KEY SETTING METHOD, NODE, AND NETWORK SYSTEM
First Claim
1. A key setting method executed by a node that transmits and receives data through multi-hop communication in an ad-hoc network among a plurality of ad-hoc networks, the key setting method comprising:
- detecting connection with a mobile terminal communicating with a server connected to a gateway in each ad-hoc network among the ad-hoc networks;
transmitting by simultaneously reporting to the ad-hoc network, an acquisition request for a key for encrypting the data when the connection with the mobile terminal is detected at the detecting;
receiving from the server via the mobile terminal, a key specific to a gateway and transmitted from the gateway to the server consequent to transfer of the simultaneously reported acquisition request to the gateway in the ad-hoc network; and
setting the key specific to the gateway received at the receiving as the key for encrypting the data.
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Accused Products
Abstract
A key setting method executed by a node transmitting and receiving data through multi-hop communication in an ad-hoc network among multiple ad-hoc networks, includes detecting connection with a mobile terminal communicating with a server connected to a gateway in each ad-hoc network among the ad-hoc networks; transmitting by simultaneously reporting to the ad-hoc network, an acquisition request for a key for encrypting the data when the connection with the mobile terminal is detected at the detecting; receiving from the server via the mobile terminal, a key specific to a gateway and transmitted from the gateway to the server consequent to transfer of the simultaneously reported acquisition request to the gateway in the ad-hoc network; and setting the key specific to the gateway received at the receiving as the key for encrypting the data.
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Citations
12 Claims
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1. A key setting method executed by a node that transmits and receives data through multi-hop communication in an ad-hoc network among a plurality of ad-hoc networks, the key setting method comprising:
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detecting connection with a mobile terminal communicating with a server connected to a gateway in each ad-hoc network among the ad-hoc networks; transmitting by simultaneously reporting to the ad-hoc network, an acquisition request for a key for encrypting the data when the connection with the mobile terminal is detected at the detecting; receiving from the server via the mobile terminal, a key specific to a gateway and transmitted from the gateway to the server consequent to transfer of the simultaneously reported acquisition request to the gateway in the ad-hoc network; and setting the key specific to the gateway received at the receiving as the key for encrypting the data. - View Dependent Claims (2, 3, 4, 5)
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6. A node that transmits and receives data through multi-hop communication in an ad-hoc network among a plurality of ad-hoc networks, the node comprising:
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a detecter configured to detect connection with a mobile terminal communicating with a server connected to a gateway in each ad-hoc network among the ad-hoc networks; a transmitter configured to transmit by simultaneously reporting to the ad-hoc network, an acquisition request for a key for encrypting the data upon detection of the connection with the mobile terminal; a receiver configured to receive from the server via the mobile terminal, the key specific to a gateway and transmitted from the gateway to the server consequent to transfer of the simultaneously reported acquisition request to the gateway in the ad-hoc network; and a setting unit configured to set the received key specific to the gateway as the key for encrypting the data. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A network system comprising:
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a node that transmits and receives a packet through multi-hop communication in an ad-hoc network among a plurality of ad-hoc networks; and a server connected to a gateway in each ad-hoc network of the ad-hoc networks, wherein the node; detects connection with a mobile terminal capable of communicating with the server, transmits by simultaneously reporting to the ad-hoc network upon detecting the connection with the mobile terminal, an acquisition request for a key for encrypting the data, receives from the server via the mobile terminal, the key specific to a gateway and transmitted from the gateway to the server consequent to transfer of the simultaneously reported acquisition request to the gateway in the ad-hoc network, and sets the received key specific to the gateway as the key for encrypting the data, and wherein the server receives the key specific to the gateway from the gateway in the ad-hoc network to which the acquisition request is transferred, and transmits to the node, via the mobile terminal, the received key specific to the gateway.
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Specification