Encrypts data using a key.
googlekms.encrypt(keyName, versionId, [callback])
The 'callback' parameter specifies a function which will be called when the operation completes (or an error is encountered). If the 'callback' parameter is not specified, then the method will block and will not return until the operation completes (or an error is encountered).
The callback for this method is defined as:
'err' is the error that occurred. If there was no error, then 'err' is 'null'.
'err' has 2 properties which hold detailed information:
This method encrypts data using the key specified by KeyName and (for asymmetric keys) VersionId.
For symmetric keys, VersionId must be empty; the server always uses the primary version of the symmetric key. (Unless the ForceSymmetricEncryption configuration setting is enabled, in which case VersionId can be used to specify a non-primary version.)
For asymmetric keys, VersionId must be specified. Note, however, that Google does not support server-side asymmetric encryption (only decryption), so this method will instead call GetPublicKey internally and then use the public key to encrypt the input data locally. This functionality is offered as a convenience.