JP2010220019A - 鍵管理方法および鍵管理装置 - Google Patents

鍵管理方法および鍵管理装置 Download PDF

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Publication number
JP2010220019A
JP2010220019A JP2009066113A JP2009066113A JP2010220019A JP 2010220019 A JP2010220019 A JP 2010220019A JP 2009066113 A JP2009066113 A JP 2009066113A JP 2009066113 A JP2009066113 A JP 2009066113A JP 2010220019 A JP2010220019 A JP 2010220019A
Authority
JP
Japan
Prior art keywords
mkb
key
recording medium
intermediate key
valid
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.)
Withdrawn
Application number
JP2009066113A
Other languages
English (en)
Japanese (ja)
Other versions
JP2010220019A5 (enExample
Inventor
Hiroyuki Wada
紘幸 和田
Atsushi Oida
篤 大井田
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.)
Panasonic Corp
Original Assignee
Panasonic 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 Panasonic Corp filed Critical Panasonic Corp
Priority to JP2009066113A priority Critical patent/JP2010220019A/ja
Priority to CN201080010271.5A priority patent/CN102342062A/zh
Priority to PCT/JP2010/001443 priority patent/WO2010106746A1/ja
Publication of JP2010220019A publication Critical patent/JP2010220019A/ja
Priority to US13/232,545 priority patent/US20120002817A1/en
Publication of JP2010220019A5 publication Critical patent/JP2010220019A5/ja
Withdrawn legal-status Critical Current

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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
    • H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/26613—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel for generating or managing keys in general
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
    • 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
    • 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
    • H04L2209/603—Digital right managament [DRM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Storage Device Security (AREA)
JP2009066113A 2009-03-18 2009-03-18 鍵管理方法および鍵管理装置 Withdrawn JP2010220019A (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2009066113A JP2010220019A (ja) 2009-03-18 2009-03-18 鍵管理方法および鍵管理装置
CN201080010271.5A CN102342062A (zh) 2009-03-18 2010-03-03 密钥管理方法和密钥管理装置
PCT/JP2010/001443 WO2010106746A1 (ja) 2009-03-18 2010-03-03 鍵管理方法および鍵管理装置
US13/232,545 US20120002817A1 (en) 2009-03-18 2011-09-14 Key management method and key management device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009066113A JP2010220019A (ja) 2009-03-18 2009-03-18 鍵管理方法および鍵管理装置

Publications (2)

Publication Number Publication Date
JP2010220019A true JP2010220019A (ja) 2010-09-30
JP2010220019A5 JP2010220019A5 (enExample) 2011-10-13

Family

ID=42739414

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009066113A Withdrawn JP2010220019A (ja) 2009-03-18 2009-03-18 鍵管理方法および鍵管理装置

Country Status (4)

Country Link
US (1) US20120002817A1 (enExample)
JP (1) JP2010220019A (enExample)
CN (1) CN102342062A (enExample)
WO (1) WO2010106746A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9252948B2 (en) * 2010-11-19 2016-02-02 International Business Machines Corporation Broadcast encryption based media key block security class-based signing
US9245143B2 (en) 2012-02-09 2016-01-26 Microsoft Technology Licensing, Llc Security policy for device data
CN107193612B (zh) * 2014-06-27 2021-03-23 青岛海信移动通信技术股份有限公司 一种移动终端的版本升级方法及装置

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1152311C (zh) * 1995-10-09 2004-06-02 松下电器产业株式会社 光记录装置和光重放装置
TW540039B (en) * 1999-04-28 2003-07-01 Matsushita Electric Industrial Co Ltd Optical disk, optical disk recording apparatus, optical disk reproducing apparatus, optical disk recording and reproducing apparatus, method for recording and reproducing data on optical disk, method for recording data on disk
JP4009108B2 (ja) * 1999-08-10 2007-11-14 富士通株式会社 メモリカード
US6965992B1 (en) * 2000-02-24 2005-11-15 3Com Corporation Method and system for network security capable of doing stronger encryption with authorized devices
DE60106802T2 (de) * 2000-04-06 2005-03-10 Matsushita Electric Industrial Co., Ltd., Kadoma Urheberrechtsschutzsystem, Verschlüsselungsvorrichtung, Entschlüsselungsvorrichtung und Aufzeichnungsmedium
US7340603B2 (en) * 2002-01-30 2008-03-04 Sony Corporation Efficient revocation of receivers
DE10305730B4 (de) * 2003-02-12 2005-04-07 Deutsche Post Ag Verfahren zum Überprüfen der Gültigkeit von digitalen Freimachungsvermerken
WO2005008385A2 (en) * 2003-07-07 2005-01-27 Cryptography Research, Inc. Reprogrammable security for controlling piracy and enabling interactive content
JP4314950B2 (ja) * 2003-09-26 2009-08-19 日本ビクター株式会社 暗号化装置及び復号化装置
JP4634751B2 (ja) * 2004-07-08 2011-02-16 株式会社東芝 記憶媒体処理方法、記憶媒体処理装置及びプログラム
US20070110236A1 (en) * 2004-10-29 2007-05-17 Pioneer Corporation Encryption/recording device and method
JP4715233B2 (ja) * 2005-02-25 2011-07-06 ソニー株式会社 情報処理装置、および情報記録媒体製造方法、並びにコンピュータ・プログラム
US8165302B2 (en) * 2005-06-07 2012-04-24 Sony Corporation Key table and authorization table management
IL172207A0 (en) * 2005-11-27 2006-04-10 Nds Ltd Disk protection system
JP4921862B2 (ja) * 2006-06-12 2012-04-25 株式会社東芝 情報記録再生装置及び方法
JP2008022367A (ja) * 2006-07-13 2008-01-31 Toshiba Corp 暗号鍵情報保持方法および暗号鍵情報処理装置
JP4358239B2 (ja) * 2007-01-10 2009-11-04 株式会社東芝 コンテンツ提供システム、追跡システム、コンテンツ提供方法及び不正ユーザ特定方法
US8290157B2 (en) * 2007-02-20 2012-10-16 Sony Corporation Identification of a compromised content player
JP4964714B2 (ja) * 2007-09-05 2012-07-04 株式会社日立製作所 ストレージ装置及びデータの管理方法
JP2009027557A (ja) * 2007-07-20 2009-02-05 Toshiba Corp コンテンツデータ配信端末、及びコンテンツデータ配信システム
EP2079033A1 (en) * 2008-01-04 2009-07-15 Irdeto Access B.V. Method and system for secure peer-to-peer communication
US9137015B2 (en) * 2008-01-04 2015-09-15 Arcsoft, Inc. Protection scheme for AACS keys
JP4620146B2 (ja) * 2008-07-18 2011-01-26 株式会社東芝 情報処理装置及び認証方法
JP5139465B2 (ja) * 2010-03-31 2013-02-06 株式会社東芝 メモリチップ、情報記憶システム、読み出し装置

Also Published As

Publication number Publication date
US20120002817A1 (en) 2012-01-05
CN102342062A (zh) 2012-02-01
WO2010106746A1 (ja) 2010-09-23

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