bc_ioctl.h

BestCrypt开源加密原代码

/*******************************************************************
 *	Copyright (c) 1994-1998 Jetico, Inc., Finland
 *	All rights reserved.
 *
 *	File:		include/bc_ioctl.h
 *
 *	Description:	ioctl() interface to BestCrypt driver 
 *
 *	Scope:		BestCrypt driver, driver calls wrapper
 *
 *	Platforms:	Linux
 * 
 *	Author:		Nail R. Kaipov
 *
 *	Created:	10-Nov-1998
 *
 *	Revision:	 $Id: bc_ioctl.h,v 1.9 2004/12/16 08:42:35 nail Rel-1.6-5 $
 *
 *******************************************************************/

#ifndef __BC_IOCTL__
#define __BC_IOCTL__

/* MAX key length in bits */
#define MAX_KEY_LENGTH		512
/* pool of random bytes */
#define POOL_SIZE_BYTES		512
/* MAX module name length in bytes. limited by kerneld */
#define MOD_NAME_LEN		64
/* MAX block size for BC_(DE)ENCRYPT_BLOCK in bytes */
#define MAX_BLOCK_SIZE		4096

#define BC_MAGIC		0x0000BCBC

typedef struct ALG_SERV_ {
        int     bc_fd;
	ALG_ID	alg_id;
        char    *alg_module;
} ALG_SERV;
				

/* IOCTL commands  */
#define BC_GET_INFO		0xBC00

struct bc_info {
	int	magic;			/* magic number protection */
	int	error;			/* return error code       */
	int	ver_major;		/* major version number    */
	int	ver_minor;		/* minor version number    */
	int	busy;			/* is device busy	   */
};

#define BC_SET_FD		0xBC01
#define BC_CLR_FD		0xBC02

#define BC_LOCK_DEV		0xBC03
#define BC_UNLOCK_DEV		0xBC04

#define BC_CHECK_FD		0xBC05
#define BC_NOTIFY_PID		0xBC06
#define BC_GET_PRIV		0xBC07

#define BC_FORCE_UNLOCK		0xBC09
#define BC_CHECK_ACTIVITY	0xBC0A

/* BC driver user flags definition */
#define BC_FLAGS_READONLY	0x00000001
#define BC_FLAGS_MULTPART	0x00000002
#define	BC_FLAGS_IV_64BIT	0x00000004

struct bc_file64 {
	int	magic;			/* magic number protection         */
	int	error;			/* return error code               */
	int	fd;			/* container's file descriptor     */
	unsigned long long offset;	/* data offset. ALIGNED by 8 bytes */
	unsigned long long start_sector;/* starting sector for actual data */
	unsigned long long num_sectors;	/* actual data size                */
	unsigned int	flags;		/* binding flags                   */
	ALG_ID		alg_id;		/* encryption algorithm id         */
	KEY_HANDLE	key_handle;	/* key handle (invisible to user?) */
};

#define BC_CONTAINER_UNUSED	0
#define BC_CONTAINER_USED	1
#define BC_CONTAINER_MOUNTED	2

struct bc_check {
	int	magic;			/* magic number protection         */
	int	error;			/* return error code               */
	int	fd;			/* container's file descriptor     */
	int	busy;			/* BC_CONTAINER_* flags (return)   */
};

#define BC_PID_EXCLUDE		0
#define BC_PID_INCLUDE		1

struct bc_pid {
	int	magic;			/* magic number protection */
	int	error;			/* return error code       */
	int	pid;			/* pid to notify	   */
	int	sig;			/* signal to send	   */
	int	op;			/* BC_PID_EXCLUDE/INCLUDE  */
};

#define BC_VERIFY_ALG		0xBC10

struct bc_alg {
	int	magic;			/* magic number protection  */
	int	error;			/* return error code        */
	ALG_ID	alg_id;			/* encryption algorithm id  */
	char	alg_module[MOD_NAME_LEN];	/* algorithm module name */
};

#define BC_MAKE_KEY		0xBC20
#define BC_TEST_KEY		0xBC21
#define BC_FREE_KEY		0xBC22

struct bc_key {
	int	magic;			/* magic number protection  */
	int	error;			/* return error code        */
	ALG_ID	alg_id;			/* encryption algorithm id  */
	char	alg_module[MOD_NAME_LEN];	/* algorithm module name */
	unsigned char	*key;		/* pointer to user password */
	unsigned int	key_len;	/* key length in ...        */
	unsigned char	*pool;		/* pointer to rnd data pool */	
	KEY_HANDLE	key_handle;	/* key handle               */
};

#define BC_ENCRYPT_BLOCK	0xBC30
#define BC_DECRYPT_BLOCK	0xBC31

struct bc_block {
	int	magic;			/* magic number protection */
	int	error;			/* return error code       */
	ALG_ID	alg_id;			/* encryption algorithm    */
	KEY_HANDLE	key_handle;	/* encryption key          */		
	unsigned char	iv[8];		/* initial vector          */
	unsigned char	*buffer;	/* block to be processed   */
	unsigned int	buffer_len;	/* block length. ALIGNED?? */
};


#endif /* __BC_IOCTL__ */