Password Protect Your USB Flash Drives. USB Flash Drive are designed to be small in terms of size for files sharing/storing, carrying around and backup, but it easy to be infected by a virus, misplace and even get stolen. So, it is necessary to create a password to protect your USB flash drives by UkeySoft USB Encryption. Features Password protect USB drives or any other types of external storage devices. Convert a regular area into a secure area on USB flash drive. Uses the NIST-approved AES encryption algorithm and 256-bit encryption key length.