It is possible to use Microsoft Azure Key Vault to encrypt each tenant in your Orchestrator instance with its own unique key. The Key Vault is used by Orchestrator to store the keys in a safe manner, as well as to manage them, adding a better segregation of your data between tenants.

Orchestrator can be installed in both Microsoft Azure or on-premise in order to take advantage of this feature, yet the latter requires you to connect the Orchestrator instance to the internet and Azure Key Vault.

Prerequisites:

• Your own Microsoft Azure Key Vault
• A clean Orchestrator installation
• A valid SSL certificate for your Orchestrator instance:
  • Private Key Certificate - It needs to be uploaded in App Services > SSL Settings > Private Key Certificates and it needs to be imported on the machine(s) Orchestrator is installed on (the domain where the certificate was generated and installed has to match the domain of the user you run Orchestrator under)
  • Public Key Certificate - It needs to be uploaded in App registration > Settings > Keys > Public Keys

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Important!

Encryption keys must not be edited on the Azure Key Vault side by users, such as enabling/disabling secrets or editing the activation date and expiration date. If a secret is disabled, data stored by Orchestrator for that tenant is no longer decrypted.

To set up the connection between your Azure Key Vault and Orchestrator instances, follow these steps:

1. Open the web.config file of your Orchestrator instance.
2. Make sure that the Database.EnableAutomaticMigrations parameter is set to true. Otherwise, all subsequent changes to the web.config file do not take effect.
3. Set EncryptionKeyPerTenant.Enabled to true.
4. Set EncryptionKeyPerTenant.KeyProvider to AzureKeyVault.
5. In Azure, in App Registrations, search for your Orchestrator instance and select it.
6. Copy the Application ID and provide it as a value for the Azure.KeyVault.ClientId web.config parameter, in the secureAppSettings section. Example: <add key="Azure.KeyVault.ClientId" value="ae11aa1a-1234-1234-a123-a12a12aaa1aa" />.

7. a. Look for your private certificate for your Orchestrator instance in App Services > SSL Settings > Private Certificates. (If your Orchestrator is on-premise, look for the certificate locally.)
   b. Look for your public certificate for your Orchestrator instance in App registration > Settings > Keys > Public Keys.

8. Copy the Thumbprint and provide it as a value for the Azure.KeyVault.CertificateThumbprint parameter, in the secureAppSettings section. Example: <add key="Azure.KeyVault.CertificateThumbprint" value="1234123412341234123412341234124312341234" />.
9. In Azure, search for your key vault and select it. Information pertaining to it is displayed in a separate panel.
10. Copy the DNS Name and provide it as a value for the Azure.KeyVault.VaultAddress parameter, in the secureAppSettings section. Example: <add key="Azure.KeyVault.VaultAddress" value="https://CustomVaultName.vault.azure.net/" />.
11. Give all key, secret, and certificate permissions to Orchestrator in your vault by adding the principal (registered app) it belongs to in the Access policies section.