To decrypt the file, you'll need to reverse the process. Point it at the encrypted file and click the Decrypt button. It's a basic process that could benefit from a small frill or two, such as remembering the original filename and auto-filling that name when you want to decrypt a file (you have to provide a name for the decrypted file). But the utility doesn't even require installation--just double-click the .exe file--and it can easily run from a USB drive.
Omziff can use Blowfish, Cast128, Gost, IDEA, and Misty1 encryption, along with Rijndael and Twofish.
Omziff performs a few other file tasks, such as digitally shredding a file or splitting it into smaller pieces that can later be reassembled. It can also generate passwords or create file hashes, which are typically used to verify that a file hasn't been tampered with.
If you want a simple, portable encryption tool for single files, Omziff could cover your needs. If you want a more feature-rich encryption program that can encrypt files saved into particular folders on-the-fly, for instance, try the also-free TrueCrypt.
--Erik Larkin
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