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steganography detection hazard?
- To: [email protected]
- Subject: steganography detection hazard?
- From: Anonymous <[email protected]>
- Date: Sun, 13 Dec 1998 22:07:30 +0100
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- Sender: [email protected]
Suppose you take your plaintext, encrypt it,
then spread the bits across an image as the LSBs.
The LSBs will, if you've used a decent cipher,
have perfectly uniform distribution.
The 'noise' LSBs in a chunk of *digitized* bits will show
a *uniform* distribution. (As indeed will the cipher's blocks,
or any bitchunk larger or smaller.)
Therefore an entropy test (see Maurer) will discriminate
between the two.
Please prove me wrong.