TW200618573A - Communication system and device - Google Patents
Communication system and deviceInfo
- 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
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)
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)
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)
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 |
-
2004
- 2004-06-22 JP JP2004184165A patent/JP4365733B2/ja not_active Expired - Fee Related
-
2005
- 2005-06-03 US US11/630,143 patent/US7954154B2/en not_active Expired - Fee Related
- 2005-06-03 EP EP05750802A patent/EP1758291A4/en not_active Withdrawn
- 2005-06-03 WO PCT/JP2005/010262 patent/WO2005125082A1/ja active Application Filing
- 2005-06-17 TW TW094120226A patent/TW200618573A/zh not_active IP Right Cessation
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 |