| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system and a method assuring a highly advanced security, eliminating a restriction of the number of times of using a password, and dispensing with a strict time management between an authenticatee side device and an authenticator side device. <P>SOLUTION: An authenticatee side device 100 and an authenticator side device 300 extract child data 131 and 331 and seed data 171 and 371 from parent data 111 and 311 of the same content respectively by the same extraction method, create passwords 141 and 341 from the child data 131 and 331 to use them for the authentication, and perform the same prescribed process to the seed data 171 and 371 respectively to create next-generation parent data 112 and 312 necessary for the next authentication and update the original parent data 111 and 311 respectively. <P>COPYRIGHT: (C)2012,JPO&INPIT |
