Category dotnet

Using HTTP Request Routes, Request Body, and Query string parameters for Authorization in ASP.NET Core

This post shows how HTTP route parameters, a HTTP request body or HTTP request query string parameters can be used for authorization in ASP.NET Core. Code: https://github.com/damienbod/AspNetCoreWindowsAuth Authorization using ASP.NET Core Route parameters An AuthorizationHandler can be used to implement authorization logic in ASP.NET Core. The handler can authorize HTTP requests using a route parameter […]

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 […]

Building and securing an ASP.NET Core API with a hosted Vue.js UI

This article shows how Vue.js can be used together with ASP.NET Core 3 in a single project. The Vue.js application is built using the Vue.js CLI and built to the wwwroot of the ASP.NET Core application. The ASP.NET Core application is used to implement the APIs consumed by the Vue.js UI. The application is secured […]

Using Azure Service Bus Topics Subscription Filters in ASP.NET Core

This article shows how to implement Azure Service Bus filters for topic subscriptions used in an ASP.NET Core API application. The application uses the Microsoft.Azure.ServiceBus NuGet package for all the Azure Service Bus client logic. Code: https://github.com/damienbod/AspNetCoreServiceBus Posts in this series: Using Azure Service Bus Queues with ASP.NET Core Services Using Azure Service Bus Topics […]

gRPC Bi-directional streaming with Razor Pages and a Hosted Service gRPC client

This article shows how a Bi-directional streaming gRPC service could be implemented using an .NET Core Hosted Service as a gRPC client, and a Razor Page to send Bi-directional streaming messages to the servers connected clients. Code: https://github.com/damienbod/Secure_gRpc Posts in this series Security Experiments with gRPC and ASP.NET Core 3.0 Running Razor Pages and a […]

Securing a Vue.js app using OpenID Connect Code Flow with PKCE and IdentityServer4

This article shows how to setup a Vue.js SPA application to authenticate and authorize using OpenID Connect Code flow with PKCE. This is good solution when implementing SPA apps requesting data from APIs on separate domains. The oidc-client-js npm package is used to implement the client side authentication logic and validation logic. IdentityServer4 and ASP.NET […]

Creating PDF files in ASP.NET Core

This article shows how to create PDF files in ASP.NET Core. I decided I wanted to use PDFSharp, because I like this library, but no NuGet packages exist for .NET Standard 2.0. YetaWF created a port for this, which was used 1:1 in this example, without changes. It would be great to see PDFSharp as […]