Varun Bahl / CyaSSL-Encryp

cya_u

Fork of CyaSSL-forEncrypt by Mobius IoT

pwdbased.c@0:5045d2638c29, 2011-02-05 (annotated)

Committer:
toddouska
Date:
Sat Feb 05 01:09:17 2011 +0000
Revision:
0:5045d2638c29
Beta Version

Who changed what in which revision?

UserRevisionLine numberNew contents of line
toddouska 0:5045d2638c29 1 /* pwdbased.c
toddouska 0:5045d2638c29 2 *
toddouska 0:5045d2638c29 3 * Copyright (C) 2006-2010 Sawtooth Consulting Ltd.
toddouska 0:5045d2638c29 4 *
toddouska 0:5045d2638c29 5 * This file is part of CyaSSL.
toddouska 0:5045d2638c29 6 *
toddouska 0:5045d2638c29 7 * CyaSSL is free software; you can redistribute it and/or modify
toddouska 0:5045d2638c29 8 * it under the terms of the GNU General Public License as published by
toddouska 0:5045d2638c29 9 * the Free Software Foundation; either version 2 of the License, or
toddouska 0:5045d2638c29 10 * (at your option) any later version.
toddouska 0:5045d2638c29 11 *
toddouska 0:5045d2638c29 12 * CyaSSL is distributed in the hope that it will be useful,
toddouska 0:5045d2638c29 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
toddouska 0:5045d2638c29 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
toddouska 0:5045d2638c29 15 * GNU General Public License for more details.
toddouska 0:5045d2638c29 16 *
toddouska 0:5045d2638c29 17 * You should have received a copy of the GNU General Public License
toddouska 0:5045d2638c29 18 * along with this program; if not, write to the Free Software
toddouska 0:5045d2638c29 19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
toddouska 0:5045d2638c29 20 */
toddouska 0:5045d2638c29 21
toddouska 0:5045d2638c29 22
toddouska 0:5045d2638c29 23 #ifndef NO_PWDBASED
toddouska 0:5045d2638c29 24
toddouska 0:5045d2638c29 25 #include "pwdbased.h"
toddouska 0:5045d2638c29 26
toddouska 0:5045d2638c29 27
toddouska 0:5045d2638c29 28 int PBKDF1(byte* output, const byte* passwd, int pLen, const byte* salt,
toddouska 0:5045d2638c29 29 int sLen, int iterations, int kLen, int hashType)
toddouska 0:5045d2638c29 30 {
toddouska 0:5045d2638c29 31 Md5 md5;
toddouska 0:5045d2638c29 32 Sha sha;
toddouska 0:5045d2638c29 33 int hLen = (hashType == MD5) ? MD5_DIGEST_SIZE : SHA_DIGEST_SIZE;
toddouska 0:5045d2638c29 34 int i;
toddouska 0:5045d2638c29 35 byte buffer[SHA_DIGEST_SIZE]; /* max size */
toddouska 0:5045d2638c29 36
toddouska 0:5045d2638c29 37 if (hashType != MD5 && hashType != SHA)
toddouska 0:5045d2638c29 38 return -1;
toddouska 0:5045d2638c29 39
toddouska 0:5045d2638c29 40 if (kLen > hLen)
toddouska 0:5045d2638c29 41 return -1;
toddouska 0:5045d2638c29 42
toddouska 0:5045d2638c29 43 if (iterations < 1)
toddouska 0:5045d2638c29 44 return -1;
toddouska 0:5045d2638c29 45
toddouska 0:5045d2638c29 46 if (hashType == MD5) {
toddouska 0:5045d2638c29 47 InitMd5(&md5);
toddouska 0:5045d2638c29 48 Md5Update(&md5, passwd, pLen);
toddouska 0:5045d2638c29 49 Md5Update(&md5, salt, sLen);
toddouska 0:5045d2638c29 50 Md5Final(&md5, buffer);
toddouska 0:5045d2638c29 51 }
toddouska 0:5045d2638c29 52 else {
toddouska 0:5045d2638c29 53 InitSha(&sha);
toddouska 0:5045d2638c29 54 ShaUpdate(&sha, passwd, pLen);
toddouska 0:5045d2638c29 55 ShaUpdate(&sha, salt, sLen);
toddouska 0:5045d2638c29 56 ShaFinal(&sha, buffer);
toddouska 0:5045d2638c29 57 }
toddouska 0:5045d2638c29 58
toddouska 0:5045d2638c29 59 for (i = 1; i < iterations; i++) {
toddouska 0:5045d2638c29 60 if (hashType == MD5) {
toddouska 0:5045d2638c29 61 Md5Update(&md5, buffer, hLen);
toddouska 0:5045d2638c29 62 Md5Final(&md5, buffer);
toddouska 0:5045d2638c29 63 }
toddouska 0:5045d2638c29 64 else {
toddouska 0:5045d2638c29 65 ShaUpdate(&sha, buffer, hLen);
toddouska 0:5045d2638c29 66 ShaFinal(&sha, buffer);
toddouska 0:5045d2638c29 67 }
toddouska 0:5045d2638c29 68 }
toddouska 0:5045d2638c29 69 XMEMCPY(output, buffer, kLen);
toddouska 0:5045d2638c29 70
toddouska 0:5045d2638c29 71 return 0;
toddouska 0:5045d2638c29 72 }
toddouska 0:5045d2638c29 73
toddouska 0:5045d2638c29 74
toddouska 0:5045d2638c29 75 #endif /* NO_PWDBASED */
toddouska 0:5045d2638c29 76