text: /*
   * 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         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);
    
    /**
     * \brief         Combines authentication and encryption.
     * \param nonce   The nonce to use. CCM_STAR_NONCE_LENGTH bytes long.
     * \param m       message to encrypt or decrypt
     * \param a       Additional authenticated data
     * \param result  The generated MIC will be put here
     * \param mic_len The size of the MIC to be generated. <= 16.
     * \param forward != 0 if used in forward direction.
     */
    void (* aead)(const uint8_t* nonce,
        uint8_t* m, uint8_t m_len,
        const uint8_t* a, uint8_t a_len,
        uint8_t *result, uint8_t mic_len,
        int forward);
  };
  
  extern const struct ccm_star_driver CCM_STAR;
  
  #endif /* CCM_STAR_H_ */
  