/*      $KAME: rijndael.h,v 1.6 2003/08/28 08:36:32 itojun Exp $        */

/**
 * rijndael-alg-fst.h
 *
 * @version 3.0 (December 2000)
 *
 * Optimised ANSI C code for the Rijndael cipher (now AES)
 *
 * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
 * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
 * @author Paulo Barreto <paulo.barreto@terra.com.br>
 *
 * This code is hereby placed in the public domain.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''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 AUTHORS 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 __RIJNDAEL_H
#define __RIJNDAEL_H

#define RIJNDAEL_MAXKC  (256/32)
#define RIJNDAEL_MAXKB  (256/8)
#define RIJNDAEL_MAXNR  14

typedef struct {
        int     decrypt;
        int     Nr;             /* key-length-dependent number of rounds */
        uint32_t ek[4 * (RIJNDAEL_MAXNR + 1)];  /* encrypt key schedule */
        uint32_t dk[4 * (RIJNDAEL_MAXNR + 1)];  /* decrypt key schedule */
} rijndael_ctx;

void    rijndael_set_key(rijndael_ctx *, const u_char *, int);
void    rijndael_decrypt(const rijndael_ctx *, const u_char *, u_char *);
void    rijndael_encrypt(const rijndael_ctx *, const u_char *, u_char *);

int     rijndaelKeySetupEnc(uint32_t [/*4*(Nr+1)*/], const uint8_t [], int);
int     rijndaelKeySetupDec(uint32_t [/*4*(Nr+1)*/], const uint8_t [], int);
void    rijndaelEncrypt(const uint32_t [/*4*(Nr+1)*/], int,
        const uint8_t[16], uint8_t [16]);
void    rijndaelDecrypt(const uint32_t [/*4*(Nr+1)*/], int,
        const uint8_t [16], uint8_t [16]);

#endif /* __RIJNDAEL_H */