crypto/openssh/rijndael.h

   1 /*      $OpenBSD: rijndael.h,v 1.14 2014/04/29 15:42:07 markus 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 _PRIVATE_RIJNDAEL_H
  29 #define _PRIVATE_RIJNDAEL_H
  30
  31 #define AES_MAXKEYBITS  (256)
  32 #define AES_MAXKEYBYTES (AES_MAXKEYBITS/8)
  33 /* for 256-bit keys, fewer for less */
  34 #define AES_MAXROUNDS   14
  35
  36 typedef unsigned char   u8;
  37 typedef unsigned short  u16;
  38 typedef unsigned int    u32;
  39
  40 int     rijndaelKeySetupEnc(unsigned int [], const unsigned char [], int);
  41 void    rijndaelEncrypt(const unsigned int [], int, const unsigned char [],
  42             unsigned char []);
  43
  44 /*  The structure for key information */
  45 typedef struct {
  46         int     decrypt;
  47         int     Nr;             /* key-length-dependent number of rounds */
  48         u32     ek[4*(AES_MAXROUNDS + 1)];      /* encrypt key schedule */
  49         u32     dk[4*(AES_MAXROUNDS + 1)];      /* decrypt key schedule */
  50 } rijndael_ctx;
  51
  52 void     rijndael_set_key(rijndael_ctx *, u_char *, int, int);
  53 void     rijndael_decrypt(rijndael_ctx *, u_char *, u_char *);
  54 void     rijndael_encrypt(rijndael_ctx *, u_char *, u_char *);
  55
  56 #endif /* _PRIVATE_RIJNDAEL_H */