[146822] in cryptography@c2.net mail archive
Re: [Cryptography] Symmetric cipher + Backdoor = Public Key System
daemon@ATHENA.MIT.EDU (Jerry Leichter)
Sun Sep 8 13:23:47 2013
X-Original-To: cryptography@metzdowd.com
From: Jerry Leichter <leichter@lrw.com>
In-Reply-To: <20130907195609.6001bbcc@heidi.cb.piermont.com>
Date: Sat, 7 Sep 2013 21:54:55 -0400
To: "Perry E. Metzger" <perry@piermont.com>
Cc: cryptography@metzdowd.com, ianG <iang@iang.org>
Errors-To: cryptography-bounces+crypto.discuss=bloom-picayune.mit.edu@metzdowd.com
On Sep 7, 2013, at 7:56 PM, Perry E. Metzger wrote:
>> I'm not as yet seeing that a block cipher with a backdoor is a public
>> key system,
>
> Then read the Blaze & Feigenbaum paper I posted a link to. It makes a
> very good case for that, one that Jerry unaccountably does not seem to
> believe. Blaze seemed to still believe the result as of a few days ago.
I've given quite a bit of argument as to why the result doesn't really say what it seems to say. Feel free to respond to the actual counterexamples I gave, rather than simply say I "unaccountably" don't believe the paper.
-- Jerry
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