Sometimes Angular applications are required to authenticate against multiple identity providers. This blog post shows how to implement an Angular SPA which authenticates using Auth0 for one identity provider and also IdentityServer4 from Duende software as the second. The SPA can logout from both of the identity providers individually and also revoke the refresh token […]

This article shows how to implement an ASP.NET Core Razor page to authenticate against Azure B2C and use Web APIs from a second ASP.NET Core application which are also protected using Azure B2C App registrations. Azure B2C uses the signin, signup user flow and allows identities to authenticate using an Azure AD single tenant. Two […]

This post shows how Azure Service bus subscription for topics or consumers for a queue, or can be used inside an ASP.NET Core application. The Azure Service Bus client listens to events and needs to be started, stopped and registered to the topic to receive messages. An IHostedService is used for this. Code: Posts […]

The article shows how an ASP.NET Core application could implement a sign in and a sign out with two different Azure App registrations which could also be implemented using separate identity providers (tenants). The user of the application can decide to authenticate against either one of the Azure AD clients. The clients can also be […]

This article shows how integration tests could be implemented for an ASP.NET Core application which uses EF Core and Azure Cosmos. The database tests can be run locally or in an Azure DevOps build using the Azure Cosmos emulator. XUnit is used to implement the tests. Code: EF Core is used to the access […]

This article shows how Zero Knowledge Proofs ZKP verifiable credentials can be used to verify a persons vaccination data 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 Open ID Connect. The data can then be used to […]

This article shows how to implement an Angular single page application with an ASP.NET Core API and secured using the Open ID Connect code flow with PKCE and OAuth JWT Bearer tokens to protect the API. The identity provider is implemented using Auth0. The flow uses refresh tokens to renew the SPA session and the […]

This article shows how to secure and use different APIs in an ASP.NET Core API which support OAuth access tokens from multiple identity providers. Access tokens from Azure AD and from Auth0 can be be used to access data from the service. Each API only supports a specific token from the specific identity provider. Microsoft.Identity.Web […]

This article shows how use verifiable credentials stored on a digital wallet to verify a digital identity and use in an application. For this to work, a trust needs to exist between the verifiable credential issuer and the application which requires the verifiable credentials to verify. A blockchain decentralized database is used and MATTR is […]

This article shows how to create and issue verifiable credentials using MATTR and an ASP.NET Core. The ASP.NET Core application allows an admin user to create an OIDC credential issuer using the MATTR service. The credentials are displayed in an ASP.NET Core Razor Page web UI as a QR code for the users of the […]