def __saveAndSign(self, signNode, parentNode="Message"):
workingPath=self.getWorkingPath(signNode)
targetFile=os.path.join(workingPath, "message.txt")
print targetFile
file=FileWrapper(targetFile)
xmlContent=self.doc.toprettyxml(indent=' ')
file.write(xmlContent)
file_name = os.path.dirname(__file__)
projectPath = os.path.abspath(file_name)
signerPath=os.path.join(projectPath, 'MessageSigner.jar')
command='java -jar %s -f %s -m "XML(RSA_SHA1)" -n %s -pn %s -p %s -pp %s' % (signerPath, targetFile, signNode, parentNode, self.privatePath, self.privatePassword)
signedMessage=util.runCmd(command)
#print signedMessage
return signedMessage
