From owner-freebsd-security  Thu Aug 29 13:33:58 2002
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To: "Perry E. Metzger" <perry@piermont.com>
Cc: "Karsten W. Rohrbach" <karsten@rohrbach.de>, mipam@ibb.net,
	Matthias Buelow <mkb@mukappabeta.de>,
	Stefan =?iso-8859-1?q?Kr=FCger?= <skrueger@europe.com>,
	freebsd-security@FreeBSD.ORG, tech-security@netbsd.org,
	misc@openbsd.org
Subject: Re: 1024 bit key considered insecure (sshd)
References: <20020828200748.90964.qmail@mail.com>
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From: Petr Swedock <petr@blade-runner.mit.edu>
Date: 29 Aug 2002 16:37:51 -0400
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"Perry E. Metzger" <perry@piermont.com> writes:

> Petr Swedock <petr@blade-runner.mit.edu> writes:

> > > at your data like breaking in to your physical location. Silly me. I
> > > guess I missed the concept behind crypto.
> > 
> > The concept behind crypto is to confuse, scramble and obfuscate.
> 
> I'm glad you've explained it to me.

Glad I could help =-)

> > When it was first designed for and employed in computers the existing 
> > mathematical models, computer muscle and modes of analysis were
> > thought to assure unbreakability.  Now the use has morphed into
> > a race condition where present mathematical models and future 
> > computer muscle, coupled with existing modes of analysis are
> > thought to assure breakability.
> 
> So, this means that because a person with a billion in spare change
> lying about might (MIGHT!) be able to break a 1024 bit key every year,
> we should all panic?

I'm quite sure I'm not advocating panic. I'm only addressing 
your (perhaps flippant) remark about the concept behind crypto:
which remark seemed to indicate the existence of a non-nil
utility function from the moment crypto was first conceptualized.

Peace,

Petr

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