| 摘要 |
PURPOSE: A system and a method for certificating originality of electronic document are provided to easily request an issue of time stamp about each electronic document without changing a large amount of electronic documents to a specific document format. CONSTITUTION: An electronic document generator computer(10) generates electronic documents and request certificating original document about the electronic document. If the request is receives form a electronic generator computer, a homepage server(20) checks identity of electronic document generator. If the request is received form the homepage server, a front server(30) request a time stamp token. If the time stamp token is received, a time stamp server(40) generates a time stamp token about the electronic document. The electronic document generator computer receives the time stamp token, and inserts the time stamp token to the electronic document. |
