Re: [TLS] draft-sheffer-tls-bcp: DH recommendations

"Michael Ströder " <michael@stroeder.com> Thu, 19 September 2013 10:18 UTC

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To: "tls@ietf.org" <tls@ietf.org>, Peter Gutmann <pgut001@cs.auckland.ac.nz>
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From: "Michael =?UTF-8?B?U3Ryw7ZkZXI=?=" <michael@stroeder.com>
Date: Thu, 19 Sep 2013 12:17:55 +0200
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Subject: Re: [TLS] draft-sheffer-tls-bcp: DH recommendations
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On Thu, 19 Sep 2013 08:50:05 +0000 Peter Gutmann <pgut001@cs.auckland.ac.nz>;
wrote
> Yaron Sheffer <yaronf.ietf@gmail.com>; writes:
> 
> >There are multiple issues with MODP DH in TLS (performance is just one of
> >them). So I'd like to recommend EC DHE instead - which makes this discussion
> >moot.
> 
> There are even more issues with ECC, namely their brittleness, paranoia
> (whether justified or not) about NSA meddling, and patent issues.  DH is
> simple in comparison.

I tend to concur with Peter here.

Especially if only the limited param length of MODP DH in current
implementations rules out its recommendation in the draft.

Ciao, Michael.