1 /* 2 * Copyright (c) 2011 Alex Hornung <alex@alexhornung.com>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * 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 14 * distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 19 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 20 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 22 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 24 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 25 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 26 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 #include <errno.h> 31 #include <openssl/evp.h> 32 33 #include "tcplay.h" 34 35 36 int 37 pbkdf2(struct pbkdf_prf_algo *hash, const char *pass, int passlen, 38 const unsigned char *salt, int saltlen, 39 int keylen, unsigned char *out) 40 { 41 const EVP_MD *md; 42 int r; 43 44 OpenSSL_add_all_algorithms(); 45 46 md = EVP_get_digestbyname(hash->name); 47 if (md == NULL) { 48 tc_log(1, "Hash %s not found\n", hash->name); 49 return ENOENT; 50 } 51 r = PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, 52 hash->iteration_count, md, keylen, out); 53 54 if (r == 0) { 55 tc_log(1, "Error in PBKDF2\n"); 56 return EINVAL; 57 } 58 59 return 0; 60 } 61 62