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BR0008324A - Método para operar um sistema de acesso condicional para aplicações de difusão - Google Patents

Método para operar um sistema de acesso condicional para aplicações de difusão

Info

Publication number
BR0008324A
BR0008324A BR0008324-0A BR0008324A BR0008324A BR 0008324 A BR0008324 A BR 0008324A BR 0008324 A BR0008324 A BR 0008324A BR 0008324 A BR0008324 A BR 0008324A
Authority
BR
Brazil
Prior art keywords
keys
key
sent
terminals
conditional access
Prior art date
Application number
BR0008324-0A
Other languages
English (en)
Inventor
Andrew Augustine Wajs
Robert Fransdonk
Original Assignee
Irdeto Access Bv
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 Irdeto Access Bv filed Critical Irdeto Access Bv
Publication of BR0008324A publication Critical patent/BR0008324A/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]
    • H04N21/40—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
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44236—Monitoring of piracy processes or activities
    • 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
    • H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
    • H04N21/4367—Establishing a secure communication between the client and a peripheral device or smart card
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing
    • H04N7/163—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing by receiver means only
    • 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)
  • Computer Security & Cryptography (AREA)
  • Health & Medical Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Virology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Patente de Invenção: "MéTODO PARA OPERAR UM SISTEMA DE ACESSO CONDICIONAL PARA APLICAçõES DE DIFUSãO". Em um método para operar um sistema de acesso condicional para aplicações de difusão, o referido sistema de acesso condicional compreendendo um número de assinantes, cada assinante tendo um terminal, incluindo um módulo de acesso condicional e um dispositivo seguro para armazenar autorizações, um sinal fonte é criptografado usando uma primeira chave (C~ W~). O sinal fonte criptografado é difundido para recebimento pelos terminais, em que mensagens de controle de autorizações (ECM's) são enviadas para os dispositivos seguros, as ECM's compreendendo as primeiras chaves (C~ W~) criptografadas usando uma chave de serviço (P~ T~). As mensagens de gerenciamento de autorizações (EMM's) são enviadas para os dispositivos seguros, proporcionando a chave de serviço (P~ T~) requerida para descriptografar as primeiras chaves criptografadas (C~ W~). Um dispositivo seguro fendido, que é usado de maneira não autorizada é rastreado por intermédio do envio de chaves diferentes requeridas para obter as primeiras chaves para terminais ou grupos de terminais diferentes e monitorando a informação de chave proporcionada por um pirata. Com essa finalidade as EMM's de busca são enviadas para pelo menos uma parte dos terminais, as EMM's de busca proporcionando pelo menos a chave de serviço (P~ T~) e uma chave fictícia (P~ D1~ ou P~ D2~). Pelo menos as EMM's de busca compreendem identificadores identificando as chaves (P~ T~ e P~ D1~ ou P~ D2~), em que primeiras EMM's de busca com as chaves (P~ T~ e P~ D1~) são enviadas para uma primeira parte dos terminais e segundas EMM's de busca com as chaves (P~ T~ e P~ D2~) são enviadas para uma segunda parte dos terminais. Uma ECM identificando a chave de serviço (P~ T~) a ser usada para descriptografar a primeira chave criptografada (C~ W~) é enviada para todos os dispositivos seguros exatamente antes que a primeira chave (C~ W~) seja necessária para descriptografar o sinal fonte.
BR0008324-0A 1999-12-22 2000-12-18 Método para operar um sistema de acesso condicional para aplicações de difusão BR0008324A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP99204481A EP1111923A1 (en) 1999-12-22 1999-12-22 Method for operating a conditional access system for broadcast applications
PCT/EP2000/013394 WO2001047271A2 (en) 1999-12-22 2000-12-18 Method for operating a conditional access system for broadcast applications

Publications (1)

Publication Number Publication Date
BR0008324A true BR0008324A (pt) 2002-01-29

Family

ID=8241059

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0008324-0A BR0008324A (pt) 1999-12-22 2000-12-18 Método para operar um sistema de acesso condicional para aplicações de difusão

Country Status (15)

Country Link
US (1) US7155611B2 (pt)
EP (2) EP1111923A1 (pt)
JP (1) JP4818559B2 (pt)
CN (2) CN100366083C (pt)
AU (1) AU776108B2 (pt)
BR (1) BR0008324A (pt)
CA (1) CA2364398C (pt)
HK (1) HK1047842B (pt)
HU (1) HUP0200126A2 (pt)
MX (1) MXPA01008522A (pt)
NZ (1) NZ513568A (pt)
RU (1) RU2001125927A (pt)
TW (1) TW554627B (pt)
WO (1) WO2001047271A2 (pt)
ZA (1) ZA200106073B (pt)

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FR2825877B1 (fr) * 2001-06-12 2003-09-19 Canal Plus Technologies Procede de controle d'acces a un programme crypte
US20030200548A1 (en) * 2001-12-27 2003-10-23 Paul Baran Method and apparatus for viewer control of digital TV program start time
FR2835371B1 (fr) * 2002-01-31 2004-04-16 Viaccess Sa Procede et dispositif de transmission de message de gestion de titre d'acces
AU2003260888A1 (en) * 2002-09-27 2004-04-19 Nagravision Sa Conditional access data decrypting system
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US20040151315A1 (en) * 2002-11-06 2004-08-05 Kim Hee Jean Streaming media security system and method
FR2850822A1 (fr) * 2003-02-04 2004-08-06 Canal Plus Technologies Systeme de television a peage, procede de revocation de droits dans un tel systeme, decodeur et carte a puce associes, et message transmis a un tel decodeur
WO2004082286A1 (fr) * 2003-03-12 2004-09-23 Kudelski S.A. Systeme de television a peage, procede de diffusion de programmes audiovisuels brouilles, decodeur et carte a puce mettant en oeuvre ce procede
US20050172132A1 (en) 2004-01-30 2005-08-04 Chen Sherman (. Secure key authentication and ladder system
US9461825B2 (en) 2004-01-30 2016-10-04 Broadcom Corporation Method and system for preventing revocation denial of service attacks
US9094699B2 (en) * 2004-02-05 2015-07-28 Broadcom Corporation System and method for security key transmission with strong pairing to destination client
EP1564994A1 (fr) * 2004-02-13 2005-08-17 Nagravision S.A. Méthode de gestion des droits d'abonnés à un système de télévision à péage multi-operateurs
US7487349B2 (en) * 2004-04-23 2009-02-03 Nagracard S.A. Method for securing a ciphered content transmitted by a broadcaster
FR2872651B1 (fr) * 2004-07-01 2006-09-22 Viaccess Sa Procede de transmission d'un message contenant une description d'une action a executer dans un equipement recepteur
KR100693749B1 (ko) 2005-04-25 2007-03-12 에스케이 텔레콤주식회사 수신 제한 시스템의 운용을 위한 키 전송 및 인증 시스템및 방법
KR100732668B1 (ko) 2005-05-27 2007-06-27 삼성전자주식회사 접근 제한 시스템의 보안 디바이스와, 헤드 엔드 및 접근제한 시스템의 불법 사용을 제어하는 방법
KR100755435B1 (ko) * 2005-10-04 2007-09-04 삼성전자주식회사 디지털 방송 제한 수신 단말기 및 그 방법
KR100744340B1 (ko) * 2005-10-13 2007-07-30 삼성전자주식회사 디지털 방송 제한 수신 시스템 및 그 방법
KR101414348B1 (ko) * 2006-05-16 2014-07-01 교세라 가부시키가이샤 스트림 생성 방법 및 방송 수신 장치
FR2905215B1 (fr) * 2006-08-23 2009-01-09 Viaccess Sa Procede de transmission d'une donnee complementaire a un terminal de reception
US8824685B2 (en) * 2007-10-15 2014-09-02 Sony Corporation Method for detection of a hacked decoder
FR2923669B1 (fr) * 2007-11-09 2010-01-08 Viaccess Sa Procede de conditionnement et de controle d'acces a des contenus en codage hierarchique, processeur et emetteur pour ce procede
US8675872B2 (en) * 2007-11-28 2014-03-18 Echostar Technologies L.L.C. Secure content distribution apparatus, systems, and methods
US20090202079A1 (en) * 2008-02-11 2009-08-13 Nokia Corporation Method, apparatus and computer program product for providing mobile broadcast service protection
EP2227014B1 (en) 2009-03-02 2019-10-02 Irdeto B.V. Securely providing secret data from a sender to a receiver
EP2227015B1 (en) 2009-03-02 2018-01-10 Irdeto B.V. Conditional entitlement processing for obtaining a control word
US8997252B2 (en) * 2009-06-04 2015-03-31 Google Technology Holdings LLC Downloadable security based on certificate status
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JP3182617B2 (ja) * 1991-06-05 2001-07-03 沖電気工業株式会社 暗号化通信方式
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Also Published As

Publication number Publication date
CA2364398A1 (en) 2001-06-28
CN100366083C (zh) 2008-01-30
AU4049501A (en) 2001-07-03
EP1111923A1 (en) 2001-06-27
WO2001047271A2 (en) 2001-06-28
TW554627B (en) 2003-09-21
US7155611B2 (en) 2006-12-26
US20020126847A1 (en) 2002-09-12
ZA200106073B (en) 2002-12-19
HUP0200126A2 (hu) 2002-05-29
JP4818559B2 (ja) 2011-11-16
EP1238537A2 (en) 2002-09-11
MXPA01008522A (es) 2003-06-06
CN1357197A (zh) 2002-07-03
CN1984312A (zh) 2007-06-20
JP2003518843A (ja) 2003-06-10
NZ513568A (en) 2003-11-28
AU776108B2 (en) 2004-08-26
CA2364398C (en) 2010-02-23
HK1047842B (zh) 2008-10-31
WO2001047271A3 (en) 2002-01-17
HK1047842A1 (zh) 2003-03-07
RU2001125927A (ru) 2003-07-20

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 13A ANUIDADE

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2249 DE 11/02/2014.