Encrypts data using a key.
procedure Encrypt(KeyName: String; VersionId: String);
This method encrypts data using the key specified by KeyName and (for asymmetric keys) VersionId.
The data to encrypt is taken from the input stream supplied via the SetInputStream method, the specified InputFile, or the InputData property. The encrypted data is output to the output stream supplied via the SetOutputStream method, the specified OutputFile, or the OutputData property.
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.