| 摘要 |
PROBLEM TO BE SOLVED: To execute authentication by using a plurality of authentication systems while reducing a processing load of a web server.SOLUTION: An authentication device for authenticating a message received from a client determines an authentication system of first authentication information. In the case of determining that the first authentication information is not authentication information using a prescribed authentication system, the authentication device generates an authentication result showing that the first authentication information does not exist in the message, and determines whether second authentication information is included in the message, and in the case of determining that the second authentication data exists, executes second authentication processing on the basis of the second authentication information. In the second authentication processing, it is determined whether message authentication is successful on the basis of an authentication result generated by the first authentication, and an authentication result authenticated by the second authentication.SELECTED DRAWING: Figure 1 |
