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Re: [saag] AD review of draft-iab-crypto-alg-agility-06

Stephen Farrell <stephen.farrell@cs.tcd.ie> Wed, 26 August 2015 09:54 UTC

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Date: Wed, 26 Aug 2015 10:54:46 +0100
From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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To: "Paterson, Kenny" <Kenny.Paterson@rhul.ac.uk>, Yoav Nir <ynir.ietf@gmail.com>
References: <20150728013020.GO4347@mournblade.imrryr.org> <DM2PR0301MB0655CF099FA7C56E9B9D24A9A88D0@DM2PR0301MB0655.namprd03.prod.outlook.com> <20150728053035.GR4347@mournblade.imrryr.org> <CAHbuEH7B3_G9vAhw=U2tuz-Uh8mKMUfL6s=H+BOG96FDZaACig@mail.gmail.com> <20150824212907.GN9021@mournblade.imrryr.org> <619ffebb05ba4e2a9af03a6dcc768d6e@ustx2ex-dag1mb2.msg.corp.akamai.com> <20150824215037.GO9021@mournblade.imrryr.org> <9A043F3CF02CD34C8E74AC1594475C73F4AE62A1@uxcn10-5.UoA.auckland.ac.nz> <20150825134333.GX9021@mournblade.imrryr.org> <6b5167f3d0684a8a91caa6d37dec65e3@ustx2ex-dag1mb2.msg.corp.akamai.com> <20150825160627.GH9021@mournblade.imrryr.org> <55DC961A.903@cs.tcd.ie> <A25C2C97-2C03-459C-8167-475B85731D97@gmail.com> <55DCE960.4090801@cs.tcd.ie> <D202AB8E.5312F%kenny.paterson@rhul.ac.uk>
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Cc: Security Area Advisory Group <saag@ietf.org>
Subject: Re: [saag] AD review of draft-iab-crypto-alg-agility-06
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On 25/08/15 23:53, Paterson, Kenny wrote:
> And it feels to me that, for RC4, the currently known public techniques
> are starting to run out of steam. 

Thanks. I wasn't aware of that.

The only thing I'd add to your mail is that when you say that we don't
know how attacks will evolve, that's not quite true. We do know that
the attacks always get better, but we don't know by how much or when.

S.

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