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/*
Copyright (C) 2005, 2004 Erik Eliasson, Johan Bilien
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/*
* Authors: Erik Eliasson <eliasson@it.kth.se>
* Johan Bilien <jobi@via.ecp.fr>
*/
#include <openssl/hmac.h>
#include <libzrtpcpp/crypto/hmac256.h>
void hmac_sha384(uint8_t* key, uint32_t key_length,
uint8_t* data, int32_t data_length,
uint8_t* mac, uint32_t* mac_length)
{
unsigned int tmp;
HMAC( EVP_sha384(), key, key_length, data, data_length, mac, &tmp );
*mac_length = tmp;
}
void hmac_sha384(uint8_t* key, uint32_t key_length,
uint8_t* data_chunks[],
uint32_t data_chunck_length[],
uint8_t* mac, uint32_t* mac_length )
{
unsigned int tmp;
HMAC_CTX ctx;
HMAC_CTX_init( &ctx );
HMAC_Init_ex( &ctx, key, key_length, EVP_sha384(), NULL );
while( *data_chunks ){
HMAC_Update( &ctx, *data_chunks, *data_chunck_length );
data_chunks ++;
data_chunck_length ++;
}
HMAC_Final( &ctx, mac, &tmp);
*mac_length = tmp;
HMAC_CTX_cleanup( &ctx );
}
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