JP4564319B2 - 通信装置と通信方法 - Google Patents

通信装置と通信方法 Download PDF

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Publication number
JP4564319B2
JP4564319B2 JP2004280694A JP2004280694A JP4564319B2 JP 4564319 B2 JP4564319 B2 JP 4564319B2 JP 2004280694 A JP2004280694 A JP 2004280694A JP 2004280694 A JP2004280694 A JP 2004280694A JP 4564319 B2 JP4564319 B2 JP 4564319B2
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JP
Japan
Prior art keywords
key
unit
communication
network
encryption
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
JP2004280694A
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English (en)
Japanese (ja)
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JP2006094435A (ja
JP2006094435A5 (https=
Inventor
嘉雄 木村
典哉 坂本
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP2004280694A priority Critical patent/JP4564319B2/ja
Priority to US11/235,071 priority patent/US20060067532A1/en
Publication of JP2006094435A publication Critical patent/JP2006094435A/ja
Publication of JP2006094435A5 publication Critical patent/JP2006094435A5/ja
Application granted granted Critical
Publication of JP4564319B2 publication Critical patent/JP4564319B2/ja
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
    • H04L9/0894—Escrow, recovery or storing of secret information, e.g. secret key escrow or cryptographic key storage
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)
JP2004280694A 2004-09-27 2004-09-27 通信装置と通信方法 Expired - Fee Related JP4564319B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004280694A JP4564319B2 (ja) 2004-09-27 2004-09-27 通信装置と通信方法
US11/235,071 US20060067532A1 (en) 2004-09-27 2005-09-27 Communication unit and communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004280694A JP4564319B2 (ja) 2004-09-27 2004-09-27 通信装置と通信方法

Publications (3)

Publication Number Publication Date
JP2006094435A JP2006094435A (ja) 2006-04-06
JP2006094435A5 JP2006094435A5 (https=) 2007-11-08
JP4564319B2 true JP4564319B2 (ja) 2010-10-20

Family

ID=36099124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004280694A Expired - Fee Related JP4564319B2 (ja) 2004-09-27 2004-09-27 通信装置と通信方法

Country Status (2)

Country Link
US (1) US20060067532A1 (https=)
JP (1) JP4564319B2 (https=)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5417016B2 (ja) * 2009-03-31 2014-02-12 富士通株式会社 管理プログラム、管理装置、および受信システム
JP7619721B1 (ja) 2024-05-24 2025-01-22 Ｎｅｃプラットフォームズ株式会社 可搬型装置、管理サーバ、管理システム、復号方法、鍵管理方法およびプログラム

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5237610A (en) * 1990-02-01 1993-08-17 Scientific-Atlanta, Inc. Independent external security module for a digitally upgradeable television signal decoder
US5886732A (en) * 1995-11-22 1999-03-23 Samsung Information Systems America Set-top electronics and network interface unit arrangement
US7124938B1 (en) * 1999-03-24 2006-10-24 Microsoft Corporation Enhancing smart card usage for associating media content with households
US20040250273A1 (en) * 2001-04-02 2004-12-09 Bellsouth Intellectual Property Corporation Digital video broadcast device decoder
US7103663B2 (en) * 2001-06-11 2006-09-05 Matsushita Electric Industrial Co., Ltd. License management server, license management system and usage restriction method
JP3663177B2 (ja) * 2002-02-08 2005-06-22 株式会社東芝 情報記録再生装置及び情報記録再生方法
WO2004100010A1 (en) * 2003-04-30 2004-11-18 Iptv Systems, Llc Secure, continuous, proxy-optimized, device-to-device data download reception system and method of use
US7369660B1 (en) * 2003-05-20 2008-05-06 The Directv Group, Inc. Methods and apparatus for distributing digital content
CN100498948C (zh) * 2003-06-18 2009-06-10 松下电器产业株式会社 重放装置、重放方法
WO2005011294A1 (ja) * 2003-07-28 2005-02-03 Nec Corporation 視聴調査システム
US20050091681A1 (en) * 2003-10-22 2005-04-28 Bruce Borden Systems and methods for video storage and display
US8528015B2 (en) * 2003-11-06 2013-09-03 Aptiv Digital, Inc. Resource sharing system of set-top boxes
JP2007195008A (ja) * 2006-01-20 2007-08-02 Funai Electric Co Ltd 放送信号受信装置

Also Published As

Publication number Publication date
JP2006094435A (ja) 2006-04-06
US20060067532A1 (en) 2006-03-30

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