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Annotation of sys/crypto/rijndael.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: rijndael.h,v 1.12 2007/05/27 05:43:17 tedu 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 __RIJNDAEL_H
                     29: #define __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: /*  The structure for key information */
                     41: typedef struct {
                     42:        int     enc_only;               /* context contains only encrypt schedule */
                     43:        int     Nr;                     /* key-length-dependent number of rounds */
                     44:        u32     ek[4*(AES_MAXROUNDS + 1)];      /* encrypt key schedule */
                     45:        u32     dk[4*(AES_MAXROUNDS + 1)];      /* decrypt key schedule */
                     46: } rijndael_ctx;
                     47:
                     48: int     rijndael_set_key(rijndael_ctx *, u_char *, int);
                     49: int     rijndael_set_key_enc_only(rijndael_ctx *, u_char *, int);
                     50: void    rijndael_decrypt(rijndael_ctx *, u_char *, u_char *);
                     51: void    rijndael_encrypt(rijndael_ctx *, u_char *, u_char *);
                     52:
                     53: int    rijndaelKeySetupEnc(unsigned int [], const unsigned char [], int);
                     54: int    rijndaelKeySetupDec(unsigned int [], const unsigned char [], int);
                     55: void   rijndaelEncrypt(const unsigned int [], int, const unsigned char [],
                     56:            unsigned char []);
                     57:
                     58: #endif /* __RIJNDAEL_H */