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Article #2327Re: Opinions on RSA's RC2 and RC4?
From: David Conrad
Date: Wed, 23 Dec 1992 14:52
Date: Wed, 23 Dec 1992 14:52
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In article <bontchev.725111504@fbihh> bontchev@fbihh.informatik.uni-hamburg.de writes: >karn@servo.qualcomm.com (Phil Karn) writes: >> Yeah. If NSA will let them out of the country, then they can't be very >> good at all. It's as simple as that. > >Hmm... I've heard ... that there is an exportable >version of MailSafe, which is limited to 512 (... 540?) bit keys >... Does that mean that NSA can factor such >numbers?... Probably not. Was it not that the reduction in key size for DES from 128- to 56-bits (with redesigned S-boxen) resulted in a stronger cipher once differential cryptanalysis was taken into account? Perhaps I remember wrong, I'm no expert. The U.S. has somewhat skewed views on these things, but this still isn't France. David R. Conrad -- = CAT-TALK Conferencing Network, Computer Conferencing and File Archive = - 1-313-882-2209, 300bps-14400bps, V.32/V.32bis/TurboPEP New users use 'new' - = as a login id. AVAILABLE VIA PC-PURSUIT!!! (City code "MIDET") = E-MAIL Address: dave@Michigan.COM
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Newsgroups: sci.crypt Path: arc1-ca.pugleaf.net!sparky!uunet!gatech!destroyer!Tygra.Michigan.COM!dave From: dave@tygra.Michigan.COM (David Conrad) Subject: Re: Opinions on RSA's RC2 and RC4? Organization: CAT-TALK Conferencing System Date: Wed, 23 Dec 1992 14:52:29 GMT Message-ID: <1992Dec23.145230.27856dave@tygra.Michigan.COM> References: <1992Dec22.202631.25004@gallant.apple.com> <1992Dec22.213023.6850@qualcomm.com> <bontchev.725111504@fbihh> Lines: 23