在磁盘过滤驱动与USB设备驱动之间加载过滤驱动MyFiter，从而实现透明加解密。-USB disk filter driver and load the filter driver between the device driver MyFiter, in order to achieve transparent encryption and decryption.

USB过滤驱动 挂在在U盘CLASS注册表下实现u盘只读功能-USB filter driver disk hang CLASS registry in the U disk read-only functions to achieve u