Category Security
Securing a MudBlazor UI web application using security headers and Microsoft Entra ID
This article shows how a Blazor application can be implemented in a secure way using MudBlazor UI components and Microsoft Entra ID as an identity provider. The MudBlazor UI components adds some inline styles and requires a specific CSP setup due to this and the Blazor WASM script requirements. Code: https://github.com/damienbod/MicrosoftEntraIDMudBlazor Setup The application is […]
Authentication with multiple identity providers in ASP.NET Core
This article shows how to implement authentication in ASP.NET Core using multiple identity providers or secure token servers. When using multiple identity providers, the authentication flows need to be separated per scheme for the sign-in flow and the sign-out flow. The claims are different and would require mapping logic depending on the authorization logic of […]
Fix missing tokens when using downstream APIs and Microsoft Identity in ASP.NET Core
This article shows how a secure ASP.NET Core application can use Microsoft Entra ID downstream APIs and an in-memory cache. When using in-memory cache and after restarting an application, the tokens are missing for a value session stored in the cookie. The application needs to recover. Code: https://github.com/damienbod/bff-aspnetcore-angular OpenID Connect client setup The ASP.NET Core […]
Issue and verify BBS+ verifiable credentials using ASP.NET Core and trinsic.id
This article shows how to implement identity verification in a solution using ASP.NET Core and trinsic.id, built using an id-tech solution based on self sovereign identity principals. The credential issuer uses OpenID Connect to authenticate, implemented using Microsoft Entra ID. The edge or web wallet authenticates using trinsic.id based on a single factor email code. […]
Secure Angular application using OpenIddict and ASP.NET Core with BFF
The article shows how an Angular nx Standalone UI hosted in an ASP.NET Core application can be secured using cookies. OpenIddict is used as the identity provider. The trusted application is protected using the Open ID Connect code flow with a secret and using PKCE. The API calls are protected using the secure cookie and anti-forgery […]
Secure Angular application using Auth0 and ASP.NET Core with BFF
The article shows how an Angular nx Standalone UI hosted in an ASP.NET Core application can be secured using cookies. Auth0 is used as the identity provider. The trusted application is protected using the Open ID Connect code flow with a secret and using PKCE. The API calls are protected using the secure cookie and anti-forgery tokens […]
Use multiple Microsoft Entra Verified ID credentials in a verification presentation
This post shows how a Microsoft Entra ID verified employee credential can be used together with a self attestation credential to unlock a door. Using this, a person can prove they know a code and prove their employee status. Code: https://github.com/swiss-ssi-group/EntraEmployeeUnlockDoor Get your Verified Employee credential To use this app, the Microsoft Entra employee credential […]
Securing APIs using ASP.NET Core and OAuth 2.0 DPoP
This article shows how an ASP.NET Core application can access an ASP.NET Core API using OAuth Demonstrating Proof-of-Possession (DPoP). This is a really powerful security enhancement which is relatively easy to support. The access tokens should only be used for what the access tokens are intended for. OAuth DPoP helps force this. This solution was […]
Trust phishing resistant MFA for cross tenant users
This article shows how to force phishing resistant authentication for external B2B users using a cross tenant trust. The external users are from a separate tenant and the local tenant needs to trust the multiple factor authentication (MFA) from the other known tenants. This prevents the user having to authenticate again and setup more MFA. […]
Application security context models
This article looks at a new concept for creating application security context models for modern solutions using best practice security. By using security context models in projects, a qualitative and secure authentication solution can be produced quicker and more efficient. At present, too many solution architects try to patch the security architecture after the application […]
Software Engineering 