alg.h

加密解密,安全工具！很有意思的代码

/*******************************************************************
 *	Copyright (c) 1994-1999 Jetico, Inc., Finland
 *	All rights reserved.
 *
 *	File: alg.h
 *	Created:
 *	Revision: $Id: alg.h,v 1.1 2005/05/12 09:51:39 crypt Rel-1.6-3 $
 *
 *	Description: IOCTL wrappers for BestCrypt Driver.
 *
 *******************************************************************/


#ifndef __ALG_H__
#define __ALG_H__

#include <bc_ioctl.h>

#ifdef CPLUSPLUS
extern "C" {
#endif

/* all these functions return 0 upon success ERROR_CODE otherwise */

extern int alg_verify	(ALG_SERV Alg);

extern int alg_make_key	(ALG_SERV Alg,
			BYTE	*key, 
			DWORD	key_len, /* bits */
			BYTE	*pool,
			KEY_HANDLE *key_handle);

extern int alg_free_key	(ALG_SERV Alg,
			KEY_HANDLE key_handle);
								
extern int alg_encrypt	(ALG_SERV Alg,
			KEY_HANDLE key_handle,
			BYTE	*iv,
			BYTE	*buffer,
			DWORD	buffer_len);
				
extern int alg_decrypt	(ALG_SERV Alg,
			KEY_HANDLE key_handle,
			BYTE	*iv,
			BYTE	*buffer,
			DWORD buffer_len);
/*
extern int bc_set_fd64	(ALG_SERV Alg,
			BYTE	*key, 
			DWORD	key_len, // bits 
			BYTE	*pool,
			int fd,
			unsigned long long offset,
			unsigned int flags);
				
extern int bc_set_fdkh64(ALG_SERV Alg,
			KEY_HANDLE key_handle,
			int fd,
			unsigned long long offset,
			unsigned long long start_sector,
			unsigned long long num_sectors,
			unsigned int flags);

extern int bc_clear_fd	(ALG_SERV Alg);

// bc_get_info returns 0 if device is free, 1 otherwise 
extern int bc_get_info	(ALG_SERV Alg, int *ver_major, int *ver_minor);

// bc_(un)lock_dev returns 0 upon success error code if error occured 
// bc_(un)lock_dev is protected safely from multiple calls 
extern int bc_lock_dev	(ALG_SERV Alg);
extern int bc_unlock_dev(ALG_SERV Alg);

// process' pid will be removed from driver's table if (drop_pid != 0) 
extern int bc_get_priv(ALG_SERV Alg, unsigned long drop_pid);

// flush device's mount refcount to enable alarm umount 
extern int bc_force_unlock(ALG_SERV Alg);

// check if disk activity has been detected since last same call
extern int bc_check_activity(ALG_SERV Alg, long *result);
*/
#ifdef CPLUSPLUS
}
#endif
#endif /* __ALG_H__ */