基于指纹密钥的文件加／解密系统的实现

File Encryption System Based on Fingerprint

为保证硬盘内的信息在失去账户登录层面的保护后的安全，提出了一种新的以指纹信息为密钥的加密算法，该算法的加密和解密运算过程大量使用32位操作，计算机资源占用少、速度快、人机界面良好。为了增强效果，使用了可变长密钥；为方便用户使用，系统实现部分还提供了多种标准加密方法。

In order to guarantee the security of information in the hard disk, even if the user＇s logon protection is lost, this system proposes a new encryption algorithm taking fingerprint information as key. This encryption algorithm uses 32-bits operation, so it occupies small computer resource, runs fast, and has good man-machine interface. The variable-length key is used to strengthen the processing effect, and some other standard encryption algorithms are use for the convenience of the user.