contiki/core/net/llsec/anti-replay.h

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/*
* Copyright (c) 2014, Hasso-Plattner-Institut.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* This file is part of the Contiki operating system.
*
*/
/**
* \file
* Interface to anti-replay mechanisms.
* \author
* Konrad Krentz <konrad.krentz@gmail.com>
*/
/**
* \addtogroup llsec802154
* @{
*/
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#ifndef ANTI_REPLAY_H
#define ANTI_REPLAY_H
#include "contiki.h"
struct anti_replay_info {
uint32_t last_broadcast_counter;
uint32_t last_unicast_counter;
};
/**
* \brief Sets the frame counter packetbuf attributes.
*/
void anti_replay_set_counter(void);
/**
* \brief Gets the frame counter from packetbuf.
*/
uint32_t anti_replay_get_counter(void);
/**
* \brief Initializes the anti-replay information about the sender
* \param info Anti-replay information about the sender
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*/
void anti_replay_init_info(struct anti_replay_info *info);
/**
* \brief Checks if received frame was replayed
* \param info Anti-replay information about the sender
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* \retval 0 <-> received frame was not replayed
*/
int anti_replay_was_replayed(struct anti_replay_info *info);
#endif /* ANTI_REPLAY_H */
/** @} */