FreeBSD/Linux Kernel Cross Reference
sys/crypto/rijndael/rijndael-api-fst.h

     /*      $NetBSD: rijndael-api-fst.h,v 1.7 2005/12/11 12:20:52 christos Exp $    */
     
     /**
      * rijndael-api-fst.h
      *
      * @version 2.9 (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.
     *
     * Acknowledgements:
     *
     * We are deeply indebted to the following people for their bug reports,
     * fixes, and improvement suggestions to this implementation. Though we
     * tried to list all contributions, we apologise in advance for any
     * missing reference.
     *
     * Andrew Bales <Andrew.Bales@Honeywell.com>
     * Markus Friedl <markus.friedl@informatik.uni-erlangen.de>
     * John Skodon <skodonj@webquill.com>
     */
    
    #ifndef __RIJNDAEL_API_FST_H
    #define __RIJNDAEL_API_FST_H
    
    #include "rijndael-alg-fst.h"
    
    /*  Generic Defines  */
    #define     DIR_ENCRYPT           0 /*  Are we encrpyting?  */
    #define     DIR_DECRYPT           1 /*  Are we decrpyting?  */
    #define     MODE_ECB              1 /*  Are we ciphering in ECB mode?   */
    #define     MODE_CBC              2 /*  Are we ciphering in CBC mode?   */
    #define     MODE_CFB1             3 /*  Are we ciphering in 1-bit CFB mode? */
    #define     TRUE                  1
    #define     FALSE                 0
    #define     BITSPERBLOCK        128 /* Default number of bits in a cipher block */
    
    /*  Error Codes  */
    #define     BAD_KEY_DIR          -1 /*  Key direction is invalid, e.g., unknown value */
    #define     BAD_KEY_MAT          -2 /*  Key material not of correct length */
    #define     BAD_KEY_INSTANCE     -3 /*  Key passed is not valid */
    #define     BAD_CIPHER_MODE      -4 /*  Params struct passed to cipherInit invalid */
    #define     BAD_CIPHER_STATE     -5 /*  Cipher in wrong state (e.g., not initialized) */
    #define     BAD_BLOCK_LENGTH     -6
    #define     BAD_CIPHER_INSTANCE  -7
    #define     BAD_DATA             -8 /*  Data contents are invalid, e.g., invalid padding */
    #define     BAD_OTHER            -9 /*  Unknown error */
    
    /*  Algorithm-specific Defines  */
    #define     RIJNDAEL_MAX_KEY_SIZE         64 /* # of ASCII char's needed to represent a key */
    #define     RIJNDAEL_MAX_IV_SIZE          16 /* # bytes needed to represent an IV  */
    
    /*  Typedefs  */
    
    typedef unsigned char   BYTE;
    
    /*  The structure for key information */
    typedef struct {
        BYTE  direction;                /* Key used for encrypting or decrypting? */
        int   keyLen;                   /* Length of the key  */
        char  keyMaterial[RIJNDAEL_MAX_KEY_SIZE+1];  /* Raw key data in ASCII, e.g., user input or KAT values */
            int   Nr;                       /* key-length-dependent number of rounds */
            u_int32_t   rk[4*(RIJNDAEL_MAXNR + 1)];        /* key schedule */
            u_int32_t   ek[4*(RIJNDAEL_MAXNR + 1)];        /* CFB1 key schedule (encryption only) */
    } keyInstance;
    
    /*  The structure for cipher information */
    typedef struct {                    /* changed order of the components */
        u_int32_t  IV[RIJNDAEL_MAX_IV_SIZE / sizeof(u_int32_t)];
                            /* A possible Initialization Vector for ciphering */
        BYTE  mode;                     /* MODE_ECB, MODE_CBC, or MODE_CFB1 */
    } cipherInstance;
    
    /*  Function prototypes  */
    
    int rijndael_makeKey(keyInstance *, BYTE, int, char *);
    
    int rijndael_cipherInit(cipherInstance *, BYTE, char *);
    
    int rijndael_blockEncrypt(cipherInstance *, keyInstance *, BYTE *, int, BYTE *);
    
    int rijndael_padEncrypt(cipherInstance *, keyInstance *, BYTE *, int, BYTE *);
   
   int rijndael_blockDecrypt(cipherInstance *, keyInstance *, BYTE *, int, BYTE *);
   
   int rijndael_padDecrypt(cipherInstance *, keyInstance *, BYTE *, int, BYTE *);
   
   #endif /* __RIJNDAEL_API_FST_H */

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