Re: [TLS] TLS ECH, how much can the hint stick out?

"Salz, Rich" <rsalz@akamai.com> Fri, 11 September 2020 13:26 UTC

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From: "Salz, Rich" <rsalz@akamai.com>
To: Christopher Patton <cpatton=40cloudflare.com@dmarc.ietf.org>, "Christian Huitema" <huitema@huitema.net>
CC: "tls@ietf.org" <tls@ietf.org>
Thread-Topic: [TLS] TLS ECH, how much can the hint stick out?
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Date: Fri, 11 Sep 2020 13:26:05 +0000
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Subject: Re: [TLS] TLS ECH, how much can the hint stick out?
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  *   I think we should be careful with the word "broken" ... here we're talking about "don't stick out", which is a deployment consideration only. The main security goal is confidentiality of the ClientHelloInner.

Perhaps this is just being pedantic, but I disagree with the tone of this. We want deployable confidentiality, and “don’t stick out” is something we believe is a necessary requirement to be deployable.