| 摘要 |
PROBLEM TO BE SOLVED: To provide a system which allows for implementation of user authentication while ensuring convenience of a user, in a form where an application is arranged on the server side.SOLUTION: A user terminal 1 receives a command from a communication apparatus 3 and transmits to an authentication/AP server 2, receives a response generated in the application processing unit 214 of the authentication/AP server 2 for the command and transmits to the communication apparatus 3. The authentication/AP server 2 has an authentication data verification unit 212 for verifying the transmission source of the command. The user terminal 1 generates authentication data based on the N-th command without waiting the response, and transmits the authentication data generated based on the N-th command and the (N+1)th command to the authentication data verification unit 212. The authentication data verification unit 212 generates collation data based on the already received N-th command, and verifies the transmission source of the (N+1)th command, by collating the authentication data received together with the (N+1)th command and the data for collation.SELECTED DRAWING: Figure 2 |
