#include <assert.h>#include <string.h>#include "apps.h"#include <openssl/bio.h>#include <openssl/err.h>#include <openssl/evp.h>#include <openssl/rand.h>#include <openssl/des.h>#include <openssl/md5.h>Go to the source code of this file.
Defines | |
| #define | PROG passwd_main |
Functions | |
| static int | do_passwd (int passed_salt, char **salt_p, char **salt_malloc_p, char *passwd, BIO *out, int quiet, int table, int reverse, size_t pw_maxlen, int usecrypt, int use1, int useapr1) |
| int | MAIN (int, char **) |
| static char * | md5crypt (const char *passwd, const char *magic, const char *salt) |
Variables | |
| static unsigned const char | cov_2char [64] |
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Definition at line 417 of file passwd.c. References ascii2ebcdic, bio_err, BIO_printf(), cov_2char, DES_crypt(), md5crypt(), OPENSSL_malloc, and RAND_pseudo_bytes(). 00420 { 00421 char *hash = NULL; 00422 00423 assert(salt_p != NULL); 00424 assert(salt_malloc_p != NULL); 00425 00426 /* first make sure we have a salt */ 00427 if (!passed_salt) 00428 { 00429 #ifndef OPENSSL_NO_DES 00430 if (usecrypt) 00431 { 00432 if (*salt_malloc_p == NULL) 00433 { 00434 *salt_p = *salt_malloc_p = OPENSSL_malloc(3); 00435 if (*salt_malloc_p == NULL) 00436 goto err; 00437 } 00438 if (RAND_pseudo_bytes((unsigned char *)*salt_p, 2) < 0) 00439 goto err; 00440 (*salt_p)[0] = cov_2char[(*salt_p)[0] & 0x3f]; /* 6 bits */ 00441 (*salt_p)[1] = cov_2char[(*salt_p)[1] & 0x3f]; /* 6 bits */ 00442 (*salt_p)[2] = 0; 00443 #ifdef CHARSET_EBCDIC 00444 ascii2ebcdic(*salt_p, *salt_p, 2); /* des_crypt will convert 00445 * back to ASCII */ 00446 #endif 00447 } 00448 #endif /* !OPENSSL_NO_DES */ 00449 00450 #ifndef NO_MD5CRYPT_1 00451 if (use1 || useapr1) 00452 { 00453 int i; 00454 00455 if (*salt_malloc_p == NULL) 00456 { 00457 *salt_p = *salt_malloc_p = OPENSSL_malloc(9); 00458 if (*salt_malloc_p == NULL) 00459 goto err; 00460 } 00461 if (RAND_pseudo_bytes((unsigned char *)*salt_p, 8) < 0) 00462 goto err; 00463 00464 for (i = 0; i < 8; i++) 00465 (*salt_p)[i] = cov_2char[(*salt_p)[i] & 0x3f]; /* 6 bits */ 00466 (*salt_p)[8] = 0; 00467 } 00468 #endif /* !NO_MD5CRYPT_1 */ 00469 } 00470 00471 assert(*salt_p != NULL); 00472 00473 /* truncate password if necessary */ 00474 if ((strlen(passwd) > pw_maxlen)) 00475 { 00476 if (!quiet) 00477 /* XXX: really we should know how to print a size_t, not cast it */ 00478 BIO_printf(bio_err, "Warning: truncating password to %u characters\n", (unsigned)pw_maxlen); 00479 passwd[pw_maxlen] = 0; 00480 } 00481 assert(strlen(passwd) <= pw_maxlen); 00482 00483 /* now compute password hash */ 00484 #ifndef OPENSSL_NO_DES 00485 if (usecrypt) 00486 hash = DES_crypt(passwd, *salt_p); 00487 #endif 00488 #ifndef NO_MD5CRYPT_1 00489 if (use1 || useapr1) 00490 hash = md5crypt(passwd, (use1 ? "1" : "apr1"), *salt_p); 00491 #endif 00492 assert(hash != NULL); 00493 00494 if (table && !reverse) 00495 BIO_printf(out, "%s\t%s\n", passwd, hash); 00496 else if (table && reverse) 00497 BIO_printf(out, "%s\t%s\n", hash, passwd); 00498 else 00499 BIO_printf(out, "%s\n", hash); 00500 return 1; 00501 00502 err: 00503 return 0; 00504 }
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Definition at line 310 of file passwd.c. References cov_2char, EVP_DigestFinal_ex(), EVP_DigestInit_ex(), EVP_DigestUpdate(), EVP_md5(), EVP_MD_CTX_cleanup(), EVP_MD_CTX_init(), md, MD5_DIGEST_LENGTH, and output. Referenced by do_passwd(). 00311 { 00312 static char out_buf[6 + 9 + 24 + 2]; /* "$apr1$..salt..$.......md5hash..........\0" */ 00313 unsigned char buf[MD5_DIGEST_LENGTH]; 00314 char *salt_out; 00315 int n; 00316 unsigned int i; 00317 EVP_MD_CTX md,md2; 00318 size_t passwd_len, salt_len; 00319 00320 passwd_len = strlen(passwd); 00321 out_buf[0] = '$'; 00322 out_buf[1] = 0; 00323 assert(strlen(magic) <= 4); /* "1" or "apr1" */ 00324 strncat(out_buf, magic, 4); 00325 strncat(out_buf, "$", 1); 00326 strncat(out_buf, salt, 8); 00327 assert(strlen(out_buf) <= 6 + 8); /* "$apr1$..salt.." */ 00328 salt_out = out_buf + 2 + strlen(magic); 00329 salt_len = strlen(salt_out); 00330 assert(salt_len <= 8); 00331 00332 EVP_MD_CTX_init(&md); 00333 EVP_DigestInit_ex(&md,EVP_md5(), NULL); 00334 EVP_DigestUpdate(&md, passwd, passwd_len); 00335 EVP_DigestUpdate(&md, "$", 1); 00336 EVP_DigestUpdate(&md, magic, strlen(magic)); 00337 EVP_DigestUpdate(&md, "$", 1); 00338 EVP_DigestUpdate(&md, salt_out, salt_len); 00339 00340 EVP_MD_CTX_init(&md2); 00341 EVP_DigestInit_ex(&md2,EVP_md5(), NULL); 00342 EVP_DigestUpdate(&md2, passwd, passwd_len); 00343 EVP_DigestUpdate(&md2, salt_out, salt_len); 00344 EVP_DigestUpdate(&md2, passwd, passwd_len); 00345 EVP_DigestFinal_ex(&md2, buf, NULL); 00346 00347 for (i = passwd_len; i > sizeof buf; i -= sizeof buf) 00348 EVP_DigestUpdate(&md, buf, sizeof buf); 00349 EVP_DigestUpdate(&md, buf, i); 00350 00351 n = passwd_len; 00352 while (n) 00353 { 00354 EVP_DigestUpdate(&md, (n & 1) ? "\0" : passwd, 1); 00355 n >>= 1; 00356 } 00357 EVP_DigestFinal_ex(&md, buf, NULL); 00358 00359 for (i = 0; i < 1000; i++) 00360 { 00361 EVP_DigestInit_ex(&md2,EVP_md5(), NULL); 00362 EVP_DigestUpdate(&md2, (i & 1) ? (unsigned const char *) passwd : buf, 00363 (i & 1) ? passwd_len : sizeof buf); 00364 if (i % 3) 00365 EVP_DigestUpdate(&md2, salt_out, salt_len); 00366 if (i % 7) 00367 EVP_DigestUpdate(&md2, passwd, passwd_len); 00368 EVP_DigestUpdate(&md2, (i & 1) ? buf : (unsigned const char *) passwd, 00369 (i & 1) ? sizeof buf : passwd_len); 00370 EVP_DigestFinal_ex(&md2, buf, NULL); 00371 } 00372 EVP_MD_CTX_cleanup(&md2); 00373 00374 { 00375 /* transform buf into output string */ 00376 00377 unsigned char buf_perm[sizeof buf]; 00378 int dest, source; 00379 char *output; 00380 00381 /* silly output permutation */ 00382 for (dest = 0, source = 0; dest < 14; dest++, source = (source + 6) % 17) 00383 buf_perm[dest] = buf[source]; 00384 buf_perm[14] = buf[5]; 00385 buf_perm[15] = buf[11]; 00386 #ifndef PEDANTIC /* Unfortunately, this generates a "no effect" warning */ 00387 assert(16 == sizeof buf_perm); 00388 #endif 00389 00390 output = salt_out + salt_len; 00391 assert(output == out_buf + strlen(out_buf)); 00392 00393 *output++ = '$'; 00394 00395 for (i = 0; i < 15; i += 3) 00396 { 00397 *output++ = cov_2char[buf_perm[i+2] & 0x3f]; 00398 *output++ = cov_2char[((buf_perm[i+1] & 0xf) << 2) | 00399 (buf_perm[i+2] >> 6)]; 00400 *output++ = cov_2char[((buf_perm[i] & 3) << 4) | 00401 (buf_perm[i+1] >> 4)]; 00402 *output++ = cov_2char[buf_perm[i] >> 2]; 00403 } 00404 assert(i == 15); 00405 *output++ = cov_2char[buf_perm[i] & 0x3f]; 00406 *output++ = cov_2char[buf_perm[i] >> 6]; 00407 *output = 0; 00408 assert(strlen(out_buf) < sizeof(out_buf)); 00409 } 00410 EVP_MD_CTX_cleanup(&md); 00411 00412 return out_buf; 00413 }
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Initial value: {
0x2E,0x2F,0x30,0x31,0x32,0x33,0x34,0x35,
0x36,0x37,0x38,0x39,0x41,0x42,0x43,0x44,
0x45,0x46,0x47,0x48,0x49,0x4A,0x4B,0x4C,
0x4D,0x4E,0x4F,0x50,0x51,0x52,0x53,0x54,
0x55,0x56,0x57,0x58,0x59,0x5A,0x61,0x62,
0x63,0x64,0x65,0x66,0x67,0x68,0x69,0x6A,
0x6B,0x6C,0x6D,0x6E,0x6F,0x70,0x71,0x72,
0x73,0x74,0x75,0x76,0x77,0x78,0x79,0x7A
}
Definition at line 30 of file passwd.c. Referenced by DES_fcrypt(), do_passwd(), and md5crypt(). |