Monthly Archives: December 2021

Use calendar, mailbox settings and Teams presence in ASP.NET Core hosted Blazor WASM with Microsoft Graph

December 20, 2021 · by · in .NET, .NET Core, ASP.NET Core, Azure, Azure AD, Azure B2C · 7 Comments

This article shows how to use Microsoft Graph with delegated permissions in a Blazor WASM ASP.NET Core hosted application. The application uses Microsoft.Identity.Web and the BFF architecture to authenticate against Azure AD. All security logic is implemented in the trusted backend. Microsoft Graph is used to access mailbox settings, teams presence and a users calendar. […]

Implement Compound Proof BBS+ verifiable credentials using ASP.NET Core and MATTR

December 13, 2021 · by · in .NET Core, ASP.NET Core, OAuth2, Security, Self Sovereign Identity · 5 Comments

This article shows how Zero Knowledge Proofs BBS+ verifiable credentials can be used to verify credential subject data from two separate verifiable credentials implemented in ASP.NET Core and MATTR. The ZKP BBS+ verifiable credentials are issued and stored on a digital wallet using a Self-Issued Identity Provider (SIOP) and OpenID Connect. A compound proof presentation […]

Blazor WASM hosted in ASP.NET Core templates with Azure B2C and Azure AD authentication using Backend for Frontend (BFF)

December 6, 2021 · by · in .NET, App Service, Azure, Azure AD, Azure B2C, dotnet · 12 Comments

I have implemented many Blazor WASM ASP.NET Core hosted applications now for both Azure AD and Azure B2C authentication. I always implement security for this type of application now using the Backend for Frontend (BFF) security architecture and can remove the tokens from the client. This is also what I recommend. At present, no Microsoft […]