| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-speed and light-weight authentication system that enables the filtering of an IP address and does not lose a realtime property even in a network in which there are unspecified large number of entities (communication devices).SOLUTION: In a communication system, a plurality of communication devices are communicatively connected with each other via a network. The communication network is configured as follows. The plurality of communication devices are capable of communicating with a server under a secure environment, and when they obtain authentication from the server under the secure environment, the server issues the same random number seed and an individual identifier to the communication devices. Each of the communication devices generates an IP address including a pseudo random number generated using, as a seed, a value generated by an irreversible compression function on the basis of local information held by itself and the issued random number seed, and the identifier issued to itself. The communication devices establish communication with a communication device that has an IP address including the same pseudo random number.SELECTED DRAWING: Figure 7 |
