JP5167079B2 - 受信装置及びその制御方法 - Google Patents

受信装置及びその制御方法 Download PDF

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Publication number
JP5167079B2
JP5167079B2 JP2008291496A JP2008291496A JP5167079B2 JP 5167079 B2 JP5167079 B2 JP 5167079B2 JP 2008291496 A JP2008291496 A JP 2008291496A JP 2008291496 A JP2008291496 A JP 2008291496A JP 5167079 B2 JP5167079 B2 JP 5167079B2
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JP
Japan
Prior art keywords
device key
key
transport stream
stored
key generation
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
JP2008291496A
Other languages
English (en)
Japanese (ja)
Other versions
JP2010118961A5 (enExample
JP2010118961A (ja
Inventor
竜之 西田
吉博 嵯峨
健一 森川
一彦 中沢
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP2008291496A priority Critical patent/JP5167079B2/ja
Priority to US12/576,449 priority patent/US8265269B2/en
Publication of JP2010118961A publication Critical patent/JP2010118961A/ja
Publication of JP2010118961A5 publication Critical patent/JP2010118961A5/ja
Application granted granted Critical
Publication of JP5167079B2 publication Critical patent/JP5167079B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
    • H04N21/4405—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving video stream decryption
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/167—Systems rendering the television signal unintelligible and subsequently intelligible
    • H04N7/1675—Providing digital key or authorisation information for generation or regeneration of the scrambling sequence
    • 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)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)
  • Television Signal Processing For Recording (AREA)
JP2008291496A 2008-11-13 2008-11-13 受信装置及びその制御方法 Expired - Fee Related JP5167079B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2008291496A JP5167079B2 (ja) 2008-11-13 2008-11-13 受信装置及びその制御方法
US12/576,449 US8265269B2 (en) 2008-11-13 2009-10-09 Receiving apparatus and method for controlling the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008291496A JP5167079B2 (ja) 2008-11-13 2008-11-13 受信装置及びその制御方法

Publications (3)

Publication Number Publication Date
JP2010118961A JP2010118961A (ja) 2010-05-27
JP2010118961A5 JP2010118961A5 (enExample) 2012-01-05
JP5167079B2 true JP5167079B2 (ja) 2013-03-21

Family

ID=42165229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2008291496A Expired - Fee Related JP5167079B2 (ja) 2008-11-13 2008-11-13 受信装置及びその制御方法

Country Status (2)

Country Link
US (1) US8265269B2 (enExample)
JP (1) JP5167079B2 (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5219688B2 (ja) * 2008-08-11 2013-06-26 キヤノン株式会社 放送受信装置、及びその制御方法
KR101213301B1 (ko) * 2009-09-29 2012-12-17 한국전자통신연구원 다운로더블 제한 수신 시스템에서의 재인증 처리 장치 및 방법
US10193873B2 (en) 2010-09-30 2019-01-29 Comcast Cable Communications, Llc Key derivation for secure communications
US20170005993A9 (en) * 2012-02-08 2017-01-05 Vixs Systems, Inc. Content access device with programmable interface and methods for use therewith
US9961384B2 (en) * 2012-12-20 2018-05-01 Nagravision S.A. Method and a security module configured to enforce processing of management messages
CN104135477B (zh) * 2014-07-21 2017-09-19 苏州锐盾信息科技有限公司 云计算环境下机密信息的存储方法
CN108881205B (zh) * 2018-06-08 2020-11-17 西安理工大学 一种hls流媒体的安全播放系统及播放方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10191302A (ja) 1996-12-27 1998-07-21 Matsushita Electric Ind Co Ltd デジタル衛星放送受信装置
JP3565715B2 (ja) * 1998-07-02 2004-09-15 松下電器産業株式会社 放送システムと放送送受信装置
JP4714980B2 (ja) * 2000-10-17 2011-07-06 ソニー株式会社 コンテンツ受信装置及びコンテンツ受信方法
JP3965126B2 (ja) * 2002-03-20 2007-08-29 松下電器産業株式会社 コンテンツを再生する再生装置
JP4690696B2 (ja) 2004-10-29 2011-06-01 株式会社東芝 デジタル放送受信装置および方法
CN101496341B (zh) * 2006-07-27 2011-11-30 松下电器产业株式会社 终端装置、服务器装置以及内容分发系统
WO2008136077A1 (ja) * 2007-04-20 2008-11-13 Japan Broadcasting Corporation スクランブル鍵管理装置、スクランブル鍵管理情報送信装置、スクランブル鍵出力管理方法、スクランブル鍵管理プログラム、ライセンス情報管理装置、ライセンス管理情報送信装置、ライセンス情報出力管理方法及びライセンス情報管理プログラム

Also Published As

Publication number Publication date
US20100119060A1 (en) 2010-05-13
US8265269B2 (en) 2012-09-11
JP2010118961A (ja) 2010-05-27

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