Free Open Source USB Encryption Software Utility: TrueCrypt
TrueCrypt has just what you are looking for, provided you are looking for free USB flash drive encryption software utilities.
The best feature of TrueCrypt is the automatic, on-the-fly, real-time encryption process. So it’s completely transparent.
The other great feature is the Plausible Deniability feature which provides two levels for you.
- Level 1: Hidden volumes. This is where a volume is created within another volume by TrueCrypt. The upper level (the one seen by a person forcing you to get the content) is filled with random data, so you can show them “Look man, there’s nothing there!”
- Level 2: A volume appears to consist of nothing more than random data, no signature or typology what-so-ever. Therefore, it is impossible to prove that a file, a partition or a device has been encrypted.
To round out the offerings of this free USB encryption software, TrueCrypt includes a key-log which records the time and date the last time modifications were made. Such as password changes, data access or more concerning information such as last time the device was mounted in an OS, or attempted to be mounted.
The only down side, which I feel isn’t a big deal at all is that TrueCrypt does not support partitions for USB flash drives.
This is very powerful stuff and best of all it’s free. If you are looking to get started on encrypting, jump to the TrueCrypt tutorial.