Re: [TLS] [Editorial Errata Reported] RFC6347 (4642)

Henrik Grubbström <grubba@gmail.com> Mon, 21 March 2016 15:37 UTC

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Date: Mon, 21 Mar 2016 16:37:15 +0100
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From: Henrik Grubbström <grubba@gmail.com>
To: RFC Errata System <rfc-editor@rfc-editor.org>
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Cc: sean+ietf@sn3rd.com, Kathleen.Moriarty.ietf@gmail.com, worley@ariadne.com, "tls@ietf.org" <tls@ietf.org>, nagendra@cs.stanford.edu
Subject: Re: [TLS] [Editorial Errata Reported] RFC6347 (4642)
Precedence: list

On Fri, Mar 18, 2016 at 8:41 PM, RFC Errata System
<rfc-editor@rfc-editor.org> wrote:
> The following errata report has been submitted for RFC6347,
> "Datagram Transport Layer Security Version 1.2".
>
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=6347&eid=4642
>
> --------------------------------------
> Type: Editorial
> Reported by: Dale R. Worley <worley@ariadne.com>
>
> Section: 4.1
>
> Original Text
> -------------
>    version
>       The version of the protocol being employed.  This document
>       describes DTLS version 1.2, which uses the version { 254, 253 }.
>       The version value of 254.253 is the 1's complement of DTLS version
>       1.2.  This maximal spacing between TLS and DTLS version numbers
>       ensures that records from the two protocols can be easily
>       distinguished.  It should be noted that future on-the-wire version
>       numbers of DTLS are decreasing in value (while the true version
>       number is increasing in value.)
>
>
> Corrected Text
> --------------
> Replace "1's complement of DTLS version" with "1's complement
> of TLS version":
>
>    version
>       The version of the protocol being employed.  This document
>       describes DTLS version 1.2, which uses the version { 254, 253 }.
>       The version value of 254.253 is the 1's complement of TLS version
>       1.2.  This maximal spacing between TLS and DTLS version numbers
>       ensures that records from the two protocols can be easily
>       distinguished.  It should be noted that future on-the-wire version
>       numbers of DTLS are decreasing in value (while the true version
>       number is increasing in value.)

As far as I can see, the original text is correct, which is easy to
see if you look at the corresponding paragraph of RFC 4347 (DTLS 1.0):

    version
      The version of the protocol being employed. This document describes DTLS
      Version 1.0, which uses the version { 254, 255 }. The version
value of 254.255
      is the 1's complement of DTLS Version 1.0.

If the suggested text had been correct, then the encoding in RFC 4347
would have been { 254, 254 } as DTLS 1.0 is based on TLS 1.1.

-- 
Henrik Grubbström                                       grubba@grubba.org
Roxen Internet Software AB                              grubba@roxen.com

[TLS] [Editorial Errata Reported] RFC6347 (4642) RFC Errata System
Re: [TLS] [Editorial Errata Reported] RFC6347 (46… Henrik Grubbström
Re: [TLS] [Editorial Errata Reported] RFC6347 (46… Dale R. Worley