Hello ACE,We have recently submitted an updated version of draft-tiloca-ace-group-oscore-profile
https://tools.ietf.org/html/draft-tiloca-ace-group-oscore-profile-05The document describes a profile of ACE where client and resource server(s) communicate with Group OSCORE. This supports fine-grained access control in group communication environments, where different group members have different access rights to the resources of the servers in the group.
This version further builds on the major update done in v -02, with the profile now focused on Group OSCORE as only security protocol. Changes are especially about:
1) Overall alignment with phrasing and considerations from the latest updates to the OSCORE profile [1].
2) Addressing comments from Christian Amsüss (thanks!) on:--- defining how to handle the case where the ACE client has changed the public key used in the OSCORE group; --- clarifying what it means to keep an Access Token aligned over time with information about the ACE client as a member of the OSCORE group.
3) Revision of both the main operating mode and the "Dual Mode" in Appendix A, as to the ACE client requesting an updated Access Token for updating its access rights.
Comments are very welcome! Best, /Marco [1] https://datatracker.ietf.org/doc/draft-ietf-ace-oscore-profile/ -------- Forwarded Message --------Subject: New Version Notification for draft-tiloca-ace-group-oscore-profile-05.txt
Date: Mon, 22 Feb 2021 09:08:38 -0800 From: [email protected]To: Francesca Palombini <[email protected]>, Ludwig Seitz <[email protected]>, Marco Tiloca <[email protected]>, Rikard Hoeglund <[email protected]>
A new version of I-D, draft-tiloca-ace-group-oscore-profile-05.txt has been successfully submitted by Marco Tiloca and posted to the IETF repository. Name: draft-tiloca-ace-group-oscore-profile Revision: 05Title: Group OSCORE Profile of the Authentication and Authorization for Constrained Environments Framework
Document date: 2021-02-22 Group: Individual Submission Pages: 57URL: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Farchive%2Fid%2Fdraft-tiloca-ace-group-oscore-profile-05.txt&data=04%7C01%7Cmarco.tiloca%40ri.se%7C2839d382f59a40707f0d08d8d754802b%7C5a9809cf0bcb413a838a09ecc40cc9e8%7C0%7C0%7C637496105234024291%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=8PEM%2BwR4Mhxjy%2Bx%2BiRxZG2OfOh2b13erpqoevXPvXBI%3D&reserved=0 Status: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fdraft-tiloca-ace-group-oscore-profile%2F&data=04%7C01%7Cmarco.tiloca%40ri.se%7C2839d382f59a40707f0d08d8d754802b%7C5a9809cf0bcb413a838a09ecc40cc9e8%7C0%7C0%7C637496105234024291%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=IBRq0lPPp%2F7S6ARs89lZzv98EEh7mp0c%2BtDg1bm2w4E%3D&reserved=0 Htmlized: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdatatracker.ietf.org%2Fdoc%2Fhtml%2Fdraft-tiloca-ace-group-oscore-profile&data=04%7C01%7Cmarco.tiloca%40ri.se%7C2839d382f59a40707f0d08d8d754802b%7C5a9809cf0bcb413a838a09ecc40cc9e8%7C0%7C0%7C637496105234024291%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Ot53Updjp%2BapQ3qZG0yyIFJQqM1ehgfnZM7WptrNVYk%3D&reserved=0 Htmlized: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Ftools.ietf.org%2Fhtml%2Fdraft-tiloca-ace-group-oscore-profile-05&data=04%7C01%7Cmarco.tiloca%40ri.se%7C2839d382f59a40707f0d08d8d754802b%7C5a9809cf0bcb413a838a09ecc40cc9e8%7C0%7C0%7C637496105234024291%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=6mUaQG2nitER63lfFzQNNwjoVl0adYm4XsKCtN04m1A%3D&reserved=0 Diff: https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ietf.org%2Frfcdiff%3Furl2%3Ddraft-tiloca-ace-group-oscore-profile-05&data=04%7C01%7Cmarco.tiloca%40ri.se%7C2839d382f59a40707f0d08d8d754802b%7C5a9809cf0bcb413a838a09ecc40cc9e8%7C0%7C0%7C637496105234029271%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=o7EHjgnMixM7zaCjr%2FVPzOJNvXq5e5F04m%2F4Ik4UqxY%3D&reserved=0
Abstract: This document specifies a profile for the Authentication and Authorization for Constrained Environments (ACE) framework. The profile uses Group OSCORE to provide communication security between a Client and a (set of) Resource Server(s) as members of an OSCORE Group. The profile securely binds an OAuth 2.0 Access Token with the public key of the Client associated to the signing private key used in the OSCORE group. The profile uses Group OSCORE to achieve server authentication, as well as proof-of-possession for the Client's public key. Also, it provides proof of the Client's membership to the correct OSCORE group, by binding the Access Token to information from the Group OSCORE Security Context, thus allowing the Resource Server(s) to verify the Client's membership upon receiving a message protected with Group OSCORE from the Client. Please note that it may take a couple of minutes from the time of submission until the htmlized version and diff are available at tools.ietf.org. The IETF Secretariat
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