rijndael.h

   1 /*      $OpenBSD: rijndael.h,v 1.12 2001/12/19 07:18:56 deraadt Exp $ */
   2
   3 /**
   4  * rijndael-alg-fst.h
   5  *
   6  * @version 3.0 (December 2000)
   7  *
   8  * Optimised ANSI C code for the Rijndael cipher (now AES)
   9  *
  10  * @author Vincent Rijmen <vincent.rijmen@esat.kuleuven.ac.be>
  11  * @author Antoon Bosselaers <antoon.bosselaers@esat.kuleuven.ac.be>
  12  * @author Paulo Barreto <paulo.barreto@terra.com.br>
  13  *
  14  * This code is hereby placed in the public domain.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ''AS IS'' AND ANY EXPRESS
  17  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  18  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE
  20  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  23  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  24  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  25  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  26  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28 #ifndef __RIJNDAEL_H
  29 #define __RIJNDAEL_H
  30
  31 #define MAXKC   (256/32)
  32 #define MAXKB   (256/8)
  33 #define MAXNR   14
  34
  35 typedef unsigned char   u8;
  36 typedef unsigned short  u16;
  37 typedef unsigned int    u32;
  38
  39 /*  The structure for key information */
  40 typedef struct {
  41         int     decrypt;
  42         int     Nr;                     /* key-length-dependent number of rounds */
  43         u32     ek[4*(MAXNR + 1)];      /* encrypt key schedule */
  44         u32     dk[4*(MAXNR + 1)];      /* decrypt key schedule */
  45 } rijndael_ctx;
  46
  47 void     rijndael_set_key(rijndael_ctx *, u_char *, int, int);
  48 void     rijndael_decrypt(rijndael_ctx *, u_char *, u_char *);
  49 void     rijndael_encrypt(rijndael_ctx *, u_char *, u_char *);
  50
  51 #endif /* __RIJNDAEL_H */