Re: [COSE] [Technical Errata Reported] RFC8152 (5669)

[Benjamin Kaduk <[e-mail]>]

On Sun, Mar 24, 2019 at 09:27:50AM +0100, Jim Schaad wrote:
> In the CBOR encoding it is pretty simple as non-negative integers and
> negative integers are encoded as separate types.

Right.  But if I look at, e.g.,

   COSE_Key = {
       1 => tstr / int,          ; kty
       ? 2 => bstr,              ; kid
       ? 3 => tstr / int,        ; alg
       ? 4 => [+ (tstr / int) ], ; key_ops
       ? 5 => bstr,              ; Base IV
       * label => values
   }

that has 'kty' as tstr / int, and 'int' is defined as either an unsigned
integer or a negative integer, so that doesn't really force it to be in the
unsigned space.

(I'm not terribly sure that that's the right CDDL in which values from the
registry go, though.)

-Ben