Title:
通信システム、鍵配信装置、暗号処理装置
Document Type and Number:
Japanese Patent JP4576997
Kind Code:
B2
Abstract:
A communication system has a plurality of nodes that perform encrypted communication via a LAN, each using an identical common cipher key. The common cipher key is replaced at fixed or irregular intervals, by being transmitted from a main node in a broadcast mode via the LAN to respective secondary nodes that are to share the key. When the key is successfully received by a secondary node, it returns a confirmation signal. The system can be configured such that a notification list of secondary nodes for which key acquisition has been confirmed is transmitted to all of the secondary nodes.
Inventors:
Takehiro Iwamura
Application Number:
JP2004355907A
Publication Date:
November 10, 2010
Filing Date:
December 08, 2004
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H04L9/08; H04L29/06
Domestic Patent References:
| JP2004023156A | ||||
| JP2004023237A | ||||
| JP10051438A | ||||
| JP59100068U | ||||
| JP2003283481A | ||||
| JP4347949A | ||||
| JP2003212093A | ||||
| JP2005203882A | ||||
| JP2004015305A | ||||
| JP2002337633A | ||||
| JP2000284808A | ||||
| JP6197105A |
Other References:
宇野重雄,“第3部 コントロール・エリア・ネットワーク 第7章 マルチマスタ方式の車内ネットワーク・プロトコル”,トランジスタ技術,日本,CQ出版株式会社,2003年 3月,第40巻,第3号,p.181-192
Attorney, Agent or Firm:
Tsutomu Adachi