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/* $OpenBSD: rijndael.h,v 1.15 2021/09/28 11:14:50 dtucker 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 _PRIVATE_RIJNDAEL_H
#define _PRIVATE_RIJNDAEL_H
#define AES_MAXKEYBITS (256)
#define AES_MAXKEYBYTES (AES_MAXKEYBITS/8)
/* for 256-bit keys, fewer for less */
#define AES_MAXROUNDS 14
typedef unsigned char u8;
typedef unsigned short u16;
typedef unsigned int u32;
int rijndaelKeySetupEnc(unsigned int [], const unsigned char [], int);
void rijndaelEncrypt(const unsigned int [], int, const u8 [16], u8 [16]);
/* The structure for key information */
typedef struct {
int decrypt;
int Nr; /* key-length-dependent number of rounds */
u32 ek[4*(AES_MAXROUNDS + 1)]; /* encrypt key schedule */
u32 dk[4*(AES_MAXROUNDS + 1)]; /* decrypt key schedule */
} rijndael_ctx;
void rijndael_set_key(rijndael_ctx *, u_char *, int, int);
void rijndael_decrypt(rijndael_ctx *, u_char *, u_char *);
void rijndael_encrypt(rijndael_ctx *, u_char *, u_char *);
#endif /* _PRIVATE_RIJNDAEL_H */
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