[14422] in Cypherpunks
Re: Compress before encrypting? (Was Re: NSA Helped Yeltsin...)
daemon@ATHENA.MIT.EDU (Jay Prime Positive)
Mon May 30 12:14:58 1994
Date: Mon, 30 May 94 08:05 PDT
From: jpp@jpplap.markv.com (Jay Prime Positive)
To: cypherpunks@toad.com
In-Reply-To: <9405301653.aa25522@salmon.maths.tcd.ie> (message from Alastair McKinstry on Mon, 30 May 1994 16:53:32 +0200)
Date: Mon, 30 May 1994 16:53:32 +0200
From: Alastair McKinstry <amck@maths.tcd.ie>
[...]
While this is true, don't forget the usefulness of known plaintext
for brute-force analyses. If you're doing a brute-force search
[...]
Costs: <$20 million (see Schneier) and this then makes breaking DES
keys (for example) trivial, if they all have the plain text.
[I presume Alastair ment to say] ...the same known plain text.
[...]
Ah yes. Well, the state of the art in cryptanalysis (as far as I
know) just moved forward a notch. =)
j'
