Re: Opinions on RSA's RC2 and RC4?

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Article #2311

#2311

From: Vesselin Bontchev
Date: Wed, 23 Dec 1992 11:51

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karn@servo.qualcomm.com (Phil Karn) writes:

> >Does anyone have an opinion on the technical merits of RC2 and RC4?

> 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 (rumours, rumours...) that thre is an exportable
version of MailSafe, which is limited to 512 (or was it 540?) bit keys
(or was it moduli?)... Does that mean that NSA can factor such
numbers?... Would be a pretty serous advancement in mathematics, not
just in cryptography... It would also mean that they find cracking the
key easier than the other forms of attack... Could somebody in the USA
check that there is indeed an exportable version of MailSafe and see
what the max key size is?

Regards,
Vesselin
-- 
Vesselin Vladimirov Bontchev          Virus Test Center, University of Hamburg
Tel.:+49-40-54715-224, Fax: +49-40-54715-226      Fachbereich Informatik - AGN
< PGP 2.1 public key available on request. > Vogt-Koelln-Strasse 30, rm. 107 C
e-mail: bontchev@fbihh.informatik.uni-hamburg.de    D-2000 Hamburg 54, Germany

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References: <1992Dec22.202631.25004@gallant.apple.com> <1992Dec22.213023.6850@qualcomm.com>

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From: bontchev@fbihh.informatik.uni-hamburg.de (Vesselin Bontchev)
Subject: Re: Opinions on RSA's RC2 and RC4?
Message-ID: <bontchev.725111504@fbihh>
Sender: news@informatik.uni-hamburg.de (Mr. News)
Reply-To: bontchev@fbihh.informatik.uni-hamburg.de
Organization: Virus Test Center, University of Hamburg
References: <1992Dec22.202631.25004@gallant.apple.com> <1992Dec22.213023.6850@qualcomm.com>
Date: 23 Dec 92 11:51:44 GMT
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