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Re: [TLS] Mentioning DTLS

mrex@sap.com (Martin Rex) Fri, 14 March 2014 21:04 UTC

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To: Andrei Popov <Andrei.Popov@microsoft.com>
Date: Fri, 14 Mar 2014 22:04:18 +0100
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Subject: Re: [TLS] Mentioning DTLS
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Andrei Popov wrote:
>
> Mentioning DTLS makes sense; I have no objection to making this
> change in the next revision.

Speaking of DTLS.

NEITHER of the two official DTLS specifications of the IETF does support
TLS extensions.  There exists no definition of a TLS ClientHello PDU
that provides room for (D)TLS extensions, and there is no forward
extensibility notice for the DTLS ClientHello PDU in the fashion
that was retrofitted into the SSLv3 specification.

If DTLS was supposed to allow TLS extensions in the DTLS ClientHello PDU,
then someone (preferably a DTLS implementor or one of the document
authors) really should file erratas with a description of the
DTLS ExtendendedClientHello and DTLS ExtendedServerHello PDUs for
both DTLS specifications (rfc4347 and rfc6347).


-Martin

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