FreeOTFE is a free, open source, "on-the-fly" (OTFE) transparent disk encryption program.

Using this software, you can create one or more "virtual disks" on your PC - anything written to which will be automatically, and securely, encrypted before being stored.

Features include:
-Source code freely available.
-Easy to use; full wizard included for creating new volumes.
-Data encrypted on your PC can be read/written on your PDA, and vice versa.
-Powerful: Supports numerous hash/encryption algorithms, and provides a greater level of flexibility than a number of other (including commercial!) OTFE systems.
-Hash algorithms include: MD5, SHA512,
-RIPEMD160,
-Tiger and many more.
-Cyphers include AES (256 bit), Twofish (256 bit), Blowfish (448 bit), Serpent (256 bit) and many more. "
-Portable mode" included; FreeOTFE doesn't need to be installed before it can be used
-making it ideal for carrying your data securely on USB drives!
-Operates under both PC (MS Windows 2000/XP) and PDA (Windows Mobile 2003/2005) platforms.
-Linux compatibility (Cryptoloop "losetup", dm
-crypt and LUKS supported). "
-Hidden" volumes may be concealed within other FreeOTFE volumes, providing "plausible deniability".
-FreeOTFE volumes have no "signature" to allow them to be identified as such.
-Encrypted volumes can be either file or partition based.
-Modular design allowing 3rd party drivers to be created, incorporating new hash/cypher algorithms.
-Supports password salting (up to 512 bits), reducing the risks presented by dictionary attacks.
-Allows users to backup and restore the critical areas of volume files.
-Keyfile support included; store volumes and their associated metadata separately.
-Uses per
-sector IVs, including support for ESSIV.
-Volume file timestamps and attributes are reset after dismounting, increasing "plausible deniability".
-Supports volumes files up to 2^63 bytes (8388608 TB).
-Plus more...!

FreeOTFE keywords: freeotfe, transparent, disk encryption, open source, virtual, secure