kmsKeyIdentifier

The identifier of the AWS KMS customer managed key for EventBridge to use, if you choose to use a customer managed key to encrypt pipe data. The identifier can be the key Amazon Resource Name (ARN), KeyId, key alias, or key alias ARN. To update a pipe that is using the default AWS owned key to use a customer managed key instead, or update a pipe that is using a customer managed key to use a different customer managed key, specify a customer managed key identifier. To update a pipe that is using a customer managed key to use the default AWS owned key , specify an empty string. For more information, see Managing keys in the AWS Key Management Service Developer Guide .