Igor, I was unable to make the meeting, but how does your POCOP approach differ from Macaroons and the caveat system there? — Justin
On Nov 19, 2021, at 11:15 AM, Igor Zboran <izboran@gmail.com> wrote:
Hi all,
I'd like to give more context/information.
"POCOP Tokens" is my personal research activity aimed at exploring the possibility of using nested, chained HMAC constructions in authorization processes. Some nested, chained HMACs have an interesting feature, they don't need to share keys between "nests" to generate the verifiable MAC. Such constructions address, for example, a scenario when one resource server needs to access another resource server in order to fulfill the client request that uses a self-issued token.
Your comments are valuable, thanks for the feedback, I really appreciate it.
-Igor
On Thu, Nov 18, 2021 at 8:12 PM Alec Laws <malcolm.laws@gmail.com <mailto:malcolm.laws@gmail.com>> wrote: https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-11-18 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-11-18>
UMA telecon 2021-11-18 Date and Time Primary-week Thursdays 06:30am PT; Secondary-week Thursdays 10:00am PT Screenshare and dial-in: https://zoom.us/j/99487814311?pwd=dTAvZi9uN0ZmeXJReWRrc1Zycm5KZz09 <https://zoom.us/j/99487814311?pwd=dTAvZi9uN0ZmeXJReWRrc1Zycm5KZz09> United States: +1 (224) 501-3316, Access Code: 485-071-053 See UMA calendar for additional details: http://kantarainitiative.org/confluence/display/uma/Calendar <http://kantarainitiative.org/confluence/display/uma/Calendar> Agenda Approve minutes of UMA telecon 2021-09-09 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-09>, UMA telecon 2021-09-16 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-16>, UMA telecon 2021-09-23 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-23>, UMA telecon 2021-09-30 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-30>, UMA telecon 2021-10-14 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-10-14>, UMA telecon 2021-10-21 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-10-21>, UMA telecon 2021-10-28 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-10-28>, UMA telecon 2021-11-04 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-11-04>, UMA telecon 2021-11-11 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-11-11> Delegation Use Cases Proof of Chain of Possession (POCOP) Tokens AOB Minutes Roll call Quorum: No Approve minutes Approve minutes of UMA telecon 2021-09-09 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-09>, UMA telecon 2021-09-16 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-16>, UMA telecon 2021-09-23 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-23>, UMA telecon 2021-09-30 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-09-30>, UMA telecon 2021-10-14 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-10-14>, UMA telecon 2021-10-21 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-10-21>, UMA telecon 2021-10-28 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-10-28>, UMA telecon 2021-11-04 <https://kantarainitiative.org/confluence/display/uma/UMA+telecon+2021-11-04> Deferred
The Kantara All members meeting is Dec 8th, 11-1230ET (it's virtual, link TBD)
Delegation Use Cases Reviewed more pp2pi <https://www.drummondgroup.com/pp2pi/> use-cases, broken down by objective and mapped to whther uma or uma delegation can meet the goal Will continue this discussion next week
payer insurance codes are often opaque to the patient/covered person
Proof of Chain of Possession (POCOP) Tokens https://github.com/uma-email/poc <https://github.com/uma-email/poc> A client can use any IDToken with any UMA ticket. The Correlated Authorization mechanism ensures that there is some open UMA transactional context included in any pushed ID claims What is the threat that Proof of Possession <https://datatracker.ietf.org/doc/html/draft-ietf-oauth-dpop-04> (or mTLS) doens't address that requires the "chronological tamper-resistant record"?
Report on FHIR Vulns reviewed some initial diagrams for this: https://docs.google.com/presentation/d/1aDTD6nv5vza8gDsSRGV6X5tzRoQdIv5V9aU8... <https://docs.google.com/presentation/d/1aDTD6nv5vza8gDsSRGV6X5tzRoQdIv5V9aU8o3Z632A/edit#slide=id.p> FHIR itself is simply the data model FHIR had the author refine their statement that it was 'FHIR Implmentations' that had the vulnerabilities SMART on FHIR is the HL7 'approved' authorization strategy UDAP → artifacts that needs to exist from a trust framework to support DCR/wide-access HEART → profiles of OAuth/UMA for SMARTonFHIR scopes
AOB We are planning a 3 hour working session on December 9th, we will use extend the normal call from 930-1230ET Want to make progress on some of the in-progress docs, have them in a consistent state Eve, Nancy, Alec, Andi If you're up to attend, please email Alec, or leave a comment on these minutes
Topic Candidates (from previous telcons) Delegation and Guardianship Outcome of user stories discussion PDP architecture includes the concept of governance registry/discovery TOIP/SSI are starting to define this ecosystem function ANCR records update Privacy as Expected/ANCR update : 2/3 weeks out (Sal?)
Attendees As of October 26, 2020, quorum <http://kantarainitiative.org/confluence/display/uma/Participant+Roster> is 5 of 9. (Michael, Domenico, Peter, Sal, Thomas, Andi, Alec, Eve, Steve) Voting: Steve Alec Non-voting participants: Scott G Scott F Regrets: Sal Nancy Eve _______________________________________________ WG-UMA mailing list WG-UMA@kantarainitiative.org <mailto:WG-UMA@kantarainitiative.org> https://kantarainitiative.org/mailman/listinfo/wg-uma <https://kantarainitiative.org/mailman/listinfo/wg-uma> _______________________________________________ WG-UMA mailing list WG-UMA@kantarainitiative.org https://kantarainitiative.org/mailman/listinfo/wg-uma