Tag Archives: Identity

Using Key Vault certificates with Microsoft.Identity.Web and ASP.NET Core applications

This post shows how Azure Key Vault certificates can be used with Microsoft.Identity.Web in an ASP.NET Core application which requires a downstream “access_as_user” API. The Azure AD App Registrations requires a certificate instead of a client secret. Code: https://github.com/damienbod/AzureADAuthRazorUiServiceApiCertificate Posts in this series Implement Azure AD Client credentials flow using Client Certificates for service APIs […]

Encrypting texts for an Identity in ASP.NET Core Razor Pages using AES and RSA

The article shows how encrypted texts can be created for specific users in an ASP.NET Core Razor page application. Symmetric encryption is used to encrypt the text or the payload. Asymmetric encryption is used to encrypt the AES key and the IV of the symmetric encryptions. Each ASP.NET Core Identity has an associated X509Certificate2 with […]

Requiring MFA for Admin Pages in an ASP.NET Core Identity application

This article shows how MFA could be forced on users to access sensitive pages within an ASP.NET Core Identity application. This could be useful for applications where different levels of access exist for the different identities. For example, users might be able to view the profile data using a password login, but an administrator would […]

Force ASP.NET Core OpenID Connect client to require MFA

This article shows how an ASP.NET Core Razor Page application which uses OpenID Connect to sign in, can require that users have authenticated using MFA (multi factor authentication). Code: https://github.com/damienbod/AspNetCoreHybridFlowWithApi Blogs in this series Force ASP.NET Core OpenID Connect client to require MFA Send MFA signin requirement to OpenID Connect server using ASP.NET Core Identity […]

WPF Azure AD signin with Sharepoint Online API call using Graph API

This article shows how a native WPF application could authenticate and authorize using an Azure Active Directory App Registration and then upload and download files in Sharepoint Online. The Graph API is used to access Sharepoint. Other Sharepoint libraries will NOT work if using an Azure AD signin. Code: https://github.com/damienbod/WpfAzureADSharepointOnlineGraphApi Setup the Azure Active Directory […]

User claims in ASP.NET Core using OpenID Connect Authentication

This article shows two possible ways of getting user claims in an ASP.NET Core application which uses an IdentityServer4 service. Both ways have advantages and require setting different code configurations in both applications. Code: https://github.com/damienbod/AspNetCoreHybridFlowWithApi To use OpenID Connect in an ASP.NET Core application, the Microsoft.AspNetCore.Authentication.OpenIdConnect package can be used. This needs to be added […]

Adding FIDO2 Passwordless authentication to an ASP.NET Core Identity App

This article shows how FIDO2 WebAuthn could be used for a passwordless sign in integrated into an ASP.NET Core Identity application. The FIDO2 WebAuthn is implemented using the fido2-net-lib Nuget package, and demo code created by Anders Åberg. The application is implemented using ASP.NET Core 3.0 with Identity. For information about FIDO2 and WebAuthn, please […]

ASP.NET Core Identity with FIDO2 WebAuthn MFA

This article shows how FIDO2 WebAuthn could be used as 2FA and integrated into an ASP.NET Core Identity application. The FIDO2 WebAuthn is implemented using the fido2-net-lib Nuget package, and demo code created by Anders Åberg. The application is implemented using ASP.NET Core 3.0 with Identity. For information about Fido2 and WebAuthn, please refer to […]

Implementing User Management with ASP.NET Core Identity and custom claims

The article shows how to implement user management for an ASP.NET Core application using ASP.NET Core Identity. The application uses custom claims, which need to be added to the user identity after a successful login, and then an ASP.NET Core policy is used to authorize the identity. Code: https://github.com/damienbod/AspNetCoreAngularSignalRSecurity History 2020-03-21 updated packages, fixed Admin […]

Disabling parts of ASP.NET Core Identity

This article shows how to disable parts of ASP.NET Core Identity in a Web Application. In the ASP.NET Core Identity, the Identiy UI is deployed as part of the NuGet package. So per default everything is enabled and you have to opt-out, unlike the older versions which was opt-in. If you are not careful, this […]