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

Eric Rescorla <ekr@rtfm.com> Fri, 29 May 2015 12:39 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Fri, 29 May 2015 05:38:51 -0700
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Cc: Kathleen Moriarty <Kathleen.Moriarty.ietf@gmail.com>, "tls@ietf.org" <tls@ietf.org>, lscorco@nsa.gov
Subject: Re: [TLS] [Technical Errata Reported] RFC5246 (4382)
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I do not believe that this report is correct:

"A vector (single-dimensioned array) is a stream of homogeneous data
elements.
The size of the vector may be specified at documentation time or left
unspecified until runtime. In either case, the length declares the number of
bytes, not the number of elements, in the vector."





On Fri, May 29, 2015 at 4:39 AM, RFC Errata System <
rfc-editor@rfc-editor.org> wrote:

> The following errata report has been submitted for RFC5246,
> "The Transport Layer Security (TLS) Protocol Version 1.2".
>
> --------------------------------------
> You may review the report below and at:
> http://www.rfc-editor.org/errata_search.php?rfc=5246&eid=4382
>
> --------------------------------------
> Type: Technical
> Reported by: Laura Corcoran <lscorco@nsa.gov>
>
> Section: 4.3
>
> Original Text
> -------------
> In the following example, Datum is defined to be three consecutive
>    bytes that the protocol does not interpret, while Data is three
>    consecutive Datum, consuming a total of nine bytes.
>
>       opaque Datum[3];      /* three uninterpreted bytes */
>       Datum Data[9];        /* 3 consecutive 3 byte vectors */
>
>
> Corrected Text
> --------------
> In the following example, Datum is defined to be three consecutive
>    bytes that the protocol does not interpret, while Data is three
>    consecutive Datum, consuming a total of nine bytes.
>
>       opaque Datum[3];      /* three uninterpreted bytes */
>       Datum Data[3];        /* 3 consecutive 3 byte vectors */
>
>
> Notes
> -----
> The 9 in "Datum Data[9]" should be a 3 because Datum is a data type that
> consumes 3 bytes, so as written the Data vector is 27 bytes long. To make
> it a 9 byte vector the 9 must change to a 3.
>
> Instructions:
> -------------
> This erratum is currently posted as "Reported". If necessary, please
> use "Reply All" to discuss whether it should be verified or
> rejected. When a decision is reached, the verifying party (IESG)
> can log in to change the status and edit the report, if necessary.
>
> --------------------------------------
> RFC5246 (draft-ietf-tls-rfc4346-bis-10)
> --------------------------------------
> Title               : The Transport Layer Security (TLS) Protocol Version
> 1.2
> Publication Date    : August 2008
> Author(s)           : T. Dierks, E. Rescorla
> Category            : PROPOSED STANDARD
> Source              : Transport Layer Security
> Area                : Security
> Stream              : IETF
> Verifying Party     : IESG
>
>