![]() Use Azure Key Vault to sign the JWT tokens issued by ASOS/OpenIddict Create a new HSM key and register a client application allowed to access it Though HSMs are complex systems, the main idea is actually simple: key material should never leave the HSM's secure enclave, which is protected against physical or digital intrusions.Īs such, when a service requires encrypting or signing data (e.g a JWT access token in our case), it has to ask the Hardware Security Module to execute the cryptographic operation on its behalf. What is a Hardware Security Module?Ī HSM is a hardened device – generally a PCI board or a standalone appliance – that is exclusively dedicated to cryptographic operations (data encryption/decryption, data signing/verification, key management, etc.). So, good news: this is definitely possible! And thanks to a new project released recently by Oren Novotny, this has never been so easy. Since it's quite a recurring question, I thought it was worth writing a blog post to demonstrate how to do that. This topic shows you how to work with secrets from Azure Key Vault in your App Service or Azure Functions application without requiring any code changes.Last week, I received an email from someone who was asking me whether ASOS or OpenIddict could be used with Azure Key Vault (Microsoft's cloud-based Hardware Security Module offer). ![]() Azure Key Vault is a service that provides centralized secrets management, with full control over access policies and audit history. In order to read secrets from Key Vault, you need to have a vault created and give your app permission to access it.Ĭreate a key vault by following the Key Vault quickstart.Ĭreate a managed identity for your application. Key Vault references will use the app's system assigned identity by default, but you can specify a user-assigned identity.Ĭreate an access policy in Key Vault for the application identity you created earlier. Enable the "Get" secret permission on this policy. Do not configure the "authorized application" or applicationId settings, as this is not compatible with a managed identity. If your vault is configured with network restrictions, you will also need to ensure that the application has network access. Make sure the application has outbound networking capabilities configured, as described in App Service networking features and Azure Functions networking options. Linux applications attempting to use private endpoints additionally require that the app be explicitly configured to have all traffic route through the virtual network. UserAssignedIdentityResourceId=$(az identity show -g MyResourceGroupName -n MyUserAssignedIdentityName -query id -o tsv)ĪppResourceId=$(az webapp show -g MyResourceGroupName -n MyAppName -query id -o tsv)Īz rest -method PATCH -uri "$ is replaced by one of the following options: To set this, use the following Azure CLI or Azure PowerShell command: This requirement will be removed in a forthcoming update. VaultName= vaultName SecretName= secretName SecretVersion= secretVersion The SecretUri should be the full data-plane URI of a secret in Key Vault, optionally including a version, e.g., or The VaultName is required and should the name of your Key Vault resource. ![]() The SecretName is required and should be the name of the target secret.
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