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Re: standard for stegonography?
On Sun, 27 Feb 1994, Matt Thomlinson wrote:
> I think these two have a lot to do with each other. Sergeys' suggestion
> would definitely make it a tougher to pick out a starting place to
> search for hidden text. However, the message (if it is ever found in the
> file) points to the intended recipient. This defeats the purpose of
> "stealth pgp", (which would probably be used in this case to strip off
> telltale headers and such).
>
The hidden message need may be a stripped PGP encrypted file. It need not
specify who its addressed to! The intended recipient will be able to
retrieve the file regardless. His program should automatically revive
the file starting from _his_ public-key checksum-value offset (which both
the sender and the reciever already know, without the need for any
telltale headers in the file). Even if the opponent tries all possible
offsets and filelengths he/she will always get noise, never anything
pointing to the reciever.
> If you weren't worried about this type of deniability, though, I don't
> see a problem with it.
>
It wasn't me! ;)
> mt
>
> Matt Thomlinson Say no to the Wiretap Chip!
> University of Washington, Seattle, Washington.
> Internet: [email protected] phone: (206) 548-9804
> PGP 2.2 key available via email or finger [email protected]
>
Sergey