Protect Your Private Data. UkeySoft File Lock is a military grade files encryption tool, which is designed to password-lock and hiding files, folders and drives; encrypt your important file to protect them. As a professional data security tool, it provides four amazing features to protect confidentiality and integrity of your private data with strong 256-bit algorithm. Features Password protect any files, folders on local disk or USB flash drives, memory card or CDs. Password protect a drives and a folder, so all new files added become password protected also. Hide your private files/folders from local disk or external (USB) disk, no one else knows hidden files, except you. Nobody can modify, delete, or rename the protect files/folders without password.