| 摘要 |
PROBLEM TO BE SOLVED: To keep secrecy more securely through client's easy operation. SOLUTION: A random number generated by a random number generation part 43 on the side of a host computer 5 as a qualified person decision device at a decision request is reported to a client terminal 10 through a telephone line, the password of a client is ciphered by using the same random number and the same ciphering system by EX-OR parts 23 and 45 and data encoding parts 24 and 46 on both sides of a client computer 20 and the host computer 50 to generate a one-time password; while the one-time password is stored in a one-time password table 52, the one-time password is sent to a password reception part 54 through a data line different from the telephone line through which the random number was reported to gather them on the host computer 50, and a data matching part 55 confirms matching between the both to decide the qualified person. |
