* tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
* mode and allows tunneling of every ETHER TYPE protocol (e.g.
* ethernet, ip, arp ...). satp directly includes cryptography and
- * message authentication based on the methodes used by SRTP. It is
+ * message authentication based on the methods used by SRTP. It is
* intended to deliver a generic, scaleable and secure solution for
* tunneling and relaying of packets of any protocol.
- *
*
- * Copyright (C) 2007-2008 Christian Pointner <equinox@anytun.org>
+ *
+ * Copyright (C) 2007-2014 Christian Pointner <equinox@anytun.org>
*
* This file is part of uAnytun.
*
*
* You should have received a copy of the GNU General Public License
* along with uAnytun. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * 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.
*/
#ifndef UANYTUN_key_derivation_h_INCLUDED
#define UANYTUN_key_derivation_h_INCLUDED
-#ifndef USE_SSL_CRYPTO
-#include <gcrypt.h>
-#else
+#if defined(USE_SSL_CRYPTO)
#include <openssl/aes.h>
+#elif defined(USE_NETTLE)
+#include <nettle/aes.h>
+#else // USE_GCRYPT is the default
+#include <gcrypt.h>
#endif
#include "options.h"
typedef union key_derivation_aesctr_ctr_union key_derivation_aesctr_ctr_t;
struct key_derivation_aesctr_param_struct {
-#ifndef USE_SSL_CRYPTO
- gcry_cipher_hd_t handle_;
-#else
+#if defined(USE_SSL_CRYPTO)
AES_KEY aes_key_;
u_int8_t ecount_buf_[AES_BLOCK_SIZE];
+#elif defined(USE_NETTLE)
+ struct aes_ctx ctx_;
+#else // USE_GCRYPT is the default
+ gcry_cipher_hd_t handle_;
#endif
key_derivation_aesctr_ctr_t ctr_;
};