Patent ID: 8732454
Filing Date: 2014-05-20
Classification: H04L,H04W

Abstract:
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.