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