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Using ASP.NET Core with Azure Key Vault
- This article covers the steps of setting up ASP.NET Core to use Azure Key Vault.
- During development, using DefaultAzureCredentials causes access errors but this issue can be resolved using ChainedTokenCredential with an application client secret.
- For local development credentials, Azure.Identity and Azure.Extensions.AspNetCore.Configuration.Secrets Nuget packages can be used.
- The access client can be specified in the project's user secrets, allowing it to function independently of the user account and the last filter used in Visual Studio.
- Using the SecretClient class from Azure.Identity, the secret from the Azure Key Vault can be used directly in the code.
- AddAzureKeyVault can be used to configure the Azure Key Vault. The secret can be read anywhere in the code using the IConfiguration interface.
- Using dotnet user secrets is a more efficient mechanism to use than Azure Key Vault for local development.
- The client secret should not be used in production deployments, and there are better ways to secure the application's access for Key Vault. A system-assigned managed identity is the best way to implement application access in Azure in production environments.
- Links to Azure and Microsoft documentation on Key Vault configuration and developers guide are provide in the article.
- This set up prevents problems caused by incorrect tenants or user accounts in Visual Studio during development.
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