Re: [Cbor] [COSE] CBOR magic number, file format and tags
Michael Richardson <mcr+ietf@sandelman.ca> Thu, 21 January 2021 12:24 UTC
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From: Michael Richardson <mcr+ietf@sandelman.ca>
To: worley@ariadne.com
cc: Doug Ewell <doug@ewellic.org>, cose@ietf.org, cbor@ietf.org
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Date: Thu, 21 Jan 2021 07:24:39 -0500
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Subject: Re: [Cbor] [COSE] CBOR magic number, file format and tags
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Dale R. Worley <worley@ariadne.com> wrote: > "Doug Ewell" <doug@ewellic.org> writes: >>> Since very early in computing, operating systems have sought ways to >>> mark which files could be proposed by which programs. >> >> The word "proposed" feels very awkward here. Maybe "opened" or >> "manipulated," or some recasting of the sentence that talks about >> files "belonging to" programs, or something similar. > When I first read that, I mis-read it as "processed by". I suspect > that is what is intended. > But ... Am I missing something? Isn't a magic number provided by RFC > 8949 section 3.4.6? > 3.4.6. Self-Described CBOR > [...] Tag number 55799 is defined for this purpose, specifically That tells us that it might be CBOR. It does not distinguish a CBOR encoded certificate from a CBOR encoded RFC8366 artifact, for instance. -- Michael Richardson <mcr+IETF@sandelman.ca> . o O ( IPv6 IøT consulting ) Sandelman Software Works Inc, Ottawa and Worldwide
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] CBOR magic number, file format and tags Michael Richardson
- [Cbor] CBOR magic number, file format and tags Michael Richardson
- Re: [Cbor] CBOR magic number, file format and tags Josef 'Jeff' Sipek
- Re: [Cbor] [COSE] CBOR magic number, file format … David Waite
- Re: [Cbor] CBOR magic number, file format and tags Michael Richardson
- Re: [Cbor] CBOR magic number, file format and tags Michael Richardson
- Re: [Cbor] CBOR magic number, file format and tags Doug Ewell
- Re: [Cbor] CBOR magic number, file format and tags Josef 'Jeff' Sipek
- Re: [Cbor] CBOR magic number, file format and tags worley
- Re: [Cbor] [COSE] CBOR magic number, file format … Carsten Bormann
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … Carsten Bormann
- Re: [Cbor] [COSE] CBOR magic number, file format … Carsten Bormann
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … John Mattsson
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … worley
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … worley
- Re: [Cbor] [COSE] CBOR magic number, file format … Carsten Bormann
- Re: [Cbor] [COSE] CBOR magic number, file format … Laurence Lundblade
- Re: [Cbor] [COSE] CBOR magic number, file format … Carsten Bormann
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … Carsten Bormann
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … Carsten Bormann
- Re: [Cbor] [COSE] CBOR magic number, file format … Michael Richardson
- Re: [Cbor] [COSE] CBOR magic number, file format … worley