Re: [jose] POLL(s): header criticality

FIRST POLL:  YES
SECOND POLL:  YES
THIRD POLL:  A

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hideki nara

2013/2/4 Karen O'Donoghue <odonoghue@isoc.org>:
> Folks,
>
> I am wrestling with how to help drive consensus on the topic of criticality
> of headers. For background, please review the current specification text,
> the minutes to the Atlanta meeting (IETF85), and the mailing list
> (especially the discussion in December with (Subj: Whether implementations
> must understand all JOSE header fields)). We need to come to closure on this
> issue in order to progress the specifications.
>
> As a tool to gather further information on determining a way forward, the
> following polls have been created. Please respond before 11 February 2013.
>
> Thanks,
> Karen
>
> *******************
> FIRST POLL: Should all header fields be critical for implementations to
> understand?
>
> YES – All header fields must continue to be understood by implementations or
> the input must be rejected.
>
> NO – A means of listing that specific header fields may be safely ignored
> should be defined.
>
> ********************
> SECOND POLL: Should the result of the first poll be "YES", should text like
> the following be added? “Implementation Note: The requirement to understand
> all header fields is a requirement on the system as a whole – not on any
> particular level of library software. For instance, a JOSE library could
> process the headers that it understands and then leave the processing of the
> rest of them up to the application. For those headers that the JOSE library
> didn’t understand, the responsibility for fulfilling the ‘MUST understand’
> requirement for the remaining headers would then fall to the application.”
>
> YES – Add the text clarifying that the “MUST understand” requirement is a
> requirement on the system as a whole – not specifically on JOSE libraries.
>
> NO – Don’t add the clarifying text.
>
> ************************
> THIRD POLL: Should the result of the first poll be "NO", which syntax would
> you prefer for designating the header fields that may be ignored if not
> understood?
>
> A – Define a header field that explicitly lists the fields that may be
> safely ignored if not understood.
>
> B – Introduce a second header, where implementations must understand all
> fields in the first but they may ignore not-understood fields in the second.
>
> C - Other??? (Please specify in detail.)
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