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 […]
This post looks at symmetric and asymmetric encryption and how this could be implemented in .NET Core. Symmetric encryption is fast and can encrypt or decrypt large amounts of text, streams or files but requires a shared key. Asymmetric encryption can be used without shared a key, but can only encrypt or decrypt small texts […]
This article shows how to secure Azure Functions using API Keys. This is useful, if you have no control over the API client implementation, the client code base cannot be easily changed or the client is not Azure hosted. This should only be used with trusted clients and is for machine to machine usage. Code: […]
Azure Durable Functions provides a rich set of Error Handling APIs. This post shows how Activities or Sub-Orchestrations can be re-run with the different retry options. Activities in a workflow can call an API or run a code flow which might fail due to connection problems, network timeouts or other similar problems. If it was […]
This post looks at monitoring Azure Durable Functions, highlighting practical techniques and tools that can help ensure reliability and performance. It also demonstrates how diagnostic APIs can be integrated to provide deeper insights into function execution, state management, and error handling, enabling developers to build more resilient and observable workflows. Code: https://github.com/damienbod/AzureDurableFunctions History Posts in […]
The article show how an Azure Durable Function can be used to process a HTTP API request which waits for the completion result. This can be required when you have no control over the client application calling the API and the process requires asynchronous operations like further API calls and so on. The Azure Durable […]
This article shows how Azure Key Vault could be used together with Azure Functions. The Azure Functions can use the system assigned identity to access the Key Vault. This needs to be configured in the Key Vault access policies using the service principal. By using the Microsoft.Azure.KeyVault and the Microsoft.Extensions.Configuration.AzureKeyVault nuget packages, defining direct references […]
This post shows how to configure Azure Function projects so that no secrets are required in the local.settings.json or in the code. Secrets for the project are saved in the user secrets of the project, or in the app settings of the deployment. The deployment should/can use Azure Key Vault for the secrets and not […]
This post shows how to implement an Azure Durable function flow with an external HTTP API input. The flow is started using a HTTP request, runs an activity, waits for the external input from a HTTP API which could be any Azure function input and then runs a second activity. The application is implemented using […]
This blog shows how to setup Azure App Registrations using Azure CLI and Powershell. The scripts setup the configuration for the applications created in the previous posts in this serious. The aim was to achieve the same as configured in the Azure Portal. This is not possible with the current version of Azure CLI. A […]
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