Cryptdisk encryption on the fly creates a virtual disk on your system (cryptdisk). Cryptdisk is turned off and on as you need it. Entry into the virtual disk is only achieved by use of a file (Keyfile) and a highly secure passphrase process. All files, data, and information written in the cryptdisk or parked in the cryptdisk is encrypted automatically. All files you move out of the virtual cryptdisk are decrypted automatically.
Features:
Pseudo bitstream encryption generated from 64K-Bit- key
Encryption standard (AES) algorithm with a 256 Bit encryption key
Encoding and decoding "on-the-fly"
Size of CryptDisk is limited on hard disk only
up to 10 CryptDisks per physical drive are possible
USB token as unique key
Two way authentication (possession and knowledge)
Automatic control with USB token to mount and unmount a CryptDisk
Create and use CryptDisks on other computers or servers
Master/Slave keys to access the same CryptDisk
USB token key management

The license of this software is Free Trial Software, the price is $19.95, you can free download and get a free trial.