Technical Challenges of OpenID FAPI JWT and Open Banking
The worst thing a specification can do is not specify something The recent retirement of OB Legacy certificates has caused trouble in the Open Banking UK world. With a hard deadline of June 30, 2021, some institutions were still working in the last three weeks to complete the change.  After having finished their transfer, others turned off the old certificate support weeks ago, essentially cutting off any integration that hadn’t been updated. However, the remaining number struggled with the lack of specs for handling secure APIs and communicating information in a standardized way. Some Background – OpenID FAPI JWT Using Financial-grade API (FAPI) [...]