CTAB Call Tuesday May 17, 2022


  • David Bantz, University of Alaska (chair)  
  • Jon Miner, University of Wisc - Madison (co-chair) 
  • Pål Axelsson, SUNET    
  • Richard Frovarp,  North Dakota State 
  • Eric Goodman, UCOP - InCommon TAC Representative to CTAB  
  • Andy Morgan, Oregon State University 
  • Rick Wagner, UCSD 
  • Chris Whalen, Research Data and Communication Technologies 
  • Jule Ziegler,  Leibniz Supercomputing Centre  
  • Robert Zybeck, Portland Community College  
  • Johnny Lasker, Internet2  
  • Kevin Morooney, Internet2   
  • Ann West, Internet2   
  • Albert Wu, Internet2 
  • Emily Eisbruch, Internet2 



  • Tom Barton, Internet2, ex-officio regrets
  • Sarah Borland, University of Nebraska regrets
  • Ercan Elibol, Florida Polytech Institute
  • Meshna Koren, Elsevier
  • Dave Robinson, Grinnell College in Iowa, InCommon Steering Rep, ex-officio


  • CTAB liaison to CACTI
    • Suggestion to have a CTAB liaison to CACTI  (Community Architecture Committee for Trust and Identity) and vice versa
    • CTAB and InCommon TAC have had liaisons to each other for several years,  but CTAB has never had a liaison relationship with CACTI  
    •   There are 3 committees related to InCommon Federation
      •           InCommon Steering
      •           InCommon TAC
      •            CTAB
    • CACTI - Top level architecture “steering” group.
      •   informs cross service/software work.  Grew out of the older “MACE” group. 
      • CACTI  meets biweekly on Tuesdays at 11am ET.
      • Thanks to Richard Frovarp who volunteered to be the CTAB Liaison to CACTI
      • Richard’s “term” as liaison to CACTI will be until the end of 2022.

Working Group Updates Process

  • Streamlining regularly occurring working group updates - follow TAC’s convention to send updates via email? 
  • Should liaisons put an update in the CTAB scribing doc, instead of having email updates or verbal updates?  
  • DECISION:  liaisons will put updates into the CTAB scribing doc.

Working Group Updates

  • InCommon TAC 
    • Discussion focused on Digital Wallets:
    •      digital format for claims about a person that are under the control of the person
    •       some implementations are based on block chain; unclear whether all are

    • Discussion about low level of engagement with Wallets and Federations workgroup 
    • Digital Wallets Working group will focus on what place the wallets technology have in the higher ed federation landscape/trust fabric.
      Draft charter: https://docs.google.com/document/d/1W_JXZrvgxGCMTdRbn5Ya5gh0LRgZGFcwtX2UVtr5iMk/edit#heading=h.4w7uimsy6s53

  • REFEDS Assurance Working Group
    • Discussed relationship w OPENID Connect
    • OIDC profile for research and education sector
    • ACR and AMR claims used for authentication assurance
    • Proposal for new ASR claim for identity assurance

    • Tom, Richard and Andy met on May 16, 2022.
    • Made new edits to the draft document. Draft is not yet polished
    • Addressing issues around resources required and workload.
    • Discussion around how to handle a substantial change in SSL labs grading
    • How to hand the “hump” of non compliant participants for BE v2

Quarterly Chairs meeting (Chairs of TAC, CACTI, CTAB, with Nicole Roy and Albert)

  • Reflections from cross-committee chairs quarterly meeting  
    • Increased collaboration between CACTI and CTAB
  • Discussed strategies for communicating  the value of multilateral InCommon federation.
  • There are some issues around supporting Shib
  • Important to understand federation in a more nuanced way
  • Some participants, including some major research institutions, are moving towards a commercial solution
  • Some orgs are maintaining federation for a few research services, such as NIH
  • Based on a recent email thread, some orgs may move away from seeing InCommon as the solution for streamlined access to SaaS services.
  • Hosted solutions for brokering new orgs into InCommon could be seen as a gift
  • Kevin: what is the utility of multilateral? 
    • Publish metadata once, use it many times.
    • With SPs rising and falling within a short period of time, discovery can present a challenge and needs a solution like multilateralism.  
    • Sometimes bilateral SAML relationships are set up and they can be difficult to manage.
  •  Perhaps we should start to highlight the org to org use case more than, in addition to, the enterprise use case. Need more data
  • There is an opportunity, not just a threat from the current trends
  • David: in addition to research projects, another use case requiring the same kind of multilateral infrastructure is for scholarship and journal access
  • David will share his notes from this Chairs meeting with CTAB
  • Please inform David if you would like to join a future Chairs meeting. 
    • Andy would like to join in the future.

InCommon Operations

  • Looking at providing more data, including trend reports 

CTAB Work Plan

  • AI: Review/endorse CTAB Work Plan on wiki before publishing. 
  •    The CTAB work plan is not public yet. Please “sign off’ on this within 2 weeks
  •     If Albert does not hear objections, this work plan will be opened up

InCommon Steering Update

  • Kevin notes that In the InCommon Steering agenda there is an “around the horn” meeting for early or late fall.
  • Going around all the advisory committees and asking them to share what they are doing.
  • A review of all the committee work for Steering.

BE2 status update and next steps (Albert) (Did not discuss on this call)

Next CTAB call: Tuesday, May 31, 2022

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