主要是U 盘加密的。可以对U盘 进行加密，是一个难得的例子-Files Descr iption: DD\EDDrv.c: The on-the-fly encryption/decryption filter driver. DD\EdDrv.h: Main header file for the above. DD\IoctlCmd.h: Containing the IOCTLs for the driver. DD\EdDrv.lib: The library fi