TrueCrypt

By using TrueCrypt, an open source and free encryption program, you can create encrypted virtual drives and secure your information. TrueCrypt creates and stores the information you have copied with encrypted drivers in a file. You can also safely carry your information on removable USB memory products. It is very easy to copy the encrypted file to another hard disk or source and assign it to the drive.TrueCrypt provides security by asking you the password you specify whenever you want to open the file.AES-256 uses Blowfish, CAST5, Serpent, Triple DES and Twofish encryption techniques and virtual drives in FAT32 or NTFS format It still has features such as creating a hidden drive and assigning the file to the drive with keyboard shortcuts.