From 91adebe749beb0dc23cacaea316cb2b724776aad Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Wed, 13 Jun 2007 05:44:24 +0000 Subject: r23456: Update Samba4 to current lorikeet-heimdal. Andrew Bartlett (This used to be commit ae0f81ab235c72cceb120bcdeb051a483cf3cc4f) --- source4/heimdal/lib/hcrypto/pkcs5.c | 116 ++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) create mode 100644 source4/heimdal/lib/hcrypto/pkcs5.c (limited to 'source4/heimdal/lib/hcrypto/pkcs5.c') diff --git a/source4/heimdal/lib/hcrypto/pkcs5.c b/source4/heimdal/lib/hcrypto/pkcs5.c new file mode 100644 index 0000000000..85b8713cba --- /dev/null +++ b/source4/heimdal/lib/hcrypto/pkcs5.c @@ -0,0 +1,116 @@ +/* + * Copyright (c) 2006 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifdef HAVE_CONFIG_H +#include +#endif + +RCSID("$Id: pkcs5.c 17445 2006-05-05 10:37:46Z lha $"); + +#ifdef KRB5 +#include +#endif + +#include +#include + +#include +#include + +#include + +int +PKCS5_PBKDF2_HMAC_SHA1(const void * password, size_t password_len, + const void * salt, size_t salt_len, + unsigned long iter, + size_t keylen, void *key) +{ + size_t datalen, leftofkey, checksumsize; + char *data, *tmpcksum; + uint32_t keypart; + const EVP_MD *md; + unsigned long i; + int j; + char *p; + unsigned int hmacsize; + + md = EVP_sha1(); + checksumsize = EVP_MD_size(md); + datalen = salt_len + 4; + + tmpcksum = malloc(checksumsize + datalen); + if (tmpcksum == NULL) + return 0; + + data = &tmpcksum[checksumsize]; + + memcpy(data, salt, salt_len); + + keypart = 1; + leftofkey = keylen; + p = key; + + while (leftofkey) { + int len; + + if (leftofkey > checksumsize) + len = checksumsize; + else + len = leftofkey; + + data[datalen - 4] = (keypart >> 24) & 0xff; + data[datalen - 3] = (keypart >> 16) & 0xff; + data[datalen - 2] = (keypart >> 8) & 0xff; + data[datalen - 1] = (keypart) & 0xff; + + HMAC(md, password, password_len, data, datalen, + tmpcksum, &hmacsize); + + memcpy(p, tmpcksum, len); + for (i = 1; i < iter; i++) { + HMAC(md, password, password_len, tmpcksum, checksumsize, + tmpcksum, &hmacsize); + + for (j = 0; j < len; j++) + p[j] ^= tmpcksum[j]; + } + + p += len; + leftofkey -= len; + keypart++; + } + + free(tmpcksum); + + return 1; +} -- cgit