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Add Rijndael (128-bit blocksize) in the software crypto driver.

Hacking at OpenBSD Crypto 2000 :-)

/*
 * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
 *
 * This code was written by Angelos D. Keromytis in Athens, Greece, in
 * February 2000. Network Security Technologies Inc. (NSTI) kindly
 * supported the development of this code.
 *
 * Copyright (c) 2000 Angelos D. Keromytis
 *
 * Permission to use, copy, and modify this software without fee
 * is hereby granted, provided that this entire notice is included in
 * all source code copies of any software which is or includes a copy or
 * modification of this software. 
 *
 * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
 * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
 * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
 * PURPOSE.
 */

#ifndef _CRYPTO_XFORM_H_
#define _CRYPTO_XFORM_H_

#include <sys/md5k.h>
#include <crypto/sha1.h>
#include <crypto/rmd160.h>

/* Declarations */
struct auth_hash
{
    int type;
    char *name;
    u_int16_t keysize;
    u_int16_t hashsize; 
    u_int16_t authsize;
    u_int16_t ctxsize;
    void (*Init) (void *);
    int  (*Update) (void *, u_int8_t *, u_int16_t);
    void (*Final) (u_int8_t *, void *);
};

struct enc_xform
{
    int type;
    char *name;
    u_int16_t blocksize;
    u_int16_t minkey, maxkey;
    u_int32_t ivmask;           /* Or all possible modes, zero iv = 1 */ 
    void (*encrypt) (caddr_t, u_int8_t *);
    void (*decrypt) (caddr_t, u_int8_t *);
    void (*setkey) (u_int8_t **, u_int8_t *, int len);
    void (*zerokey) (u_int8_t **);
};

union authctx {
    MD5_CTX md5ctx;
    SHA1_CTX sha1ctx;
    RMD160_CTX rmd160ctx;
};

extern struct enc_xform enc_xform_des;
extern struct enc_xform enc_xform_3des;
extern struct enc_xform enc_xform_blf;
extern struct enc_xform enc_xform_cast5;
extern struct enc_xform enc_xform_skipjack;
extern struct enc_xform enc_xform_rijndael128;

extern struct auth_hash auth_hash_key_md5;
extern struct auth_hash auth_hash_key_sha1;
extern struct auth_hash auth_hash_hmac_md5_96;
extern struct auth_hash auth_hash_hmac_sha1_96;
extern struct auth_hash auth_hash_hmac_ripemd_160_96;
#endif /* _CRYPTO_XFORM_H_ */