This article shows how to onboard different clients or organizations in an ASP.NET Core application to use separated Azure blob containers with controlled access using security groups and RBAC applied roles. Each user in a client group can only access a single blob storage and has no access to blob containers belonging to different clients. […]
This article shows how an ASP.NET Core application can control the write access to an Azure blob storage container using an application app registration. Microsoft Entra ID is used to control the user access and to implement the authentication of the web application. Code: https://github.com/damienbod/AspNetCoreEntraIdBlobStorage Blogs in this series The solution provides a secure upload […]
OLD, please refer to the blogs in the github repo. This article shows how to use a CSP nonce in a Blazor Web application using the InteractiveServer server render mode. Using a CSP nonce is a great way to protect web applications against XSS attacks and other such Javascript vulnerabilities. Code: https://github.com/damienbod/BlazorServerOidc Notes The code […]
This article shows how to implement a secure upload and a secure download in ASP.NET Core using Azure blob storage. The application uses Microsoft Entra ID for authentication and also for access to the Azure Blob storage container. Code: https://github.com/damienbod/AspNetCoreEntraIdBlobStorage Blogs in this series Security architecture The application is setup to store the file uploads […]
This article shows how to implement an ASP.NET Core Blazor Web application using Microsoft Entra ID for authentication. Microsoft.Identity.Web is used to implement the Microsoft Entra ID OpenID Connect client. Code: https://github.com/damienbod/Hostedblazor8MeID Note: I based this implementation on the example provided by Tomás López Rodríguez and adapted it. Setup The Blazor Web application is an […]
This article shows how to migrate a Blazor server application to a Blazor Web application. The migration used the ASP.NET Core migration documentation, but this was not complete and a few extra steps were required. The starting point was a Blazor Server application secured using OpenID Connect for authentication. The target system is a Blazor […]
This article shows how to secure a Blazor Server application. The application implements an OpenID Connect confidential client with PKCE using .NET 8 and configures the security headers as best possible for the Blazor Server application. OpenIddict is used to implement the identity provider and the OpenID Connect server. Code: https://github.com/damienbod/BlazorServerOidc OpenID Connect flow In […]
This article shows how to setup and sign git commits on Windows for Github. Most of this is already documented on the Github docs, but I ran into trouble when using this with git Extensions on a windows host. My commits could not be signed until I set the home system variable on the windows […]
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 […]
This article shows how an ASP.NET Core application can be authenticated using OpenID Connect and OAuth 2.0 Pushed Authorization Requests (PAR) RFC 9126. The OpenID Connect server is implemented using Duende IdentityServer. The Razor Page ASP.NET Core application authenticates using an OpenID Connect confidential client with PKCE and using the OAuth PAR extension. By using […]
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