osd-contiki/core/lib/ccm-star.h
Justin King-Lacroix 30704e5afc CCM* module now accepts fixed-size 13-byte nonces
also adjusted variable naming conventions in CCM* module
to use 'nonce' and 'iv' in line with RFC 3610 terminology
2015-06-29 22:51:00 +02:00

91 lines
3.2 KiB
C

/*
* 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
* Original: Konrad Krentz <konrad.krentz@gmail.com>
* Generified version: Justin King-Lacroix <justin.kinglacroix@gmail.com>
*/
#ifndef CCM_STAR_H_
#define CCM_STAR_H_
#include "contiki.h"
#ifdef CCM_STAR_CONF
#define CCM_STAR CCM_STAR_CONF
#else /* CCM_STAR_CONF */
#define CCM_STAR ccm_star_driver
#endif /* CCM_STAR_CONF */
#define CCM_STAR_NONCE_LENGTH 13
/**
* Structure of CCM* drivers.
*/
struct ccm_star_driver {
/**
* \brief Generates a MIC over the data supplied.
* \param data The data buffer to read.
* \param data_length The data buffer length.
* \param nonce The nonce to use. CCM_STAR_NONCE_LENGTH bytes long.
* \param result The generated MIC will be put here
* \param mic_len The size of the MIC to be generated. <= 16.
*/
void (* mic)(const uint8_t* data, uint8_t data_length,
const uint8_t* nonce,
const uint8_t* add, uint8_t add_len,
uint8_t *result,
uint8_t mic_len);
/**
* \brief XORs the frame in the packetbuf with the key stream.
* \param data The data buffer to read.
* \param data_length The data buffer length.
* \param nonce The nonce to use. CCM_STAR_NONCE_LENGTH bytes long.
*/
void (* ctr)( uint8_t* data, uint8_t data_length,
const uint8_t* nonce);
/**
* \brief Sets the key in use. Default implementation calls AES_128.set_key()
* \param key The key to use.
*/
void (* set_key)(const uint8_t* key);
};
extern const struct ccm_star_driver CCM_STAR;
#endif /* CCM_STAR_H_ */