| 摘要 |
PROBLEM TO BE SOLVED: To enable a user to safely set a password again without danger by transmitting an inquiry code to a server and producing a key for password setting when the user forgets the password. SOLUTION: When a client user forgets his password, a password for resetting is inputted to a password resetting part 4 on a client device 1, an inquiry code is produced and it is sent together with a user identifier to an authentication server 8. When the part 4 sends the inquiry code to the server 8 and when an automatic person himself/herself confirming part 14 recognizes that input information is legal from user information and confirmation items 10 at the time of resetting a password, a resetting key generating part 15 produces a resetting key from the inquiry code and returns it to the device 1. The part 4 which receives the resetting key authenticates the validity from the combination of an encipher password 5 and the resetting key and allows the user to set the password. |
