Contiki-NG
anti-replay.h
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1 /*
2  * Copyright (c) 2014, Hasso-Plattner-Institut.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  * notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  * notice, this list of conditions and the following disclaimer in the
12  * documentation and/or other materials provided with the distribution.
13  * 3. Neither the name of the Institute nor the names of its contributors
14  * may be used to endorse or promote products derived from this software
15  * without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * This file is part of the Contiki operating system.
30  *
31  */
32 
33 /**
34  * \file
35  * Interface to anti-replay mechanisms.
36  * \author
37  * Konrad Krentz <konrad.krentz@gmail.com>
38  */
39 
40 /**
41  * \addtogroup llsec802154
42  * @{
43  */
44 
45 #ifndef ANTI_REPLAY_H
46 #define ANTI_REPLAY_H
47 
48 #include "contiki.h"
49 
50 struct anti_replay_info {
51  uint32_t last_broadcast_counter;
52  uint32_t last_unicast_counter;
53 };
54 
55 /**
56  * \brief Sets the frame counter packetbuf attributes.
57  */
58 void anti_replay_set_counter(void);
59 
60 /**
61  * \brief Gets the frame counter from packetbuf.
62  */
63 uint32_t anti_replay_get_counter(void);
64 
65 /**
66  * \brief Initializes the anti-replay information about the sender
67  * \param info Anti-replay information about the sender
68  */
69 void anti_replay_init_info(struct anti_replay_info *info);
70 
71 /**
72  * \brief Checks if received frame was replayed
73  * \param info Anti-replay information about the sender
74  * \retval 0 <-> received frame was not replayed
75  */
76 int anti_replay_was_replayed(struct anti_replay_info *info);
77 
78 #endif /* ANTI_REPLAY_H */
79 
80 /** @} */
int anti_replay_was_replayed(struct anti_replay_info *info)
Checks if received frame was replayed.
void anti_replay_set_counter(void)
Sets the frame counter packetbuf attributes.
uint32_t anti_replay_get_counter(void)
Gets the frame counter from packetbuf.
void anti_replay_init_info(struct anti_replay_info *info)
Initializes the anti-replay information about the sender.