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Re: [TLS] [ECH] Reverting the config ID change

Eric Rescorla <ekr@rtfm.com> Wed, 17 February 2021 16:01 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Wed, 17 Feb 2021 08:00:00 -0800
Message-ID: <CABcZeBPWVv2dDoKTabS6fOUMRT_V7DoygXsG62C1MJiCArxVSA@mail.gmail.com>
To: Stephen Farrell <stephen.farrell@cs.tcd.ie>
Cc: Christopher Wood <caw@heapingbits.net>, "TLS@ietf.org" <tls@ietf.org>
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Subject: Re: [TLS] [ECH] Reverting the config ID change
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On Tue, Feb 16, 2021 at 4:44 PM Stephen Farrell <stephen.farrell@cs.tcd.ie>
wrote:

>
>
> On 17/02/2021 00:34, Eric Rescorla wrote:
> > How is it any harder to manage a multi-octet server-chosen value than a
> > single-octet server-chosen value?
>
> Easier for the library on the server side. If it's >1 octet
> then someone will want some semantics. If ==1 then they'll
> have to accept none and possible collisions so it can be
> handled independently inside the library.
>

The server is free to enforce 1 byte.

-Ekr

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