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Re: [TLS] SNI from CDN to Origin (was I-D Action: draft-ietf-tls-sni-encryption-08.txt)

Eric Rescorla <ekr@rtfm.com> Fri, 11 October 2019 13:24 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Fri, 11 Oct 2019 06:23:32 -0700
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To: Rob Sayre <sayrer@gmail.com>
Cc: Martin Thomson <mt@lowentropy.net>, "TLS@ietf.org" <tls@ietf.org>
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Subject: Re: [TLS] SNI from CDN to Origin (was I-D Action: draft-ietf-tls-sni-encryption-08.txt)
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On Thu, Oct 10, 2019 at 8:12 PM Rob Sayre <sayrer@gmail.com> wrote:

> On Fri, Oct 11, 2019 at 5:37 AM Martin Thomson <mt@lowentropy.net> wrote:
>
>> On Fri, Oct 11, 2019, at 07:57, Ben Schwartz wrote:
>> > The obvious solution is for the TLS client (i.e. the CDN) to support
>> > direct entry of ESNI public keys alongside the IP address. Users who
>> > want to be able to rotate their ESNI keys more easily should use a
>> > backend identified by a domain name that is distinct from the
>> > user-facing origin hostname.
>>
>> I was about to say the same thing.  No need to get fancy.
>>
>
> Isn't that more complicated than sending the SNI in the second client
> message, though?
>

Well, both of these are more complicated than Host header. What's wrong
with that?

-Ekr


> thanks,
> Rob
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