Communication system, communication device, vehicle and communication method
First Claim
1. A communication system comprising:
- a plurality of communication devices coupled together such that a mutual communication between the communication devices is possible over a network; and
a server coupled to each of the communication devices such that each communication device selectively communicates with the server using a secure communication path as a secure environment,wherein the communication devices request an authentication from the server using the secure environment,wherein the server, upon authenticating the communication devices, issues to the communication devices random seeds of a same value and individual identifiers for each authenticated communication device,wherein each of the communication devices stores its own area information and an IP address that includes a pseudorandom number that has been generated by using the communication device'"'"'s own area information and the issued random seed as seeds and the individual identifier that has been issued to that communication device,wherein each of the communication devices further accesses time information, and the pseudorandom number is generated by using a value that has been generated with an irreversible compressibility function on a basis of the area information, the time information, and the issued random seed, the area information and the time information being different from the issued random seed,wherein the communication devices establish a mutual communication between communication devices having pseudorandom numbers in their IP addresses that are mutually the same, andwherein the communication devices share the irreversible compressibility function in each of the communication devices to generate the value.
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Accused Products
Abstract
Provided is a high-speed and light-weighted authentication system that makes IP address filtering possible and does not impair real-time property even on a network including many and unspecific entities (communication devices). In a communication system that a plurality of communication devices are coupled together such that mutual communication is possible over the network, the communication devices communicate with a server under a secure environment, when authentication has been obtained from the server, random seeds of the same value and individual identifiers are issued to them, each communication device generates the IP address that includes a pseudorandom number and the identifier, and the communication devices establish communication between the communication devices that include the pseudorandom numbers that are mutually the same in their IP addresses.
44 Citations
19 Claims
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1. A communication system comprising:
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a plurality of communication devices coupled together such that a mutual communication between the communication devices is possible over a network; and a server coupled to each of the communication devices such that each communication device selectively communicates with the server using a secure communication path as a secure environment, wherein the communication devices request an authentication from the server using the secure environment, wherein the server, upon authenticating the communication devices, issues to the communication devices random seeds of a same value and individual identifiers for each authenticated communication device, wherein each of the communication devices stores its own area information and an IP address that includes a pseudorandom number that has been generated by using the communication device'"'"'s own area information and the issued random seed as seeds and the individual identifier that has been issued to that communication device, wherein each of the communication devices further accesses time information, and the pseudorandom number is generated by using a value that has been generated with an irreversible compressibility function on a basis of the area information, the time information, and the issued random seed, the area information and the time information being different from the issued random seed, wherein the communication devices establish a mutual communication between communication devices having pseudorandom numbers in their IP addresses that are mutually the same, and wherein the communication devices share the irreversible compressibility function in each of the communication devices to generate the value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A communication device comprising an RF module for communicating with a server and for communicating with other communication devices over a network,
wherein the communication device stores an IP address that includes a pseudorandom number that has been generated by using a value generated with an irreversible compressibility function on a basis of area information and a random seed that has been issued from the server under a secure environment as a seed, wherein the communication device further accesses time information, wherein the pseudorandom number is generated by using a value generated with the irreversible compressibility function on a basis of the area information, the time information, and the random seed, the area information and the time information being different from the issued random seed, wherein the communication device authenticates, as a communication object, another communication device that includes an IP address including a same pseudorandom number as its IP address, and wherein the communication devices share the irreversible compressibility function in each of the communication devices to generate the value.
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15. A communication method in a communication system in which a plurality of communication devices is coupled together such that a mutual communication is possible over a network and each of the communication devices is coupled with a server such that communication with the server is possible, the communication method comprising:
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receiving an authentication request by the server from one or more of the communication devices under a secure environment; authenticating, by the server, the one or more communication devices; issuing, by the server, to individual ones of the one or more authenticated communication devices pseudo seeds having a same value, each of the communication devices having its own area information; and generating, in each of the one or more authenticated communication devices, an IP address that includes a pseudorandom number generated by using a value generated with an irreversible compressibility function on a basis of the area information, time information, and the random seed as the seeds issued by the server and an identifier that has been issued to the communication device itself; establishing, by the one or more authenticated communication devices, a mutual communication between the communication devices having same pseudorandom numbers in their IP addresses; and sharing, in each of the one or more authenticated communication devices, an irreversible compressibility function to generate the value. - View Dependent Claims (16, 17, 18, 19)
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Specification