<div dir="ltr"><div class="gmail_default" style="font-family:trebuchet ms,sans-serif">Dear FAPI WG</div><div class="gmail_default" style="font-family:trebuchet ms,sans-serif"><p style="font-family:Arial,Helvetica,sans-serif">Please see the below update and presentation from the team at Stuttgart university.</p><p style="font-family:Arial,Helvetica,sans-serif">We are discussing this on the current FAPI Atlantic call now. If anyone has any feedback on the work so far, please do let the WG Chairs know.</p><p style="font-family:Arial,Helvetica,sans-serif">Thank you</p><p style="font-family:Arial,Helvetica,sans-serif">Dave Tonge</p><p style="font-family:Arial,Helvetica,sans-serif">FAPI WG Co-Chair<br>OpenID Foundation</p><p style="font-family:Arial,Helvetica,sans-serif"><br></p><p style="font-family:Arial,Helvetica,sans-serif">Building on the recent security analysis of the FAPI 2.0 Security Profile, the formal model of FAPI 2.0 is extended by FAPI 2.0 Message Signing, Dynamic Client Registration & Management, as well as FAPI-CIBA (in the context of FAPI 2.0). To this end, a formal model of the aforementioned components has been developed and (formal) security properties have been defined, in particular for the new non-repudiation requirements of FAPI 2.0 Message Signing. Note that none of these properties has been proven yet.<br></p><p style="font-family:Arial,Helvetica,sans-serif">The model is built such that all of the modeled components can "run" in parallel, allowing, e.g., for grants with signed PARs and grants with unsigned PARs within the same ecosystem, and even between the same parties, to interleave with each other.<br></p><br class="gmail-Apple-interchange-newline"></div></div>
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