Re: [TLS] OPTLS: Signature-less TLS 1.3
Nico Williams <nico@cryptonector.com> Tue, 11 November 2014 00:30 UTC
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Date: Mon, 10 Nov 2014 18:30:00 -0600
From: Nico Williams <nico@cryptonector.com>
To: Yoav Nir <ynir.ietf@gmail.com>
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Subject: Re: [TLS] OPTLS: Signature-less TLS 1.3
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On Mon, Nov 10, 2014 at 02:08:06PM -1000, Yoav Nir wrote: > It should be noted that CloudFlare manages to make delegation work > ([1]) even without changing the protocol, but I wonder a little about > that solution. Isn't the latency horrible? [...] Session resumption makes up for it, amortizing the impact on the user. It's probably no worse (typically) than 2 or 3x the normal latency, for the first connection (or first handful of concurrent connections). It'd be interesting to see how noticeable this is, but I suspect that on the whole it's not really all that noticeable. > [...] How secure is the > connection between CloudFlare and the customer? [...] In principle it should be no less secure than TLS itself. (I've not looked closely enough, but I imagine that's exactly what CloudFlare uses for their connection to their customers' key sign server.) > [...] Does it create a > sign-everything service? Yes, which is why you need to get authentication (of CloudFlare to the key server) right, so you can authorize key sign requests. And the customer should be doing this with server names and certs and keys that are only for the CloudFlare use anyways. This brilliantly lets CloudFlare out of the business of having certs with lots of names, and it simplifies key management for their customers. The price is that this requires SNI. > [1] http://blog.cloudflare.com/keyless-ssl-the-nitty-gritty-technical-details/ Nico --
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Rene Struik
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Rene Struik
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nikos Mavrogiannopoulos
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Ilari Liusvaara
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Manuel Pégourié-Gonnard
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hanno Böck
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Peter Gutmann
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Martin Thomson
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Martin Thomson
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Martin Thomson
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Andy Lutomirski
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Andy Lutomirski
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Daniel Kahn Gillmor
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Daniel Kahn Gillmor
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Martin Thomson
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Daniel Kahn Gillmor
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Martin Thomson
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Eric Rescorla
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Yoav Nir
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Daniel Kahn Gillmor
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Yoav Nir
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Daniel Kahn Gillmor
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Yoav Nir
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Nico Williams
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Salz, Rich
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Blumenthal, Uri - 0558 - MITLL
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Watson Ladd
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Salz, Rich
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Dan Brown
- Re: [TLS] OPTLS: Signature-less TLS 1.3 Hugo Krawczyk