BR112014012086A8 - método, sistema criptográfico e módulo de segurança para decodificar pacotes de conteúdo de um fluxo de transporte digital - Google Patents

método, sistema criptográfico e módulo de segurança para decodificar pacotes de conteúdo de um fluxo de transporte digital

Info

Publication number
BR112014012086A8
BR112014012086A8 BR112014012086A BR112014012086A BR112014012086A8 BR 112014012086 A8 BR112014012086 A8 BR 112014012086A8 BR 112014012086 A BR112014012086 A BR 112014012086A BR 112014012086 A BR112014012086 A BR 112014012086A BR 112014012086 A8 BR112014012086 A8 BR 112014012086A8
Authority
BR
Brazil
Prior art keywords
security module
digital transport
transport stream
cryptographic system
content packets
Prior art date
Application number
BR112014012086A
Other languages
English (en)
Other versions
BR112014012086A2 (pt
Inventor
Wendling Bertrand
Le Buhan Corinne
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 BR112014012086A2 publication Critical patent/BR112014012086A2/pt
Publication of BR112014012086A8 publication Critical patent/BR112014012086A8/pt

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
    • 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
    • H04N21/254—Management at additional data server, e.g. shopping server, rights management server
    • H04N21/2541—Rights Management
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4181—External card to be used in combination with the client device, e.g. for conditional access for conditional access
    • 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
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H04N21/42607—Internal components of the client ; Characteristics thereof for processing the incoming bitstream
    • H04N21/42623—Internal components of the client ; Characteristics thereof for processing the incoming bitstream involving specific decryption arrangements
    • 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
    • H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
    • H04N21/4353—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving decryption of additional data
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Databases & Information Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

resumo “método, sistema criptográfico e módulo de segurança para decodificar pacotes de conteúdo de um fluxo de transporte digital” trata-se de um método e sistema criptográfico para decodificar pacotes de conteúdo (15) incluídos em um fluxo de transporte digital (10) junto com mensagens de acesso condicionado (12) e dados de cabeçalho (15’) pertencentes aos referidos pacotes de conteúdo (15). o referido método requer um algoritmo de decifração (35), o qual é processado por um decodificador (36) de uma unidade multimídia (30) usando um vetor de inicialização (33), como primeira entrada, e uma palavra de controle (13), como segunda entrada. a referida unidade de multimídia (30) conecta-se a um módulo de segurança (40) para processar as mensagens de acesso condicionado (12) e extrair delas as referidas palavras de controle (13). o referido vetor de inicialização (33), ou dados intermediários (33’) para determinar o referido vetor de inicialização (33), é o resultado da função criptográfica (44) com base em ao menos uma variável (43) extraída do fluxo de transporte digital (10) e processada no módulo de segurança (40).
BR112014012086A 2011-11-22 2012-11-20 método, sistema criptográfico e módulo de segurança para decodificar pacotes de conteúdo de um fluxo de transporte digital BR112014012086A8 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161562462P 2011-11-22 2011-11-22
EP11190121.1A EP2597883A1 (en) 2011-11-22 2011-11-22 Method, cryptographic system and security module for descrambling content packets of a digital transport stream
PCT/EP2012/073064 WO2013076057A1 (en) 2011-11-22 2012-11-20 Method, cryptographic system and security module for descrambling content packets of a digital transport stream

Publications (2)

Publication Number Publication Date
BR112014012086A2 BR112014012086A2 (pt) 2017-06-13
BR112014012086A8 true BR112014012086A8 (pt) 2017-06-20

Family

ID=45093407

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112014012086A BR112014012086A8 (pt) 2011-11-22 2012-11-20 método, sistema criptográfico e módulo de segurança para decodificar pacotes de conteúdo de um fluxo de transporte digital

Country Status (8)

Country Link
US (1) US9294788B2 (pt)
EP (2) EP2597883A1 (pt)
KR (1) KR101980928B1 (pt)
CN (1) CN103988513B (pt)
BR (1) BR112014012086A8 (pt)
CA (1) CA2856456C (pt)
WO (1) WO2013076057A1 (pt)
ZA (1) ZA201403284B (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9473463B2 (en) * 2014-07-29 2016-10-18 Combined Conditional Access Development & Support, LLC Control word and associated entitlement control message caching and reuse
US11153070B2 (en) 2018-09-11 2021-10-19 International Business Machines Corporation Access to data broadcast in encrypted form based on blockchain

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8704882D0 (en) * 1987-03-03 1987-04-08 Hewlett Packard Co Secure messaging systems
US7233948B1 (en) * 1998-03-16 2007-06-19 Intertrust Technologies Corp. Methods and apparatus for persistent control and protection of content
WO1999048296A1 (en) * 1998-03-16 1999-09-23 Intertrust Technologies Corporation Methods and apparatus for continuous control and protection of media content
EP1662788A1 (fr) * 2004-11-24 2006-05-31 Nagravision SA Unité de traitement de données audio/vidéo numériques et méthode de contrôle d'accès audites données
US7359679B2 (en) * 2005-01-28 2008-04-15 Microsoft Corporation Multi-access system and method using multi-sectored antenna
JP2007158967A (ja) * 2005-12-07 2007-06-21 Ntt Data Corp 情報処理装置、耐タンパーデバイス、暗号処理方法及びコンピュータプログラム
US8345713B2 (en) * 2006-10-25 2013-01-01 Verizon Patent And Licensing Inc. Methods and apparatus for content scrambling in a communications system
WO2008118474A2 (en) * 2007-03-26 2008-10-02 Sibeam, Inc. Extensions to adaptive beam-steering method
JP5312108B2 (ja) * 2009-03-12 2013-10-09 キヤノン株式会社 通信装置及びその制御方法

Also Published As

Publication number Publication date
CN103988513B (zh) 2017-07-28
EP2783515A1 (en) 2014-10-01
EP2597883A1 (en) 2013-05-29
KR20140099240A (ko) 2014-08-11
CA2856456C (en) 2020-01-14
US20140351848A1 (en) 2014-11-27
KR101980928B1 (ko) 2019-05-21
CN103988513A (zh) 2014-08-13
ZA201403284B (en) 2015-08-26
BR112014012086A2 (pt) 2017-06-13
CA2856456A1 (en) 2013-05-30
US9294788B2 (en) 2016-03-22
WO2013076057A1 (en) 2013-05-30

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B06F Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]
B06U Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE.

B08G Application fees: restoration [chapter 8.7 patent gazette]
B350 Update of information on the portal [chapter 15.35 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time