Re: Steganography via Arithmetic Compression

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David Honig (honig@sprynet.com)
Mon, 31 Aug 1998 15:20:38 -0700


At 02:31 AM 8/31/98 -0000, Russell Nelson wrote:

>If the output of the stego algorithm is completely random bits, then
>how do you know that there's a message? Answer is, "you decode it."

Yes.

>But do you go around decoding every random sequence of bits that
>happens into your life? No, you have a standard place to look for
>messages. Well, if it's standard, then the attacker knows where to
>look as well. But if the attacker knows where to look, then your
>stego algorithm had better have perfectly random output.

I think its generally presumed that you have established, "out of band",
that you will occasionally
send stego messages. Since personal photos are commonly exchanged and are
reasonable
stegobit carriers, these are ideal.

David Honig

We will be obliged to take action ourselves -Gore on privacy

  


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The following archive was created by hippie-mail 7.98617-22 on Sat Apr 10 1999 - 01:13:58