Lessons learned from implementing Native OIDC from scratch (matrix-conf-2025)

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Are we OIDC yet ? YES ! We are ! OpenID Connect evolved as the one and only identity standard in the modern web. With MSC3861, the [matrix] ecosystem is finally moving to OIDC as the authentication standard amongst clients and homeservers. Out of curiosity, I started implementing a native OIDC implementation from scratch : no OAuth 2.0 library, no Ruma ; just the [matrix] Dart SDK, an HTTP client and the MSC in front of me. This talk will be about the lessons learned. Licensed to the public under https://creativecommons.org/licenses/by-sa/4.0/ about this event: https://cfp.2025.matrix.org/matrix-conf-2025/talk/XLV7PZ/