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Showing content from https://www.mongodb.com/docs/manual/reference/method/KeyVault.deleteKey/ below:

KeyVault.deleteKey() (mongosh method) - Database Manual

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.

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

The mongosh client-side field level encryption methods require a database connection with client-side field level encryption enabled. If the current database connection was not initiated with client-side field level encryption enabled, either:

• Use the Mongo() constructor from the mongosh to establish a connection with the required client-side field level encryption options. The Mongo() method supports the following Key Management Service (KMS) providers for Customer Master Key (CMK) management:

  • Amazon Web Services KMS

  • Azure Key Vault

  • Google Cloud Platform KMS

  • Locally Managed Key

  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.

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 the mongosh client.

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 using the generated local key string:

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

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 }

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