For this tutorial, we’ll create a new one called “sample-weather-group”. This is a matter of preference, but is otherwise inconsequential from a security standpoint. Choose an existing group, or create a new one. Open the Azure portal and click on Resource groups.This requires a few steps, but only steps 4 and 5 have to be repeated for new secrets, the others being the one-time building of the vault. Setting up Key Vaultįirst, we’re going to set-up Key Vault. Each secret can be managed in a single secure place, while multiple applications can use it. Once stored, your secrets can only be accessed by applications you authorize, and only on an encrypted channel. If you require a higher level of security, however, you’ll need a specialized vault such as Azure Key Vault.Īzure Key Vault is a service that stores and retrieves secrets in a secure fashion. Oftentimes, storing an API key in an environment variable will be adequate (what is never adequate is hard-coded values in code or configuration files checked into source control). Which one you choose depends on the level of security your application requires. From worst to best, one could think of the following: in your source code repository on GitHub (of course, nobody should ever do that), in configuration files (encrypted or not), in environment variables, or in specialized secret vaults. There are of course many different places where people store such secrets. It’s very easy to get a trial subscription, and get started for free. In order to be able to follow along, you’ll need an Azure subscription. I’ll walk you through the usage of Azure’s Key Vault for storing the key, then I’ll show how to retrieve and use it in a simple Azure function. In this post, we’ll create a simple service that will compare the temperatures in Seattle and Paris using the OpenWeatherMap API, for which we’ll need a secret API key. Most applications need access to secret information in order to function: it could be an API key, database credentials, or something else.
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