| /* |
| * Copyright (c) 2013, 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 |
| * CCM* header file. |
| * \author |
| * Konrad Krentz <konrad.krentz@gmail.com> |
| */ |
| |
| /** |
| * \addtogroup llsec802154 |
| * @{ |
| */ |
| |
| #ifndef CCM_STAR_H_ |
| #define CCM_STAR_H_ |
| |
| #include <net/l2_buf.h> |
| |
| #include "contiki.h" |
| #include "contiki/mac/frame802154.h" |
| |
| /* see RFC 3610 */ |
| #define CCM_STAR_AUTH_FLAGS(Adata, M) ((Adata ? (1 << 6) : 0) | (((M - 2) >> 1) << 3) | 1) |
| #define CCM_STAR_ENCRYPTION_FLAGS 1 |
| |
| #ifdef CCM_STAR_CONF |
| #define CCM_STAR CCM_STAR_CONF |
| #else /* CCM_STAR_CONF */ |
| #define CCM_STAR ccm_star_driver |
| #endif /* CCM_STAR_CONF */ |
| |
| /** |
| * Structure of CCM* drivers. |
| */ |
| struct ccm_star_driver { |
| |
| /** |
| * \brief Generates a MIC over the frame in the packetbuf. |
| * \param result The generated MIC will be put here |
| * \param mic_len <= 16; set to LLSEC802154_MIC_LENGTH to be compliant |
| */ |
| void (* mic)(struct net_buf *buf, const uint8_t *extended_source_address, |
| uint8_t *result, |
| uint8_t mic_len); |
| |
| /** |
| * \brief XORs the frame in the packetbuf with the key stream. |
| */ |
| void (* ctr)(struct net_buf *buf, const uint8_t *extended_source_address); |
| }; |
| |
| extern const struct ccm_star_driver CCM_STAR; |
| |
| #endif /* CCM_STAR_H_ */ |
| |
| /** @} */ |