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Re: [TLS] WG adoption + early code point assignment: draft-mavrogiannopoulos-chacha-tls

Yoav Nir <ynir.ietf@gmail.com> Wed, 20 May 2015 19:27 UTC

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From: Yoav Nir <ynir.ietf@gmail.com>
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Date: Wed, 20 May 2015 22:27:38 +0300
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To: Martin Thomson <martin.thomson@gmail.com>
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Cc: Adam Langley <agl@imperialviolet.org>, IETF TLS Working Group <tls@ietf.org>
Subject: Re: [TLS] WG adoption + early code point assignment: draft-mavrogiannopoulos-chacha-tls
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> On May 20, 2015, at 9:46 PM, Martin Thomson <martin.thomson@gmail.com> wrote:
> 
> On 20 May 2015 at 11:43, Yoav Nir <ynir.ietf@gmail.com> wrote:
>>> We're talking about a code point allocation.  That usually requires a
>>> commitment to semantics first.
>> 
>> There’s never a commitment. Until a draft is approved by the IESG anything can be changed.
> 
> What value is there in a code point if no two parties are able to
> agree on its semantics?  

But we do agree on the semantics. They are whatever’s in the latest draft. And that’s good enough to implement and test interoperability. Of course if you ship it as anything other than an experimental feature, you are risking getting interoperability problems later, but this is no different from any draft, including those that do not require code point assignments.

> I believe that the conditions for an early
> request are:
> 
> 1. we agree that there is enough demand for whatever it is now and
> don't want to wait until the IESG approve a spec
> 2. we agree that the semantics are stable enough
> 
> This might meet the first, but it looks like the second is a little less firm.

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