The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2015
Filed:
Jun. 28, 2013
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Masahiko Takenaka, Kawasaki, JP;
Tetsuya Izu, Ichikawa, JP;
Kazuyoshi Furukawa, Kawasaki, JP;
Hisashi Kojima, Yokosuka, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A key setting method executed by a node within communication ranges of multiple ad-hoc networks, includes receiving encrypted packets encrypted by respective keys specific to gateways and broadcasted from the gateways in the ad-hoc networks; detecting connection with a mobile terminal communicable with a server retaining the keys specific to the gateways in each ad-hoc network among the ad-hoc networks; transmitting to the server when connection with the mobile terminal is detected, the encrypted packets via the mobile terminal; receiving from the server via the mobile terminal, the keys that are specific to the gateways in the ad-hoc networks and that are for decrypting each encrypted packet among the encrypted packets; and setting each of the received keys as a key to encrypt data that is to be encrypted in the node and decrypt data that is to be decrypted in the node.