| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prevent an unauthorized access by solution of a one-time password generation logic in a system which performs user authentication using a one-time password between a client and a server. <P>SOLUTION: The client and the server generate random one-time passwords, respectively, and mutually exchange the generated passwords, whereby authentication by perfect random passwords which uses no specified one-time password generation logic can be performed. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
