edo wrote:
> One could declare such a simple trick to be "not stego."
Or, even, worthless, and beneath the contempt of the
serious student of cryptography.
That would be too harsh. The elegance of the idea is that it shows how little one needs to do to achieve some security from observation.
You're kind, but still missing some of the nuance. It's possible to encode these bits in a secure way that would be worthy of any student of cryptography.
I believe it's possible to encode bits in the order of things in a way that is JUST AS SECURE as the hash function being used.
The code below uses MD5, but it could use any hash function. If we assume the random oracle model, I think it's pretty obvious that one can't extract the message without finding a way to put a crack in the hash function.
http://www.wayner.org/books/discrypt2/sorted.php
The example only uses disco songs, but it applies to any list of things. Obviously rearranging the letters creates spelling mistakes, but I think there are plenty of lists of objects with no obvious ordering. That's why I chose disco songs.
-Peter
--------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
