text: /****************************************************************************
   * tools/cxd56/clefia.h
   *
   * Copyright (C) 2007, 2008 Sony Corporation
   *
   * 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 NuttX 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 COPYRIGHT HOLDERS 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
   * COPYRIGHT OWNER 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.
   ****************************************************************************/
  
  #ifndef _TOOLS_CXD56_CLEFIA_H_
  #define _TOOLS_CXD56_CLEFIA_H_
  
  /****************************************************************************
   * Public Types
   ****************************************************************************/
  
  struct cipher
    {
      int mode;
      int dir;
      uint8_t rk[8 * 26 + 16];
      uint8_t vector[16];
      int round;
      uint8_t k1[16];
      uint8_t k2[16];
    };
  
  /****************************************************************************
   * Public Function Prototypes
   ****************************************************************************/
  
  struct cipher *cipher_init(uint8_t * key, uint8_t * iv);
  void cipher_deinit(struct cipher *c);
  int cipher_calc_cmac(struct cipher *c, void *data, int size, void *cmac);
  void bytexor(unsigned char *dst, const unsigned char *a,
               const unsigned char *b, int bytelen);
  int clefiakeyset(unsigned char *rk, const unsigned char *skey);
  void clefiaencrypt(unsigned char *ct, const unsigned char *pt,
                     const unsigned char *rk, const int r);
  
  #endif
  