Monthly Archives: June 2025

Experimental alternative flow for OAuth First-Party Applications

June 10, 2025 · by · in .NET, .NET Core, ASP.NET Core, OAuth2, Security · 1 Comment

This post looks at an alternative way of implementing a native app authentication and authorization. At present, a web browser is used to implement authentication of native applications when using OAuth and OpenID Connect. The alternative approach implemented in the post is based on the OAuth 2.0 for First-Party Applications draft and adapted to be […]

Handling OpenID Connect error events in ASP.NET Core

June 2, 2025 · by · in .NET, .NET Core, ASP.NET Core, dotnet, OAuth2, Security · 1 Comment

ASP.NET Core provides great extension points for handling OpenID Connect error events. This blog looks at implementing error handling in an ASP.NET Core application implemented using ASP.NET Core Identity. Code: https://github.com/damienbod/IdentityExternalErrorHandling Setup The application uses OpenID Connect to implement the authentication of the user identities. This implements a standard OpenID Connect flow and uses Microsoft […]