Sentry 2020/XP 3.0 b17
"The first security system that protects volumes, files, folders and programs quickly and easily. You have every reason to be concerned about who has the access to the business data on your computer, and very much like having a vault on your hard drive, Sentry 2020 provides extremely strong security so no one but you can access your confidential information.
Sentry 2020 uses a key length of 128 or more bits, offering deep strong security for your data. Supported algorithms: Blowfish-448, CAST-128, MDC-1024, Square-128, Safer-128, DES-64(56), Triple DES-128(112).
Sentry 2020 is dramatically faster than other security packages, most algorithms implemented in machine language and because Sentry 2020, which operates at the volume level, has fewer operations to undergo for a given number of files than traditional file-based systems."