ES2605112T3 - Método para identificar el origen de un módulo de seguridad en un sistema descodificador de televisión de pago - Google Patents

Método para identificar el origen de un módulo de seguridad en un sistema descodificador de televisión de pago Download PDF

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Publication number
ES2605112T3
ES2605112T3 ES12713129.0T ES12713129T ES2605112T3 ES 2605112 T3 ES2605112 T3 ES 2605112T3 ES 12713129 T ES12713129 T ES 12713129T ES 2605112 T3 ES2605112 T3 ES 2605112T3
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ES
Spain
Prior art keywords
control word
stream
security module
current
bit
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.)
Active
Application number
ES12713129.0T
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English (en)
Inventor
Henri Kudelski
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.)
Nagravision SARL
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
Application granted granted Critical
Publication of ES2605112T3 publication Critical patent/ES2605112T3/es
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04N21/25—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
    • 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
    • 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
    • H04N21/45—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
    • 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
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • 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]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • H04N21/835—Generation of protective data, e.g. certificates
    • H04N21/8358—Generation of protective data, e.g. certificates involving watermark

Landscapes

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

Abstract

Método para identificar el origen de un módulo de seguridad en un sistema decodificador de TV de pago, que incluye las etapas de: - recibir por el sistema de decodificador de TV de pago un servicio que comprende al menos un primer stream, un segundo stream y un stream de palabra de control, con el segundo stream siendo un duplicado del primer stream, dicho primer stream estando encriptado por una primera palabra de control (CW1) y dicho segundo stream estando encriptado por una segunda palabra de control (CW2), - extraer, desde el stream de palabra de control, mensajes de autorización que contienen al menos una palabra de control principal (CW) que permite obtener la primera y la segunda palabra de control, y condiciones de acceso, - transferir el stream de palabra de control al módulo de seguridad, - extraer los mensajes de autorización del stream de palabra de control y controlar las condiciones de acceso, - si se cumplen las condiciones de acceso, determinar la primeras y segunda palabras de control a partir de la palabra de control principal en el mensaje de autorización, - determinar un parámetro interno del módulo de seguridad, este parámetro interno siendo único para cada módulo de seguridad, - seleccionar una palabra de control actual a partir de la primera o la segunda palabra de control basada en parte del parámetro interno, correspondiente al primer o segundo stream, - transmitir la palabra de control actual al decodificador de TV de pago, - seleccionar un stream actual desde el primer o segundo stream conforme a la selección de la primera o la segunda palabra de control, - desencriptar el stream actual con la palabra de control actual, caracterizado por el hecho de que el parámetro interno es una dirección única del módulo de seguridad y que tiene una pluralidad de bits, y el método comprende los pasos de: a. inicializar un registro de barrido (CNTR) apuntando hacia el primer bit de la dirección única, b. utilizar el registro de barrido para apuntar a un bit de la dirección única, c. utilizar el estado de dicho bit para seleccionar la palabra de control actual, d. incrementar el registro de barrido para apuntar al bit siguiente de la dirección única cada vez que se realiza la selección de una palabra de control corriente a partir de la primera o la segunda palabra de control, e. repetir los pasos b a d hasta que todos los bits de la dirección única han sido usados, y reinicializar del registro de barrido.

Description

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Claims (1)

  1. imagen1
    imagen2
ES12713129.0T 2011-04-15 2012-04-02 Método para identificar el origen de un módulo de seguridad en un sistema descodificador de televisión de pago Active ES2605112T3 (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201161475754P 2011-04-15 2011-04-15
US201161475754P 2011-04-15
PCT/EP2012/055938 WO2012139913A1 (en) 2011-04-15 2012-04-02 Method to identify the origin of a security module in pay-tv decoder system

Publications (1)

Publication Number Publication Date
ES2605112T3 true ES2605112T3 (es) 2017-03-13

Family

ID=45937357

Family Applications (1)

Application Number Title Priority Date Filing Date
ES12713129.0T Active ES2605112T3 (es) 2011-04-15 2012-04-02 Método para identificar el origen de un módulo de seguridad en un sistema descodificador de televisión de pago

Country Status (13)

Country Link
US (1) US10419800B2 (es)
EP (1) EP2697979B1 (es)
KR (1) KR101925653B1 (es)
CN (1) CN103503464B (es)
BR (1) BR112013024763A2 (es)
CO (1) CO6811819A2 (es)
DK (1) DK2697979T3 (es)
ES (1) ES2605112T3 (es)
HU (1) HUE031201T2 (es)
MX (1) MX2013011549A (es)
PL (1) PL2697979T3 (es)
PT (1) PT2697979T (es)
WO (1) WO2012139913A1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9106965B2 (en) 2012-12-27 2015-08-11 Echostar Technologies L.L.C. Using idle resources to reduce channel change times
US9854306B2 (en) 2014-07-28 2017-12-26 Echostar Technologies L.L.C. Methods and systems for content navigation among programs presenting advertising content
US9756378B2 (en) 2015-01-07 2017-09-05 Echostar Technologies L.L.C. Single file PVR per service ID
US9635413B2 (en) 2015-09-23 2017-04-25 Echostar Technologies L.L.C. Advance decryption key acquisition for streaming media content

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271476A (en) * 1979-07-17 1981-06-02 International Business Machines Corporation Method and apparatus for rotating the scan format of digital images
US7224798B2 (en) * 1995-04-03 2007-05-29 Scientific-Atlanta, Inc. Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system
US7010125B2 (en) 2001-01-26 2006-03-07 Interntional Business Machines Corporation Method for tracing traitor receivers in a broadcast encryption system
US20020116705A1 (en) * 2001-02-20 2002-08-22 Perlman Stephen G. System and method for processing conditional access data
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
EP1780937A1 (en) * 2005-11-01 2007-05-02 Black & Decker, Inc. Method and system for authenticating a smart battery system
EP1958430A1 (en) * 2005-12-05 2008-08-20 Thomson Licensing Watermarking encoded content
WO2008118146A1 (en) * 2007-03-23 2008-10-02 Thomson Licensing Modifying a coded bitstream
KR101518999B1 (ko) * 2007-06-14 2015-05-12 톰슨 라이센싱 코딩된 비트스트림의 수정
US8824685B2 (en) * 2007-10-15 2014-09-02 Sony Corporation Method for detection of a hacked decoder
US8839284B2 (en) * 2008-12-31 2014-09-16 Time Warner Cable Enterprises Llc Methods and apparatus for controlling content distribution
EP2373018B1 (en) * 2010-03-05 2012-05-09 Nagravision S.A. A method for controlling access to a plurality of channels by a receiver/decoder
US20120191724A1 (en) * 2011-01-26 2012-07-26 Tucek Joseph A Storage of data objects based on a time of creation
US8959544B2 (en) * 2012-03-15 2015-02-17 Echostar Technologies L.L.C. Descrambling of multiple television channels

Also Published As

Publication number Publication date
BR112013024763A2 (pt) 2017-06-27
CO6811819A2 (es) 2013-12-16
EP2697979A1 (en) 2014-02-19
EP2697979B1 (en) 2016-09-28
WO2012139913A1 (en) 2012-10-18
KR20140015427A (ko) 2014-02-06
MX2013011549A (es) 2013-11-01
US20140229972A1 (en) 2014-08-14
US10419800B2 (en) 2019-09-17
DK2697979T3 (en) 2017-01-23
PL2697979T3 (pl) 2017-04-28
HUE031201T2 (en) 2017-07-28
CN103503464B (zh) 2016-11-09
KR101925653B1 (ko) 2018-12-05
CN103503464A (zh) 2014-01-08
PT2697979T (pt) 2016-12-23

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