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/* $OpenBSD: tcfs_cipher.h,v 1.4 2000/06/18 16:23:08 provos Exp $ */
/*
* Copyright 2000 The TCFS Project at http://tcfs.dia.unisa.it/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the authors may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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 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 _TCFS_CIPHER_H_
#define _TCFS_CIPHER_H_
#include <miscfs/tcfs/tcfs_mount.h>
#define _TCFS_CIPHER_H_
#define MaxNumOfCipher 8
#define MaxCipherNameLen 8
struct tcfs_cipher {
char cipher_desc[MaxCipherNameLen];
int cipher_version;
int cipher_keysize;
void *(*init_key)(char*);
void (*cleanup_key)(void*);
void (*encrypt)(char*, int, void*);
void (*decrypt)(char*, int, void*);
};
extern struct tcfs_cipher tcfs_cipher_vect[MaxNumOfCipher];
#define TCFS_MP_CIPHER(mp) (((struct tcfs_mount*)(mp))->tcfs_cipher_num)
#define TCFS_CIPHER_KEYSIZE(mp)\
(tcfs_cipher_vect[TCFS_MP_CIPHER((mp))].cipher_keysize)
#define TCFS_CIPHER_VERSION(mp)\
(tcfs_cipher_vect[TCFS_MP_CIPHER((mp))].cipher_version)
#define TCFS_CIPHER_DESC(mp)\
(tcfs_cipher_vect[TCFS_MP_CIPHER((mp))].cipher_desc)
static __inline void *TCFS_INIT_KEY(struct tcfs_mount *,char *);
static __inline void *TCFS_INIT_KEY(struct tcfs_mount *mp, char *tok)
{
return (tcfs_cipher_vect[TCFS_MP_CIPHER((mp))].init_key((tok)));
}
static __inline void TCFS_CLEANUP_KEY(struct tcfs_mount*,void*);
static __inline void TCFS_CLEANUP_KEY(struct tcfs_mount* mp,void* tok)
{
(tcfs_cipher_vect[TCFS_MP_CIPHER((mp))].cleanup_key((tok)));
return;
}
static __inline void TCFS_ENCRYPT(struct tcfs_mount*,char*,int,void*);
static __inline void TCFS_ENCRYPT(struct tcfs_mount *mp,char *blk,int len,void *key)
{
(tcfs_cipher_vect[TCFS_MP_CIPHER((mp))].encrypt((blk),(len),(key)));
return;
}
static __inline void TCFS_DECRYPT(struct tcfs_mount*,char*,int,void*);
static __inline void TCFS_DECRYPT(struct tcfs_mount *mp,char *blk,int len,void *key)
{
(tcfs_cipher_vect[TCFS_MP_CIPHER((mp))].decrypt((blk),(len),(key)));
return;
}
void mkencrypt (struct tcfs_mount *, char *, int, void*);
void mkdecrypt (struct tcfs_mount *, char *, int, void*);
/* function prototypes */
void *cnone_init_key(char *);
void cnone_cleanup_key(void*);
void cnone_encrypt(char *, int , void*);
void cnone_decrypt(char *, int , void*);
#define NONE_KEYSIZE 0
void *TDES_init_key(char *);
void TDES_cleanup_key(void*);
void TDES_encrypt(char *, int , void*);
void TDES_decrypt(char *, int , void*);
#define TDES_KEYSIZE 24
void *BLOWFISH_init_key(char *);
void BLOWFISH_cleanup_key(void*);
void BLOWFISH_encrypt(char *, int , void*);
void BLOWFISH_decrypt(char *, int , void*);
#define BLOWFISH_KEYSIZE 32
#endif /* _TCFS_CIPHER_H_ */
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