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Re: [TLS] "Encrypted" SNI

"Salz, Rich" <rsalz@akamai.com> Wed, 10 May 2017 19:09 UTC

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From: "Salz, Rich" <rsalz@akamai.com>
To: TLS WG <tls@ietf.org>
Thread-Topic: [TLS] "Encrypted" SNI
Thread-Index: AQHSybLvEhuV4X1WPk6Zn8r+xi6goaHuJToAgAAGG4CAAATvgP//ve5Q
Date: Wed, 10 May 2017 19:09:28 +0000
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References: <3768598.32hupQ9b2b@pintsize.usersys.redhat.com> <5920A6B3-66F5-44D5-A367-82AD6431A6C4@dukhovni.org> <2478514.aZun5FUmZT@pintsize.usersys.redhat.com> <20865FC2-A021-4EAC-ACDA-E400855B5CE0@dukhovni.org>
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Subject: Re: [TLS] "Encrypted" SNI
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> Encryption means key agreement, and requires delaying SNI by a round-trip,
> or having published DH shares in DNS, which of course also needs privacy
> protection for SNI encryption to matter.

With TLS1.3 encryptedExtensions, secure "domain fronting" becomes possible.  

A am long overdue for a writeup on this.

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