| 摘要 |
PROBLEM TO BE SOLVED: To provide an authentication method using a plurality of accounts, a system device, and a processing program capable of maintaining high-degree security by using a plurality of IC cards or ID/passwords for authentication. SOLUTION: An authentication system device provides service so long as expected all authentication processing are completed by executing the authentication processing by using the respective IC cards 801, 901, and 1001 or the ID/ passwords to the plurality of accounts in a computer network NW, and adopts a characteristic constitution means for constructing a completion system for integrally repeating mutual both authentication processing a plurality of times by imparting continuous consistency over to the inside of the same sequence by an authentication client terminal 501 for executing the authentication processing a plurality of times in the same sequence according to a request of an authentication server 601 and the authentication server 601 for executing the authentication processing a plurality of times in the same sequence according to a determined condition. |
