| 摘要 |
PROBLEM TO BE SOLVED: To psychologically suppress the software of a computer from being illegally copied. SOLUTION: The information of a legal user is embedded in an application data file prepared by software, and the name of the user is digitally signed. When a third person who has received the application data file authenticates the digital signatures by the public key of the user, the personal information(name or the like) of the legal user is displayed. Therefore, when the illegal user prepares application data by this software, and digitally signs his or her name, the digital signatures of the legal user are prepared, and the fact of the illegal use is discovered. Thus, it is possible to suppress the illegal copy of the software psychologically. COPYRIGHT: (C)2006,JPO&NCIPI |
