Article View: sci.crypt
Article #2580Re: Real question re DES vs IDEA cipher
From: Carl Ellison
Date: Tue, 29 Dec 1992 00:13
Date: Tue, 29 Dec 1992 00:13
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In article <BzsH0G.9yz@chinet.chi.il.us> schneier@chinet.chi.il.us (Bruce Schneier) writes: > >I am more confident with triple-DES (112-bit key), but that takes a whole >lot longer than IDEA. I, too, am more confident with triple-DES -- but why call it only 112 bits? If each of the 3 DES stages does its own CBC and has its own IV, then each stage has (56+64) bits of key -- so the ensemble has 3*120 = 360 bits of key. Meanwhile, there's still my favorite: compress|des|tran|des|tran|des (where tran was posted here a week or two ago) -- -- <<Disclaimer: All opinions expressed are my own, of course.>> -- Carl Ellison cme@sw.stratus.com -- Stratus Computer Inc. M3-2-BKW TEL: (508)460-2783 -- 55 Fairbanks Boulevard ; Marlborough MA 01752-1298 FAX: (508)624-7488
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Path: arc1-ca.pugleaf.net!sparky!uunet!dtix!darwin.sura.net!spool.mu.edu!hri.com!noc.near.net!transfer.stratus.com!ellisun.sw.stratus.com!cme From: cme@ellisun.sw.stratus.com (Carl Ellison) Newsgroups: sci.crypt Subject: Re: Real question re DES vs IDEA cipher Message-ID: <1ho576INNpkj@transfer.stratus.com> Date: 29 Dec 92 00:13:26 GMT References: <1hcp41INNdi4@rave.larc.nasa.gov> <BzsH0G.9yz@chinet.chi.il.us> Organization: Stratus Computer, Software Engineering Lines: 22 NNTP-Posting-Host: ellisun.sw.stratus.com