基于DBR的磁盘文件快速加密安全保障机制研究

摘要

In order to satisfy the security requirements of most of common users' private data,a rapid file encryption mechanism is proposed based on DBR. The modified files could not read, copy, delete, modify, and the mechanism use DBR to locate the file sector and modify the file pointer address in DBR. Even if the disk or files were lost, common users could not get the contents. By rapidly encrypting FAR and NTFS two formats fdisk in Windows, the alogrithm could both be commonly used and not be decrypted by common users,so that the purpose of rapid encryption and safeguard the fdisk files was carried out.%为了满足大多数普通用户私人存储数据安全的需求,提出一种基于DOS引导扇区(DBR)的文件快速加密安全保障机制.该机制利用DBR定位文件扇区,并对DBR中的文件指针地址信息进行修改,修改后的文件无法利用常规方法进行查看、拷贝、删除和修改等操作,即使磁盘或文件丢失用户也无法获得其中内容.通过对目前Windows操作系统下FAT和NTFS两种文件格式的磁盘进行快速加密,给出的加密算法既通用又能使普通用户无法破解,从而达到了快速加密以及保障磁盘文件安全的目的.