SPD MANAGEMENT SYSTEM, SPD SIGNAL RECEIVER AND SPD DIVISION AND DISTRIBUTION SYSTEM AND SPD DIVISION AND DISTRIBUTION METHOD AND COMPUTER READABLE RECORDING MEDIUM RECORDED WITH SPD DIVISION AND DISTRIBUTION PROGRAM

摘要

PROBLEM TO BE SOLVED: To efficiently distribute SPD(security policy data) while assuring security. SOLUTION: In the SPD division and distribution method of distributing the SPD to assure the security of cipher communication from a management system 100 to a VPN system 200 which is a distribution destination, the management system 100 saves the SPD and the division information for dividing the SPD in correspondence in a memory region, reads the SPD and division information corresponding to the distribution destination from the memory region, forms a plurality of the divided SPD information by dividing the read SPD and sends a plurality of the formed divided SPD information. On the other hand, the VPN system 200 receives a plurality of the transmitted divided SPD information, synthesizes the SPD by using a plurality of the divided SPD information and stores the synthesized SPD.