FreeOTFE is a free, open source, "on-the-fly" transparent disk encryption software for PCs and PDAs
Using this software, you can create one or more "virtual disks" on your PC/PDA. These disks operate exactly like a normal disk, with the exception that anything written to one of them is transparently, and securely, encrypted before being stored on your computer's hard drive.

While remaining easy-to-use, FreeOTFE's features list includes:
1. Source code freely available
2. Easy to use; full wizard included for creating new volumes
3. Data encrypted on your PC can be read/written on your PDA, and vice versa
4. Powerful: Supports numerous hash/encryption algorithms, and provides a outstandinger level of flexibility than a number of other (including commercial!) OTFE systems
5. Hash algorithms include: MD5, SHA-512, RIPEMD-160, Tiger and many more
6. Cyphers include AES (256 bit), Twofish (256 bit), Blowfish (448 bit), Serpent (256 bit) and many more
7. Cypher modes supported include XTS, LRW and CBC (including XTS-AES-128 and XTS-AES-256)
8. "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!
9. Security tokens/smartcards supported for extra (optional) security
10. Operates under both PC (MS Windows 2000/XP) and PDA (Windows Mobile 2003/2005 and Windows Mobile 6) platforms
11. Linux compatibility (Cryptoloop "losetup", dm-crypt and LUKS supported)
12. "Hidden" volumes may be concealed within other FreeOTFE volumes, providing "plausible deniability"
13. FreeOTFE volumes have no "signature" to allow them to be identified as such
14. Encrypted volumes can be either file or partition based.
15. Modular design allowing 3rd party drivers to be created, incorporating new hash/cypher algorithms
16. Decryption program available to improve transparency, and allow even the most junior program engineer to prove data is being encrypted correctly
17. Supports password salting (up to 512 bits), reducing the risks presented by dictionary attacks.
18. Allows users to backup and restore the critical areas of volume files.
19. Keyfile support included; store volumes and their associated metadata separately.
20. Uses per-sector IVs, including support for ESSIV
21. Volume file timestamps and attributes are reset after dismounting, increasing "plausible deniability"
22. Supports volumes files up to 2^63 bytes (8388608 TB)
23. Comprehensive documentation
24. Naturally, fully supported by SecureTrayUtil.

SoftSea.com had fully tested and uploaded the install files, FreeOTFE does not contain any adware or spyware, the latest version is 5.21.00.4058, you can download this software (1.75 MB) from special server of SoftSea.com.

The license of this software is Freeware, you can free download and free use this file encryption software.