[Ace] Syntax check of examples in draft-ietf-ace-cwt-proof-of-possession-05

Roman Danyliw <rdd@cert.org> Fri, 30 November 2018 19:10 UTC

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From: Roman Danyliw <rdd@cert.org>
To: "ace@ietf.org" <ace@ietf.org>
Thread-Topic: Syntax check of examples in draft-ietf-ace-cwt-proof-of-possession-05
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Date: Fri, 30 Nov 2018 19:10:07 +0000
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Subject: [Ace] Syntax check of examples in draft-ietf-ace-cwt-proof-of-possession-05
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Hello!

As part of my shepherd review, I ran all of the examples in draft-ietf-ace-cwt-proof-of-possession-05 through a CBOR diagnostic-to-CBOR validator (thanks Carsten for cbor.me).  All of the examples were fine but the first one in Section 3.3:

--[current text]--
     {
      /kty/ 1 : /Symmetric/ 4,
      /alg/ 3 : /HMAC256/ 5,
      /k/ -1 : h'6684523ab17337f173500e5728c628547cb37df
                 e68449c65f885d1b73b49eae1A0B0C0D0E0F10'
     }
--[end]--

The error was:

Expected one of [ \t\n\r], "/", [0-9a-fA-F] at line 5, column 56 (byte 184) after { /kty/ 1 : /Symmetric/ 4, /alg/ 3 : /HMAC256/ 5, /k/ -1 : h'6684523ab17337f173500e5728c628547cb37df e68449c65f885d1b73b49eae1A0B0C0D0E0F10

It appears that the string of hex encoded octets in /k/ is short one character.

Roman