Category .NET Core
Securing an ASP.NET Core API which uses multiple access tokens
This post shows how an ASP.NET Core API can authorize API calls which use different access tokens from different identity providers or different access tokens from the same identity provider but created for different clients and containing different claims. The access tokens are validated using JWT Bearer authentication as well as an authorization policy which […]
Using Microsoft Graph API delegated clients in ASP.NET Core
This post shows how Microsoft Graph API can be used in both ASP.NET Core UI web applications and also ASP.NET Core APIs for delegated identity flows. The ASP.NET Core applications are secured using Microsoft.Identity.Web. In the API project, the Graph API client is used in a delegated flow with user access tokens getting an access […]
Implement a Web APP and an ASP.NET Core Secure API using Microsoft Entra ID which delegates to a second API
This article shows how an ASP.NET Core Web application can authenticate and access a downstream API using user access tokens and delegate to another API in Microsoft Entra ID also using user access tokens. Microsoft.Identity.Web is used in all three applications to acquire the tokens afor the Web API and the access tokens for the […]
Implement a Blazor full text search using Azure Cognitive Search
This article shows how to implement a full text search in Blazor using Azure Cognitive Search. The search results are returned using paging and the search index can be created, deleted from a Blazor application. Code: https://github.com/damienbod/AspNetCoreAzureSearch Posts in this series Implement a full text search using Azure Cognitive Search in ASP.NET Core Using Azure […]
Using Azure Cognitive Search Suggesters in ASP.NET Core and Autocomplete
This post shows how to implement an autocomplete in an ASP.NET Core Razor Page using Azure Cognitive Search Suggesters. Code: https://github.com/damienbod/AspNetCoreAzureSearch Posts in this series Implement a full text search using Azure Cognitive Search in ASP.NET Core Using Azure Cognitive Search Suggesters in ASP.NET Core and Autocomplete Implement a Blazor full text search using Azure […]
Using encrypted access tokens in Azure with Microsoft.Identity.Web and Azure App registrations
This post shows how to use encrypted access tokens with Microsoft Entra ID App registrations using Microsoft.Identity.Web. By using encrypted access tokens, only applications with access to the private key can decrypt the tokens. When using encrypted tokens, you can prevent access tokens data being used or read by such tools as https://jwt.ms or https://jwt.io […]
Implement a full text search using Azure Cognitive Search in ASP.NET Core
This article shows how to implement a full text search in ASP.NET Core using Azure Cognitive Search. The search results are returned using paging and the search index can be created, deleted from an ASP.NET Core Razor Page UI. Code: https://github.com/damienbod/AspNetCoreAzureSearch Posts in this series Implement a full text search using Azure Cognitive Search in […]
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 Microsoft Entra ID App Registrations requires a certificate instead of a client secret. Code: https://github.com/damienbod/MicrosoftEntraIDAuthMicrosoftIdentityWeb Posts in this series History 2023-11-28 Updated to .NET 8 Creating the Key Vault certificates […]
Securing Azure Functions using ME-ID JWT Bearer token authentication for user access tokens
This post shows how to implement OAuth security for an Azure Function using user-access JWT Bearer tokens created using Microsoft Entra ID and App registrations. A client web application implemented in ASP.NET Core is used to authenticate and the access token created for the identity is used to access the API implemented using Azure Functions. […]
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 […]
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