/**
* Signs the data in <em>plain</em> and stores the result in <em>signature</em>.
*
* @param plain data that you want to sign
* @param signature result of the operation
*/
public void sign(GnuPGData plain, GnuPGData signature) throws GnuPGException {
if (plain == null || signature == null)
throw new GnuPGException("Parameters not complete or null.");
gpgmeOpSign(
this.getInternalRepresentation(),
plain.getInternalRepresentation(),
signature.getInternalRepresentation());
}
