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Re: [TLS] [Technical Errata Reported] RFC5246 (4382)

Andrei Popov <Andrei.Popov@microsoft.com> Fri, 29 May 2015 17:39 UTC

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From: Andrei Popov <Andrei.Popov@microsoft.com>
To: Martin Thomson <martin.thomson@gmail.com>, "Salz, Rich" <rsalz@akamai.com>
Thread-Topic: [TLS] [Technical Errata Reported] RFC5246 (4382)
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Date: Fri, 29 May 2015 17:28:08 +0000
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Cc: "tls@ietf.org" <tls@ietf.org>
Subject: Re: [TLS] [Technical Errata Reported] RFC5246 (4382)
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If we change the "presentation language" used by TLS specs, then we'll end up with two different, inconsistent notations. Anyone implementing TLS 1.3 will then need to understand the new "presentation language", and also be well-versed in the old one (e.g. so that they can implement existing extensions described using the old notation). This seems more confusing than what we have now.

But if we do end up selecting a new notation, let's at least make sure correct parsing code can be auto-generated from it.

Cheers,

Andrei

-----Original Message-----
From: TLS [mailto:tls-bounces@ietf.org] On Behalf Of Martin Thomson
Sent: Friday, May 29, 2015 10:16 AM
To: Salz, Rich
Cc: tls@ietf.org
Subject: Re: [TLS] [Technical Errata Reported] RFC5246 (4382)

On 29 May 2015 at 10:05, Salz, Rich <rsalz@akamai.com> wrote:
> ASN.1 would be interesting, but I don't believe PER is the right thing as we'd end up defining a completely new on-the-wire protocol for TLS 1.3.  Instead you'd have to define something like TER, the TLS Encoding Rules.

I'm not certain about that.

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