| 摘要 |
PROBLEM TO BE SOLVED: To evade attack on the way of communication and to remove the overhead of processing by including a trading means in a security server, protecting secret information stored by a trader by a security function and eliminating communication between the trader and the security server. SOLUTION: The information system is provided with a client 11 for outputting a processing request, a target 16 for executing processing requested from the client 11 and a security function attaining means (security server) 12 for guaranteeing the secrecy of communication between the client 11 and the target 16. In the means 12, a certification means 13 certificates that the client 11 outputting the processing request is the person concerned. An access control means 15 judges whether the processing requested from the client 11 can be executed by the target 16 or not. A trading means 14 retrieves a target name from the features of the target 16. |
