Re: [TLS] ESNI padding the Certificate message

Stephen Farrell <stephen.farrell@cs.tcd.ie> Thu, 13 December 2018 19:04 UTC

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To: Eric Rescorla <ekr@rtfm.com>
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From: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Date: Thu, 13 Dec 2018 19:04:08 +0000
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Subject: Re: [TLS] ESNI padding the Certificate message
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Hiya,

On 13/12/2018 15:09, Eric Rescorla wrote:
> Sure. Send a PR.

Just did that adding in CerticateVerify. [1]

That PR does also take out the "longest cert length" aspect
of the current text - I reckon Viktor's right that one might
not know that, and it could be error prone as new certs get
issued in some scenarios. I'd not yell much if you wanted to
keep that aspect but I'd equally argue we might be better off
with some more general "traffic analysis considerations"
text we can work on later (e.g. after the DNS stuff changes).

Cheers,
S


[1] https://github.com/tlswg/draft-ietf-tls-esni/pull/122