Proof-of-Possession Key Semantics for CBOR Web Tokens (CWTs) spec addressing review comments

The Proof-of-Possession Key Semantics for CBOR Web Tokens (CWTs) specification has been updated to address comments received since its initial publication. Changes were:

• Tracked CBOR Web Token (CWT) Claims Registry updates.
• Addressed review comments by Michael Richardson and Jim Schaad.
• Added co-authors Ludwig Seitz, Göran Selander, Erik Wahlström, Samuel Erdtman, and Hannes Tschofenig.

Thanks for the feedback received to date!

The specification is available at:

• https://tools.ietf.org/html/draft-jones-ace-cwt-proof-of-possession-01

An HTML-formatted version is also available at:

• https://self-issued.info/docs/draft-jones-ace-cwt-proof-of-possession-01.html