| /* |
| * 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 |
| * @{ |
| */ |
| |
| #ifndef ANTI_REPLAY_H |
| #define ANTI_REPLAY_H |
| |
| #include <net/l2_buf.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(struct net_buf *buf); |
| |
| /** |
| * \brief Gets the frame counter from packetbuf. |
| */ |
| uint32_t anti_replay_get_counter(struct net_buf *buf); |
| |
| /** |
| * \brief Initializes the anti-replay information about the sender |
| * \param info Anti-replay information about the sender |
| */ |
| void anti_replay_init_info(struct net_buf *buf, struct anti_replay_info *info); |
| |
| /** |
| * \brief Checks if received frame was replayed |
| * \param info Anti-replay information about the sender |
| * \retval 0 <-> received frame was not replayed |
| */ |
| int anti_replay_was_replayed(struct net_buf *buf, struct anti_replay_info *info); |
| |
| #endif /* ANTI_REPLAY_H */ |
| |
| /** @} */ |