interceptor.setSecurementActions("Signature");
interceptor.setEnableSignatureConfirmation(false);
interceptor.setSecurementPassword("123456");
interceptor.setSecurementUsername("rsaKey");
SOAPMessage saajMessage = saajSoap11MessageFactory.createMessage();
transformer.transform(new StringSource(PAYLOAD), new DOMResult(saajMessage.getSOAPBody()));
SoapMessage message = new SaajSoapMessage(saajMessage, saajSoap11MessageFactory);
MessageContext messageContext = new DefaultMessageContext(message, new SaajSoapMessageFactory(saajSoap11MessageFactory));
interceptor.secureMessage(message, messageContext);