A method of certificating a message, terminal thereof and system thereof are disclosed. By the present invention, in transmitting various messages via a prescribed communication service, a validity of the message is certificated. By the present invention, without checking contents of a message, a recipient...http://www.google.de/patents/US20060271396?utm_source=gb-gplus-sharePatent US20060271396 - Method of certificating message, terminal thereof and system thereof
