uSteg will hide messages and files in an image in such a way that no one, apart from the sender and intended recipient, suspects the existence of the message, a form of security through obscurity.
The advantage of uSteg, over cryptography alone, is that messages do not attract attention to themselves. Plainly visible encrypted messages—no matter how unbreakable—will arouse suspicion, and may in themselves be incriminating in countries where encryption is illegal. Therefore, whereas cryptography protects the contents of a message, uSteg can be said to protect both messages and communicating parties.
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