Re: [VCARDDAV] Signed vCards

DataPacRat <datapacrat@gmail.com> Thu, 18 July 2013 02:05 UTC

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References: <CAB5WduA09GVZ7j2q4e9aM-CYBj27_deKT=VHhVL0+gzG1yRq0A@mail.gmail.com> <CAD6ztsqqQwbN_-yv9+-tHuh8X1MfBRKEqF6ugH=0avHTuKxzWA@mail.gmail.com> <CAB5WduCO7mNPAqgqYWXmceog3wVNox5reUAjsCQRUXRQB0Wftw@mail.gmail.com> <51D18BC4.5030300@cisco.com> <CAB5WduAJSiqEjsw+DUo4Emy-Tw30nTw1WA2MshxJAfHN1sh0WA@mail.gmail.com> <51D1A52C.6000806@viagenie.ca> <CAB5WduDEe+tC21L6AbW0HRzTf5Z6L0oCA+M4X8_p1ERK0rFPtA@mail.gmail.com> <51D570F4.1020204@cisco.com> <CAB5WduC9OQDknwZj5PHQ0t8Y4V1vtpafeJuZXsnhrWKSmDfwFQ@mail.gmail.com> <CAB5WduC-m-TH9a1WrFY6QX8cQ2bJ8EgOD8+swEwpVxM7my42UA@mail.gmail.com> <CAB5WduBgpkQO+-4iNDspxR7X7JKeFU3UfjfiPd7qWWr7QRY3ew@mail.gmail.com> <CAB5WduCG356V5bHH8-7PYUtF3VqW5VRM-e=N0h7rbAJN51sSuA@mail.gmail.com> <51E42D85.4060806@viagenie.ca> <CAB5WduBJEXSsV5T-1MA+05wkQ6CZs8PySwUaQaAHew0E7dErbQ@mail.gmail.com>
Date: Wed, 17 Jul 2013 22:05:01 -0400
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From: DataPacRat <datapacrat@gmail.com>
To: Simon Perreault <simon.perreault@viagenie.ca>
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Subject: Re: [VCARDDAV] Signed vCards
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On Monday, 15 July 2013, DataPacRat wrote:

> On Mon, Jul 15, 2013 at 1:12 PM, Simon Perreault
> <simon.perreault@viagenie.ca <javascript:;>> wrote:
> > Le 2013-07-15 19:00, DataPacRat a écrit :
> >> A vCard which is compatible with the signed vCard extensions MAY add
> >> an 's' to the version number.
> >> A vCard which uses any of the signed vCard extensions SHOULD add an
> >> 's' to the version number.
> >> A vCard which uses a negative number in the CONFIDENCE property (ie,
> >> has a confidence of under 50%) MUST add an 's' to the version number.
> >
> > What's the purpose of the 's'?
>
>
> Another option that comes to mind could be to roll up the new tags
> from RFCs 6473 and 6474 along with the signed vCard tags into the base
> spec, and call the whole thing vCard 4.1
>

After a bit of thought, I'm going to suggest that the 4.1 approach isn't
the best. There's a significant difference between current standard vCards
and the signed vCard approach: a program which fully decodes the latter
needs a full set of cryptographic subroutines. There seems to be some
benefit in allowing for some vCard decoders that remain light and nimble,
while also providing the option for cryptographically authenticated ones.

So, unless there's feedback otherwise, I think that I'll have the draft
stick with adding an 's' to the version number for crypto-based vCards.


-- 
Thank you for your time,
-- 
DataPacRat