HK1111021A1 - Method for controlling access to encrypted data - Google Patents

Method for controlling access to encrypted data

Info

Publication number
HK1111021A1
HK1111021A1 HK08105187.4A HK08105187A HK1111021A1 HK 1111021 A1 HK1111021 A1 HK 1111021A1 HK 08105187 A HK08105187 A HK 08105187A HK 1111021 A1 HK1111021 A1 HK 1111021A1
Authority
HK
Hong Kong
Prior art keywords
sending
multimedia unit
word
encrypted data
controlling access
Prior art date
Application number
HK08105187.4A
Other languages
English (en)
Inventor
Philippe Stransky
Original Assignee
Nagravision Sa
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 Nagravision Sa filed Critical Nagravision Sa
Publication of HK1111021A1 publication Critical patent/HK1111021A1/xx

Links

Classifications

    • 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
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/234—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs
    • H04N21/2347—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption
    • H04N21/23473—Processing of video elementary streams, e.g. splicing of video streams or manipulating encoded video stream scene graphs involving video stream encryption by pre-encrypting
    • 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
    • H04N21/26606—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 entitlement messages, e.g. Entitlement Control Message [ECM] or Entitlement Management Message [EMM]
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Storage Device Security (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Communication Control (AREA)
  • Control Of Transmission Device (AREA)
HK08105187.4A 2005-07-07 2008-05-08 Method for controlling access to encrypted data HK1111021A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05106186A EP1742475A1 (fr) 2005-07-07 2005-07-07 Méthode de contrôle d'accès à des données chiffrées
PCT/EP2006/063989 WO2007006736A1 (fr) 2005-07-07 2006-07-06 Methode de controle d'acces a des donnees chiffrees

Publications (1)

Publication Number Publication Date
HK1111021A1 true HK1111021A1 (en) 2008-07-25

Family

ID=35447707

Family Applications (1)

Application Number Title Priority Date Filing Date
HK08105187.4A HK1111021A1 (en) 2005-07-07 2008-05-08 Method for controlling access to encrypted data

Country Status (18)

Country Link
US (1) US7986781B2 (pt)
EP (2) EP1742475A1 (pt)
JP (1) JP2008545308A (pt)
KR (1) KR101342743B1 (pt)
CN (1) CN101218823B (pt)
AT (1) ATE443969T1 (pt)
AU (1) AU2006268684A1 (pt)
BR (1) BRPI0613791A8 (pt)
CA (1) CA2614109C (pt)
DE (1) DE602006009398D1 (pt)
ES (1) ES2331925T3 (pt)
HK (1) HK1111021A1 (pt)
IL (1) IL188333A (pt)
MX (1) MX2008000003A (pt)
PL (1) PL1900212T3 (pt)
PT (1) PT1900212E (pt)
RU (1) RU2408157C2 (pt)
WO (1) WO2007006736A1 (pt)

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FR2959905B1 (fr) * 2010-05-04 2012-07-27 Viaccess Sa Procede de dechiffrement,de transmission et de reception de mots de controle, support d'enregistrement et serveur de mots de controle pour la mise en oeuvre de ces procedes
FR2963191B1 (fr) * 2010-07-23 2012-12-07 Viaccess Sa Procede de detection d'une utilisation illicite d'un processeur de securite
US8687807B2 (en) * 2011-01-26 2014-04-01 Nagrastar, L.L.C. Cascading dynamic crypto periods
US9503785B2 (en) 2011-06-22 2016-11-22 Nagrastar, Llc Anti-splitter violation conditional key change
US9392319B2 (en) * 2013-03-15 2016-07-12 Nagrastar Llc Secure device profiling countermeasures
EP2869578A1 (fr) * 2013-11-01 2015-05-06 Nagravision S.A. Méthode et dispositif de distribution de licences multimédias au sein d un système de distribution d un service multimédia sécurisé
US10045040B2 (en) * 2016-04-03 2018-08-07 Cisco Technology, Inc. Interleaved watermarking
US9713070B1 (en) * 2016-08-18 2017-07-18 Cisco Technology, Inc. Regional conditional access
KR20180085212A (ko) 2017-01-18 2018-07-26 삼성전자주식회사 전자 장치, 그의 영상 처리 방법 및 비일시적 컴퓨터 판독가능 기록매체
CN117014208B (zh) * 2023-08-09 2024-04-09 海光信息技术股份有限公司 数据加密方法、装置、系统、电子设备及存储介质

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FR2631193B1 (fr) * 1988-05-06 1994-09-16 Europ Rech Electr Lab Procede d'embrouillage et de desembrouillage de signaux video composites, et dispositif de mise en oeuvre
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Also Published As

Publication number Publication date
EP1742475A1 (fr) 2007-01-10
IL188333A0 (en) 2008-04-13
DE602006009398D1 (de) 2009-11-05
PT1900212E (pt) 2009-12-07
PL1900212T3 (pl) 2010-02-26
US7986781B2 (en) 2011-07-26
ES2331925T3 (es) 2010-01-20
AU2006268684A1 (en) 2007-01-18
CN101218823A (zh) 2008-07-09
CA2614109A1 (en) 2007-01-18
RU2007148551A (ru) 2009-08-20
JP2008545308A (ja) 2008-12-11
IL188333A (en) 2011-09-27
WO2007006736A1 (fr) 2007-01-18
BRPI0613791A8 (pt) 2018-02-06
US20080192927A1 (en) 2008-08-14
CA2614109C (en) 2013-11-19
KR20080024518A (ko) 2008-03-18
ATE443969T1 (de) 2009-10-15
MX2008000003A (es) 2008-04-22
BRPI0613791A2 (pt) 2012-12-11
RU2408157C2 (ru) 2010-12-27
EP1900212B1 (fr) 2009-09-23
KR101342743B1 (ko) 2013-12-19
CN101218823B (zh) 2010-05-26
EP1900212A1 (fr) 2008-03-19

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