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1 /* $OpenBSD: rijndael.h,v 1.15 2021/09/28 11:14:50 dtucker Exp $ */
6 * @version 3.0 (December 2000)
8 * Optimised ANSI C code for the Rijndael cipher (now AES)
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>
14 * This code is hereby placed in the public domain.
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.
28 #ifndef _PRIVATE_RIJNDAEL_H
29 #define _PRIVATE_RIJNDAEL_H
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
36 typedef unsigned char u8
;
37 typedef unsigned short u16
;
38 typedef unsigned int u32
;
40 int rijndaelKeySetupEnc(unsigned int [], const unsigned char [], int);
41 void rijndaelEncrypt(const unsigned int [], int, const u8
[16], u8
[16]);
43 /* The structure for key information */
46 int Nr
; /* key-length-dependent number of rounds */
47 u32 ek
[4*(AES_MAXROUNDS
+ 1)]; /* encrypt key schedule */
48 u32 dk
[4*(AES_MAXROUNDS
+ 1)]; /* decrypt key schedule */
51 void rijndael_set_key(rijndael_ctx
*, u_char
*, int, int);
52 void rijndael_decrypt(rijndael_ctx
*, u_char
*, u_char
*);
53 void rijndael_encrypt(rijndael_ctx
*, u_char
*, u_char
*);
55 #endif /* _PRIVATE_RIJNDAEL_H */