Couple of weeks ago, I tried to find free USB encryption tools with the following requirements:
- Encrypt the USB with AES-256 encryption algorithm
- Hide the USB partition, unless a correct password is entered. So for example, total size of USB disk is 8 GB, only a small KB is shown and we need to click the KB to see the total size
- Portable and no tools should be installed on the PC
- No admin privilege is required to run the program
After exploring many tools, like truecrypt, rohos, USB flash security, securstick, freeOTFE, I decided to go with FreeOTFE that really suits my needs. Also, I combined it with Bootice to initially format a USB drive.