TrueCrypt 7.2

TrueCrypt is a free program that is designed to reliably protect any information by creating virtual encrypted disks in real time (on the fly). You can create encrypted disks both inside a file and mount it as a regular disk. It should also be noted that it is possible to encrypt the entire partition or disk device, such as a Flash drive, floppy disk and other removable media.
Various encryption algorithms are supported (AES (256-bit key), Blowfish (448-bit key), CAST5 (128-bit key), Serpent (256-bit key), Triple DES, Twofish (256-bit key), etc.), as well as cascading encryption with various ciphers.