TW200618573A - Communication system and device - Google Patents

Communication system and device

Info

Publication number
TW200618573A
TW200618573A TW094120226A TW94120226A TW200618573A TW 200618573 A TW200618573 A TW 200618573A TW 094120226 A TW094120226 A TW 094120226A TW 94120226 A TW94120226 A TW 94120226A TW 200618573 A TW200618573 A TW 200618573A
Authority
TW
Taiwan
Prior art keywords
communication
communication device
keep alive
alive message
key information
Prior art date
Application number
TW094120226A
Other languages
English (en)
Other versions
TWI370659B (zh
Inventor
Tomoharu Kaneko
Tatsuya Inagaki
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of TW200618573A publication Critical patent/TW200618573A/zh
Application granted granted Critical
Publication of TWI370659B publication Critical patent/TWI370659B/zh

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
TW094120226A 2004-06-22 2005-06-17 Communication system and device TW200618573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004184165A JP4365733B2 (ja) 2004-06-22 2004-06-22 通信システムおよび通信装置

Publications (2)

Publication Number Publication Date
TW200618573A true TW200618573A (en) 2006-06-01
TWI370659B TWI370659B (zh) 2012-08-11

Family

ID=35510090

Family Applications (1)

Application Number Title Priority Date Filing Date
TW094120226A TW200618573A (en) 2004-06-22 2005-06-17 Communication system and device

Country Status (5)

Country Link
US (1) US7954154B2 (zh)
EP (1) EP1758291A4 (zh)
JP (1) JP4365733B2 (zh)
TW (1) TW200618573A (zh)
WO (1) WO2005125082A1 (zh)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1946062A (zh) 2006-10-10 2007-04-11 华为数字技术有限公司 保活nat设备中会话表项的方法和***
EP2147518B1 (en) * 2007-05-08 2014-11-19 Thomson Licensing Method and apparatus for adjusting decryption keys
US9998287B2 (en) 2015-03-06 2018-06-12 Comcast Cable Communications, Llc Secure authentication of remote equipment
JP7300845B2 (ja) * 2019-02-15 2023-06-30 三菱重工業株式会社 制御装置、産業用制御システムおよび暗号鍵寿命延長方法

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0683202B2 (ja) 1985-06-25 1994-10-19 日本電気株式会社 デ−タ符号化／復号化装置
JPH10276186A (ja) 1997-03-31 1998-10-13 Nippon Telegr & Teleph Corp <Ntt> 認証システムにおける公開鍵証明証の有効期限通知方法
JPH11212926A (ja) * 1998-01-27 1999-08-06 Nec Commun Syst Ltd Ｕｎｉｘシステムにおけるシステム時刻補正方法
JP4434465B2 (ja) * 1999-11-16 2010-03-17 キヤノン株式会社 通信装置及び方法並びに記憶媒体
JP2001292135A (ja) 2000-04-07 2001-10-19 Matsushita Electric Ind Co Ltd 鍵交換システム
JP2002217896A (ja) * 2001-01-23 2002-08-02 Matsushita Electric Ind Co Ltd 暗号通信方法およびゲートウエイ装置
WO2003024136A1 (en) * 2001-09-12 2003-03-20 Aircross Co., Ltd. Push advertisement in mobile communications network and mobile terminal suitable for the same
JP2003101533A (ja) * 2001-09-25 2003-04-04 Toshiba Corp 機器認証管理システム及び機器認証管理方法
JP3961309B2 (ja) 2002-02-13 2007-08-22 三菱電機株式会社 公開鍵サーバ
JP2004096583A (ja) 2002-09-03 2004-03-25 Toshiba Corp 通信方法及び通信端末
JP2004166153A (ja) * 2002-11-15 2004-06-10 Nec Corp マルチキャスト配信システムにおける鍵交換方式
US7702904B2 (en) * 2002-11-15 2010-04-20 Nec Corporation Key management system and multicast delivery system using the same
KR100456162B1 (ko) * 2002-12-14 2004-11-09 한국전자통신연구원 디지털 케이블 티비 제한수신시스템에서 키 업데이트 방법
JP2004363724A (ja) * 2003-06-02 2004-12-24 Toshiba Corp 受信管理装置、放送受信装置、情報配信装置、情報配信方法およびプログラム

Also Published As

Publication number Publication date
JP4365733B2 (ja) 2009-11-18
TWI370659B (zh) 2012-08-11
US20080212778A1 (en) 2008-09-04
US7954154B2 (en) 2011-05-31
EP1758291A1 (en) 2007-02-28
WO2005125082A1 (ja) 2005-12-29
JP2006013628A (ja) 2006-01-12
EP1758291A4 (en) 2011-10-19

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees