4 * The secure anycast tunneling protocol (satp) defines a protocol used
5 * for communication between any combination of unicast and anycast
6 * tunnel endpoints. It has less protocol overhead than IPSec in Tunnel
7 * mode and allows tunneling of every ETHER TYPE protocol (e.g.
8 * ethernet, ip, arp ...). satp directly includes cryptography and
9 * message authentication based on the methods used by SRTP. It is
10 * intended to deliver a generic, scaleable and secure solution for
11 * tunneling and relaying of packets of any protocol.
14 * Copyright (C) 2007-2014 Markus Grüneis, Othmar Gsenger, Erwin Nindl,
15 * Christian Pointner <satp@wirdorange.org>
17 * This file is part of Anytun.
19 * Anytun is free software: you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation, either version 3 of the License, or
24 * Anytun is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
29 * You should have received a copy of the GNU General Public License
30 * along with Anytun. If not, see <http://www.gnu.org/licenses/>.
32 * In addition, as a special exception, the copyright holders give
33 * permission to link the code of portions of this program with the
34 * OpenSSL library under certain conditions as described in each
35 * individual source file, and distribute linked combinations
37 * You must obey the GNU General Public License in all respects
38 * for all of the code used other than OpenSSL. If you modify
39 * file(s) with this exception, you may extend this exception to your
40 * version of the file(s), but you are not obligated to do so. If you
41 * do not wish to do so, delete this exception statement from your
42 * version. If you delete this exception statement from all source
43 * files in the program, then also delete it here.
46 #ifndef ANYTUN_cryptinit_hpp_INCLUDED
47 #define ANYTUN_cryptinit_hpp_INCLUDED
51 #if defined(USE_GCRYPT)
54 #if defined(BOOST_HAS_PTHREADS)
55 // boost thread callbacks for libgcrypt
56 GCRY_THREAD_OPTION_PTHREAD_IMPL;
58 #error You can not use gcrypt without pthreads - please configure Boost to use pthreads!
61 #define MIN_GCRYPT_VERSION "1.2.0"
65 #if defined(BOOST_HAS_PTHREADS)
66 // make libgcrypt thread safe
67 // this must be called before any other libgcrypt call
68 gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
70 #error You can not use gcrypt without pthreads - please configure Boost to use pthreads!
73 // this must be called right after the GCRYCTL_SET_THREAD_CBS command
74 // no other function must be called till now
75 if(!gcry_check_version(MIN_GCRYPT_VERSION)) {
76 std::cout << "initLibGCrypt: Invalid Version of libgcrypt, should be >= " << MIN_GCRYPT_VERSION << std::endl;
80 gcry_error_t err = gcry_control(GCRYCTL_DISABLE_SECMEM, 0);
82 std::cout << "initLibGCrypt: Failed to disable secure memory: " << AnytunGpgError(err) << std::endl;
86 // Tell Libgcrypt that initialization has completed.
87 err = gcry_control(GCRYCTL_INITIALIZATION_FINISHED);
89 std::cout << "initLibGCrypt: Failed to finish initialization: " << AnytunGpgError(err) << std::endl;
93 cLog.msg(Log::PRIO_NOTICE) << "initLibGCrypt: libgcrypt init finished";
104 #if defined(USE_SSL_CRYPTO)
106 #elif defined(USE_NETTLE)
108 #else // USE_GCRYPT is the default
109 return initLibGCrypt();