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Re: [TLS] Final nail in the coffin for cleartext SNI/ALPN in TLS 1.3

Michael D'Errico <mike-list@pobox.com> Fri, 08 November 2013 19:41 UTC

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Date: Fri, 08 Nov 2013 11:39:48 -0800
From: Michael D'Errico <mike-list@pobox.com>
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To: Ralf Skyper Kaiser <skyper@thc.org>
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Subject: Re: [TLS] Final nail in the coffin for cleartext SNI/ALPN in TLS 1.3
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Ralf Skyper Kaiser wrote:
>  
> Some thoughts why SNI (host name) and ALPN should be
> transmitted encrypted and not in clear....

I'm fine with encrypting these as long as the server
receives them prior to selecting a certificate.

SNI allows for multi-homing (different server names
on the same IP), and ALPN allows you to put multiple
services on the same port (e.g. SMTP/POP3/IMAP all on
port 443 along with HTTPS/SPDY).  Each service might
require its own certificate.

Mike

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