Decoded message was: Re: Article on PGP uses Gnupg :)

David Shaw
Wed Jan 15 15:02:02 2003

On Wed, Jan 15, 2003 at 12:16:23PM +0200, Charly Avital wrote:
> Let's assume that both messges, before and after encryption, are real,
> meaning that the cyphertext  is the result of the plaintext encrypted to
> that key.
> Let's also assume that both pict files can be scanned and OCR'd into real
> data material, would it be possible then to retrieve the secret key (and
> passphrase)?

That is known as a known-plaintext attack.  All algorithms used in
OpenPGP are resistant to such attacks.


   David Shaw  |  |  WWW
   "There are two major products that come out of Berkeley: LSD and UNIX.
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