[Ace] draft-ietf-ace-cbor-web-token-08 / draft-ietf-ace-cwt-proof-of-possession

2017-10-01 Thread Hannes Tschofenig
[Chair hat off] Hi all, after reading draft-ietf-ace-dtls-authorize I was wondering how the RS determines what key to use to decrypt noticed that none of the examples in draft-ietf-ace-cbor-web-token-08 and in draft-ietf-ace-cwt-proof-of-possession use some form of key id to allow finding the ap

Re: [Ace] draft-ietf-ace-cbor-web-token-08 / draft-ietf-ace-cwt-proof-of-possession

2017-10-01 Thread Mike Jones
Mike -Original Message- From: Ace [mailto:ace-boun...@ietf.org] On Behalf Of Hannes Tschofenig Sent: Sunday, October 1, 2017 2:40 AM To: Ace@ietf.org Subject: [Ace] draft-ietf-ace-cbor-web-token-08 / draft-ietf-ace-cwt-proof-of-possession [Chair hat off] Hi all, after reading draft-ietf-ace

Re: [Ace] draft-ietf-ace-cbor-web-token-08 / draft-ietf-ace-cwt-proof-of-possession

2017-10-02 Thread Samuel Erdtman
Hi Hannes, This is how I think it should be done. There are two keys that needs to be identified, the key to verify the CWT and the key to use for the DTLS handshake. When it comes to verifying the CWT, it is the AS key that should be used. I donĀ“t think it is unreasonable to assume that the AS