Tag Archives: OIDC
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 […]
Provision Azure IoT Hub devices using DPS and X.509 certificates in ASP.NET Core
This article shows how to provision Azure IoT hub devices using Azure IoT hub device provisioning services (DPS) and ASP.NET Core. The devices are setup using chained certificates created using .NET Core and managed in the web application. The data is persisted in a database using EF Core and the certificates are generated using the […]
Use multiple identity providers from a Blazor WASM ASP.NET Core App secured using BFF
This post shows how to implement a Blazor WASM UI hosted in an ASP.NET Core application using multiple identity providers to authenticate. Two confidential OpenID Connect code flow clients with PKCE are used to implement the Blazor authentication. The Blazor WASM and the ASP.NET Core application are a single security context. This is implemented using […]
Azure AD Multi tenant Azure App registration consent
This article looks at Azure Active directory and consent with multi-tenant Azure App registrations. Consent works different depending on the user type, the tenant policies and the required permissions. It is sometimes hard to understand why a user cannot login or where the consent has to be given for a specific Azure App registration which […]
Switch tenants in an ASP.NET Core app using Azure AD with multi tenants
This article shows how to switch between tenants in an ASP.NET Core multi-tenant application using a multi-tenant Azure App registration to implement the identity provider. Azure roles are added to the Azure App registration and this can be used in the separate enterprise applications created from the multi-tenant Azure App registration to assign users and […]
Implement the On Behalf Of flow between an Azure AD protected API and an API protected using OpenIddict
This article shows how to implement the On Behalf Of flow between two APIs, one using Azure AD to authorize the HTTP requests and a second API protected using OpenIddict. The Azure AD protected API uses the On Behalf Of flow (OBO) to get a new OpenIddict delegated access token using the AAD delegated access […]
ASP.NET Core Api Auth with multiple Identity Providers
This article shows how an ASP.NET Core API can be secured using multiple access tokens from different identity providers. ASP.NET Core schemes and policies can be used to set this up. Code: https://github.com/damienbod/AspNetCoreApiAuthMultiIdentityProvider History 2023-04-29 Updated packages and revert to default JWT authorization packages due to errors on update. The ASP.NET Core API has a […]
Add Fido2 MFA to an OpenIddict identity provider using ASP.NET Core Identity
This article shows how to add Fido2 multi-factor authentication to an OpenID Connect identity provider using OpenIddict and ASP.NET Core Identity. OpenIddict implements the OpenID Connect standards and ASP.NET Core Identity is used for the user accounting and persistence of the identities. Code: https://github.com/damienbod/AspNetCoreOpeniddict I began by creating an OpenIddict web application using ASP.NET Core […]
Implement Azure AD Continuous Access (CA) standalone with Blazor ASP.NET Core
This post shows how to force an Azure AD policy using Azure AD Continuous Access (CA) in an ASP.NET Core Blazor application. An authentication context is used to require MFA. The “acrs” claim in the id_token is used to validate whether or not an Azure AD CAE policy has been fulfilled. If the claim is […]
Onboarding new users in an ASP.NET Core application using Azure B2C
This article shows how to onboard new users into your ASP.NET Core application using Azure B2C as the identity provider and the account management. The software has application specific persisted user data and this user data needs to be connected to the identity data from the corresponding user in Azure B2C. Code https://github.com/damienbod/azureb2c-fed-azuread User Case […]
Software Engineering 