86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/**
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* \addtogroup llsec802154
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* @{
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*/
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/*
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* Copyright (c) 2013, Hasso-Plattner-Institut.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* CCM* header file.
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* \author
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* Konrad Krentz <konrad.krentz@gmail.com>
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*/
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#ifndef CCM_H_
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#define CCM_H_
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#include "contiki.h"
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#include "net/mac/frame802154.h"
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/* see RFC 3610 */
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#define CCM_AUTH_FLAGS(Adata, M) ((Adata ? (1 << 6) : 0) | (((M - 2) >> 1) << 3) | 1)
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#define CCM_ENCRYPTION_FLAGS 1
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#ifdef CCM_CONF
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#define CCM CCM_CONF
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#else /* CCM_CONF */
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#define CCM ccm_driver
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#endif /* CCM_CONF */
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/**
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* Structure of CCM drivers.
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*/
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struct ccm_driver {
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/**
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* \brief Generates a MIC over the frame in the packetbuf.
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* \param result The generated MIC will be put here
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* \param mic_len <= 16; set to LLSEC802154_MIC_LENGTH to be compliant
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*/
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void (* mic)(const uint8_t *extended_source_address,
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uint8_t *result,
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uint8_t mic_len);
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/**
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* \brief XORs the frame in the packetbuf with the key stream.
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*/
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void (* ctr)(const uint8_t *extended_source_address);
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};
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extern const struct ccm_driver CCM;
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#endif /* CCM_H_ */
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/** @} */
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