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/*
* Copyright (c) 2011 Alex Hornung <alex@alexhornung.com>.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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
* COPYRIGHT HOLDERS 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.
*/

#include <errno.h>
#include <openssl/evp.h>

#include "tcplay.h"


int
pbkdf2(struct pbkdf_prf_algo *hash, const char *pass, int passlen,
    const unsigned char *salt, int saltlen,
    int keylen, unsigned char *out)
{
const EVP_MD *md;
int r;

OpenSSL_add_all_algorithms();

md = EVP_get_digestbyname(hash->name);
if (md == NULL) {
tc_log(1, "Hash %s not found\n", hash->name);
return ENOENT;
}
r = PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen,
hash->iteration_count, md, keylen, out);

if (r == 0) {
tc_log(1, "Error in PBKDF2\n");
return EINVAL;
}

return 0;
}

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