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 */ 57