1 /* $KAME: rijndael.h,v 1.6 2003/08/28 08:36:32 itojun 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 29 #ifndef __RIJNDAEL_H 30 #define __RIJNDAEL_H 31 32 #define RIJNDAEL_MAXKC (256/32) 33 #define RIJNDAEL_MAXKB (256/8) 34 #define RIJNDAEL_MAXNR 14 35 36 typedef struct { 37 int decrypt; 38 int Nr; /* key-length-dependent number of rounds */ 39 uint32_t ek[4 * (RIJNDAEL_MAXNR + 1)]; /* encrypt key schedule */ 40 uint32_t dk[4 * (RIJNDAEL_MAXNR + 1)]; /* decrypt key schedule */ 41 } rijndael_ctx; 42 43 void rijndael_set_key(rijndael_ctx *, const u_char *, int); 44 void rijndael_decrypt(const rijndael_ctx *, const u_char *, u_char *); 45 void rijndael_encrypt(const rijndael_ctx *, const u_char *, u_char *); 46 47 int rijndaelKeySetupEnc(uint32_t [/*4*(Nr+1)*/], const uint8_t [], int); 48 int rijndaelKeySetupDec(uint32_t [/*4*(Nr+1)*/], const uint8_t [], int); 49 void rijndaelEncrypt(const uint32_t [/*4*(Nr+1)*/], int, 50 const uint8_t[16], uint8_t [16]); 51 void rijndaelDecrypt(const uint32_t [/*4*(Nr+1)*/], int, 52 const uint8_t [16], uint8_t [16]); 53 54 #endif /* __RIJNDAEL_H */ 55