X-Git-Url: https://git.syn-net.org/?p=debian%2Fuanytun.git;a=blobdiff_plain;f=src%2Fauth_algo.h;h=4ac0f40f4364066f8f2fe5505b546f988176ad1a;hp=baf32c5ff5b14d2ab9c282f2737c5c1030509bdc;hb=2ca04c970ea76d18da53fbbc2c7c7281797af79d;hpb=b81b2c1954fe3e3317e6fa260c5ffdc9eeee966c

diff --git a/src/auth_algo.h b/src/auth_algo.h
index baf32c5..4ac0f40 100644
--- a/src/auth_algo.h
+++ b/src/auth_algo.h
@@ -10,18 +10,19 @@
  *  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.
  *
  *  uAnytun is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License version 3 as
- *  published by the Free Software Foundation.
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  any later version.
  *
  *  uAnytun is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -30,15 +31,30 @@
  *
  *  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 _AUTH_ALGO_H_
-#define _AUTH_ALGO_H_
+#ifndef UANYTUN_auth_algo_h_INCLUDED
+#define UANYTUN_auth_algo_h_INCLUDED
 
-#ifndef USE_SSL_CRYPTO
-#include <gcrypt.h>
-#else
+#if defined(USE_SSL_CRYPTO)
 #include <openssl/hmac.h>
+#elif defined(USE_NETTLE)
+#include <nettle/hmac.h>
+#else  // USE_GCRYPT is the default
+#include <gcrypt.h>
 #endif
 #include "key_derivation.h"
 #include "encrypted_packet.h"
@@ -65,10 +81,12 @@ int auth_algo_check_tag(auth_algo_t* aa, key_derivation_t* kd, key_derivation_di
 #define SHA1_LENGTH 20
 
 struct auth_algo_sha1_param_struct {
-#ifndef USE_SSL_CRYPTO
+#if defined(USE_SSL_CRYPTO)
+  HMAC_CTX *ctx_;
+#elif defined(USE_NETTLE)
+  struct hmac_sha1_ctx ctx_;
+#else  // USE_GCRYPT is the default
   gcry_md_hd_t handle_;
-#else
-  HMAC_CTX ctx_;
 #endif
 };
 typedef struct auth_algo_sha1_param_struct auth_algo_sha1_param_t;