd, hash);
486 else if (table && reverse)
487 BIO_printf(out, "%s\t%s\n", hash, passwd);
489 BIO_printf(out, "%s\n", hash);
497 int passwd_main(int argc, char **argv)
499 BIO_printf(bio_err, "Program not available.\n");