Information communication device, information communication system, and computer program product for transmission control
First Claim
1. An information communication device for transmitting electronic data encrypted for purpose of copyright protection to another information communication device through a network, the device comprising:
- an identification information managing unit configured to hold device identification information identifying other information communication devices acquired through the network;
an ID registration processing unit configured to register the device identification information of the other information communication device when the other information communication device satisfies a predetermined distance condition or when common identification information that is held by both information communication devices is received from a portable device;
an authentication and key exchange processing unit configured to, for purpose of copyright protection, complete an authentication and key exchange process (AKE process) only when the device identification information of the other information communication device is registered in the identification information managing unit, anda measuring unit configured to measure if the other information communication device satisfies a predetermined distance condition,wherein the ID registration processing unit is configured to register the device identification information of the other information communication device when the measurement result of the measuring unit indicates that the other information communication device satisfies the predetermined distance condition.
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Accused Products
Abstract
An aspect of the present invention provides an information communication device for transmitting electronic data encrypted for the purpose of copyright protection, the device includes that an identification information managing unit configured to hold device identification information in connection with other information communication devices acquired through a network, an ID registration processing unit configured to register the device identification information of another connection device when the other communication device satisfies a predetermined distance condition or when common identification information that is held by both information communication devices is received from a portable device, and an authentication and key exchange processing unit configured to, for the purpose of copyright protection, complete authentication and key exchange process (AKE process) only when another information communication device whose device identification information is registered in the identification information managing unit.
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Citations
25 Claims
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1. An information communication device for transmitting electronic data encrypted for purpose of copyright protection to another information communication device through a network, the device comprising:
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an identification information managing unit configured to hold device identification information identifying other information communication devices acquired through the network; an ID registration processing unit configured to register the device identification information of the other information communication device when the other information communication device satisfies a predetermined distance condition or when common identification information that is held by both information communication devices is received from a portable device; an authentication and key exchange processing unit configured to, for purpose of copyright protection, complete an authentication and key exchange process (AKE process) only when the device identification information of the other information communication device is registered in the identification information managing unit, and a measuring unit configured to measure if the other information communication device satisfies a predetermined distance condition, wherein the ID registration processing unit is configured to register the device identification information of the other information communication device when the measurement result of the measuring unit indicates that the other information communication device satisfies the predetermined distance condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An information communication system for transmitting electronic data encrypted for purpose of copyright protection to another information communication device through a network, the system comprising:
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a sending device; and a receiving device configured to receive electronic data encrypted for the purpose of copyright protection and sent from the sending device, wherein at least one of the sending device and the receiving device comprises; an identification information managing unit configured to hold device identification information of other device acquired through the network; an ID registration processing unit configured to register the device identification information of another device when the other device is recognized to be connected to a network having a prescribed limited range; an authentication and key exchange processing unit configured to complete AKE process only when the device identification information of the other information communication device is registered in the identification information managing unit; and a measuring unit configured to measure if the other information communication device satisfies a predetermined distance condition, wherein the ID registration processing unit is configured to register the device identification information of the other information communication device when the measurement result of the measuring unit indicates that the other information communication device satisfies the predetermined distance condition.
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10. An information communication device for transmitting electronic data encrypted for the purpose of copyright protection to another information communication device through a network, the information communication device comprising:
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a first interface unit that is connected to the network; a second interface unit configured to receive unique identification information sent from an identification information sending device that is capable of communicating with the information communication device; an identification information managing unit configured to hold said unique identification information after it is received; an identification information registration processing unit configured to register said unique identification information to the identification information managing unit and determine if the unique identification information is registered in the other information communication device; a first authentication and key exchange processing unit configured to complete authentication of and key exchange with another information communication device for the purpose of copyright protection when it is determined that the unique identification information is registered in the other information communication device; a second authentication and key exchange processing unit configured to execute authentication and key exchange with respect to the identification information sending device through the second interface unit; and a measuring unit configured to measure the round trip time between sending a packet to the identification information sending device and receiving a corresponding response packet from the identification information sending device, wherein the identification information registration processing unit configured to execute registration processing with respect to the identification information sending device when the second authentication and key exchange processing unit has successfully completed its authentication and key exchange with respect to the identification information sending device, wherein the second authentication and key exchange processing unit are configured to complete authentication and exchange processing when the round trip time measured by the measuring device is less than a prescribed amount of time. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A data transmission system, comprising:
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a sending device connected to a network; a receiving device configured to receive electronic data sent from the sending device through the network, the electronic data having been encrypted for the purpose of copyright protection; wherein at least one of the sending device and the receiving device comprises; a communication unit configured to communicate with an identification information sending device through an interface that is separate from the network and receive unique identification information sent from the identification information sending device; an identification information registering unit configured to register the received unique identification information; an identification information registration determining unit configured to determine if the unique identification information is registered in other communication device; an authentication and key exchange processing unit configured to complete authentication of and key exchange with the identification information sending device for purpose of copyright protection only when it is determined that the unique identification information is registered in the other communication device; and a measuring unit configured to measure if the identification information sending device satisfies a predetermined distance condition, wherein the identification information registering unit is configured to register the device identification information of the other information communication device when the measurement result of the measuring unit indicates that the identification information sending device satisfies the predetermined distance condition. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification