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_encryptedPacket_h_INCLUDED
47 #define ANYTUN_encryptedPacket_h_INCLUDED
49 #include "datatypes.h"
53 class EncryptedPacket : public Buffer
59 * @param the length of the payload
60 * @param allow reallocation of buffer
62 EncryptedPacket(uint32_t payload_length, uint32_t auth_tag_length, bool allow_realloc = false);
67 ~EncryptedPacket() {};
70 * Get the length of the header
71 * @return the length of the header
73 static uint32_t getHeaderLength();
76 * Get the sequence number
77 * @return seqence number
79 seq_nr_t getSeqNr() const;
82 * Set the seqence number
83 * @param seq_nr sequence number
85 void setSeqNr(seq_nr_t seq_nr);
91 sender_id_t getSenderId() const;
95 * @param sender_id sender id
97 void setSenderId(sender_id_t sender_id);
100 * Get the mulitplex id
101 * @return multiplex id
103 mux_t getMux() const;
106 * Set the multiplex id
107 * @param mux multiplex id
109 void setMux(mux_t mux);
112 * Set the header of a packet
113 * @param seq_nr sequence number
114 * @param sender_id sender id
115 * @param mux multiplex id
117 void setHeader(seq_nr_t seq_nr, sender_id_t sender_id, mux_t mux);
120 * Get the length of the payload
121 * @return the length of the payload
123 uint32_t getPayloadLength() const;
126 * Set the length of the payload
127 * @param length length of the payload
129 void setPayloadLength(uint32_t payload_length);
132 * Get the the payload
133 * @return the Pointer to the payload
135 uint8_t* getPayload();
138 uint8_t* getAuthenticatedPortion();
139 uint32_t getAuthenticatedPortionLength();
141 void withAuthTag(bool b);
143 void removeAuthTag();
144 uint8_t* getAuthTag();
145 uint32_t getAuthTagLength();
149 EncryptedPacket(const EncryptedPacket& src);
154 #pragma pack(push, 1)
156 struct ATTR_PACKED HeaderStruct {
158 sender_id_t sender_id;
165 struct HeaderStruct* header_;
168 uint32_t auth_tag_length_;