portable version of T r u e C r y p t , free disk encryption software for Windows 7/Vista/XP, Mac OS X, and Linux
Main Features:

* Creates a virtual encrypted disk within a file and mounts it as a real disk.

* Encrypts an entire partition or storage device such as USB flash drive or hard drive.

* Encrypts a partition or drive where Windows is installed (pre-boot authentication).

* Encryption is automatic, real-time (on-the-fly) and transparent.

* Parallelization and pipelining allow data to be read and written as fast as if the drive was not encrypted.

* Provides plausible deniability, in case an adversary forces you to reveal the password:

Hidden volume (steganography) and hidden operating system.

* Encryption algorithms: AES-256, Serpent, and Twofish. Mode of operation: XTS.

Further information regarding features of the software may be found in the documentation.

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