Database Manual / Reference / mongosh Methods / In-Use Encryption

KeyVault.deleteKey() (mongosh method)

KeyVault.deleteKey(UUID)

Deletes a data encryption key with the specified UUID from the key vault associated to the database connection.

deleteKey() has the following syntax:

keyVault = db.getMongo().getKeyVault()

keyVault.deleteKey(UUID("<UUID String>"))

The UUID is a BSON binary data object with subtype 4.

Returns:	A document indicating the number of deleted keys.

Compatibility

This command is available in deployments hosted in the following environments:

MongoDB Atlas: The fully managed service for MongoDB deployments in the cloud

MongoDB Enterprise: The subscription-based, self-managed version of MongoDB
MongoDB Community: The source-available, free-to-use, and self-managed version of MongoDB

Behavior

Requires Configuring Client-Side Field Level Encryption on Database Connection

The mongosh ClientEncryption methods require a database connection with in-use encryption enabled. If the current database connection was not initiated with in-use encryption enabled, either:

Use the Mongo() constructor from the mongosh to establish a connection with the required in-use encryption options. The Mongo() method supports the following Key Management Service (KMS) providers for Customer Master Key (CMK) management:
or
Use the mongosh command line options to establish a connection with the required options. The command line options only support the Amazon Web Services KMS provider for CMK management.

Example

The following example is intended for rapid evaluation of client-side field level encryption. For specific examples of using KeyVault.deleteKey() with each supported KMS provider, see Delete a Data Encryption Key.

Start mongosh

Start the mongosh client.

mongosh --nodb

Generate Your Key

To configure client-side field level encryption for a locally managed key, generate a base64-encoded 96-byte string with no line breaks.

const TEST_LOCAL_KEY = require("crypto").randomBytes(96).toString("base64")

Create the Client-Side Field Level Encryption Options

Create the client-side field level encryption options using the generated local key string:

 var autoEncryptionOpts = {
   "keyVaultNamespace" : "encryption.__dataKeys",
   "kmsProviders" : {
     "local" : {
       "key" : BinData(0, TEST_LOCAL_KEY)
     }
   }
 }

Create Your Encrypted Client

Use the Mongo() constructor with the client-side field level encryption options configured to create a database connection. Replace the mongodb://myMongo.example.net URI with the connection string URI of the target cluster.

encryptedClient = Mongo(
  "mongodb://myMongo.example.net:27017/?replSetName=myMongo",
   autoEncryptionOpts
)

Retrieve the KeyVault object and use the KeyVault.deleteKey() method to delete the data encryption key with matching UUID:

keyVault = encryptedClient.getKeyVault()
keyVault.deleteKey(UUID("b4b41b33-5c97-412e-a02b-743498346079"))

If successful, deleteKey() returns output similar to the following:

{ "acknowledged" : true, "deletedCount" : 1 }

Tip

Delete a Data Encryption Key

Back

KeyVault.createKey

KeyVault.getKey