/* $OpenBSD: rijndael.h,v 1.12 2007/05/27 05:43:17 tedu 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 __RIJNDAEL_H #define __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; /* The structure for key information */ typedef struct { int enc_only; /* context contains only encrypt schedule */ 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; int rijndael_set_key(rijndael_ctx *, u_char *, int); int rijndael_set_key_enc_only(rijndael_ctx *, u_char *, int); void rijndael_decrypt(rijndael_ctx *, u_char *, u_char *); void rijndael_encrypt(rijndael_ctx *, u_char *, u_char *); int rijndaelKeySetupEnc(unsigned int [], const unsigned char [], int); int rijndaelKeySetupDec(unsigned int [], const unsigned char [], int); void rijndaelEncrypt(const unsigned int [], int, const unsigned char [], unsigned char []); #endif /* __RIJNDAEL_H */