KEY SETTING METHOD, NODE, AND NETWORK SYSTEM
First Claim
1. A key setting method executed by a node that transmits and receives a packet through multi-hop communication in an ad-hoc network among a plurality of ad-hoc networks, the key setting method comprising:
- receiving a packet encrypted using a key specific to a gateway and broadcasted from the gateway in the ad-hoc network;
detecting a connection with a mobile terminal capable of communicating with a server retaining a key specific to a gateway in each ad-hoc network among the ad-hoc networks;
transmitting to the server, via the mobile terminal and when a connection with the mobile terminal is detected, the encrypted packet received;
receiving from the server and via the mobile terminal, a key specific to a gateway in the ad-hoc network and for decrypting the encrypted packet transmitted; and
setting the received key specific to the gateway in the ad-hoc network as the key for encrypting the packet.
1 Assignment
0 Petitions
Accused Products
Abstract
A key setting method executed by a node transmitting and receiving a packet through multi-hop communication in an ad-hoc network among ad-hoc networks, includes receiving a packet encrypted using a key specific to a gateway and simultaneously reported from the gateway in the ad-hoc network; detecting a connection with a mobile terminal capable of communicating with a server retaining a key specific to a gateway in each ad-hoc network among the ad-hoc networks; transmitting to the server, via the mobile terminal and when a connection with the mobile terminal is detected, the encrypted packet received; receiving from the server and via the mobile terminal, a key specific to a gateway in the ad-hoc network and for decrypting the encrypted packet transmitted; and setting the received key specific to the gateway in the ad-hoc network as the key for encrypting the packet.
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Citations
7 Claims
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1. A key setting method executed by a node that transmits and receives a packet 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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receiving a packet encrypted using a key specific to a gateway and broadcasted from the gateway in the ad-hoc network; detecting a connection with a mobile terminal capable of communicating with a server retaining a key specific to a gateway in each ad-hoc network among the ad-hoc networks; transmitting to the server, via the mobile terminal and when a connection with the mobile terminal is detected, the encrypted packet received; receiving from the server and via the mobile terminal, a key specific to a gateway in the ad-hoc network and for decrypting the encrypted packet transmitted; and setting the received key specific to the gateway in the ad-hoc network as the key for encrypting the packet. - View Dependent Claims (2, 3)
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4. A node that transmits and receives a packet through multi-hop communication in an ad-hoc network among a plurality of ad-hoc networks, the node comprising:
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a first receiver configured to receive a packet encrypted using a key specific to a gateway and simultaneously reported from the gateway in the ad-hoc network; a detector configured to detect a connection with a mobile terminal capable of communicating with a server retaining a key specific to a gateway in each ad-hoc network among the ad-hoc networks; a transmitter configured to transmit to the server, via the mobile terminal and upon detecting a connection with the mobile terminal, the encrypted packet received; a second receiver configured to receive from the server and via the mobile terminal, a key specific to a gateway in the ad-hoc network and for decrypting the encrypted packet transmitted; and a setting unit configured to set the received key specific to the gateway in the ad-hoc network as the key for encrypting the packet. - View Dependent Claims (5, 6)
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7. A network system comprising:
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a server that accesses a database storing a key specific to a gateway in each ad-hoc network among a plurality of ad-hoc networks; and a node that transmits and receives a packet through multi-hop communication in an ad-hoc network among the ad-hoc networks, wherein the node; receives a packet encrypted using a key specific to a gateway and broadcasted from the gateway in the ad-hoc network, detects a connection with a mobile terminal capable of communicating with the server, transmits, via the mobile terminal and to the server upon detecting a connection with the mobile terminal, the encrypted packet received, receives from the server and via the mobile terminal, a key specific to a gateway in the ad-hoc network and for decrypting the encrypted packet transmitted, and sets the received key specific to the gateway in the ad-hoc network as the key for encrypting the packet, the server receives from the node and via the mobile terminal, the encrypted packet, extracts from the database, the key for decrypting the encrypted packet received, and transmits to the node and via the mobile terminal, the key for decrypting the encrypted packet extracted.
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Specification