MX2007000299A - Metodo para desaleatorizar un objeto de datos de contenido aleatorizado. - Google Patents

Metodo para desaleatorizar un objeto de datos de contenido aleatorizado.

Info

Publication number
MX2007000299A
MX2007000299A MX2007000299A MX2007000299A MX2007000299A MX 2007000299 A MX2007000299 A MX 2007000299A MX 2007000299 A MX2007000299 A MX 2007000299A MX 2007000299 A MX2007000299 A MX 2007000299A MX 2007000299 A MX2007000299 A MX 2007000299A
Authority
MX
Mexico
Prior art keywords
key
descrambling
data object
content data
scrambled content
Prior art date
Application number
MX2007000299A
Other languages
English (en)
Inventor
Andrew Agustine Wajs
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 MX2007000299A publication Critical patent/MX2007000299A/es

Links

Classifications

    • 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
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • 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
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0822—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using key encryption key
    • 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
    • H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0825—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) using asymmetric-key encryption or public key infrastructure [PKI], e.g. key signature or public key certificates
    • 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
    • H04L9/14—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols using a plurality of keys or algorithms
    • 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
    • H04L9/32—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
    • H04L9/3247—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols including means for verifying the identity or authority of a user of the system or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials involving digital signatures
    • 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
    • H04N21/21—Server components or server architectures
    • H04N21/226—Characteristics of the server or Internal components of the server
    • H04N21/2265—Server identification by a unique number or address, e.g. serial number
    • 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]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/63—Control signaling related to video distribution between client, server and network components; Network processes for video distribution between server and clients or between remote clients, e.g. transmitting basic layer and enhancement layers over different transmission paths, setting up a peer-to-peer communication via Internet between remote STB's; Communication protocols; Addressing
    • H04N21/633—Control signals issued by server directed to the network components or client
    • H04N21/6332—Control signals issued by server directed to the network components or client directed to client
    • H04N21/6334—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key
    • H04N21/63345—Control signals issued by server directed to the network components or client directed to client for authorisation, e.g. by transmitting a key by transmitting keys
    • 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)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Storage Device Security (AREA)
  • Collating Specific Patterns (AREA)

Abstract

En un método para desaleatorizar un objeto de datos de contenido aleatorizado, por lo menos una sección del objeto de datos de contenido aleatorizado es desaleatorizada al aplicar al menos una operación de desencriptación bajo una clave al menos parcialmente derivada de una clave de desaleatorización de contenido; por lo menos una clave de desaleatorización de contenido se obtiene de un mensaje recibido de un subsistema de acceso condicional sobre un canal de comunicación de datos; par lo menos un criptograma de datos que se puede obtener de al menos una clave de desaleatorización de contenido en el mensaje, cada uno de los criptogramas son portados en el mensaje, es desencriptado bajo una clave de canal asociado; una primera clave se utiliza para establecer cada clave de canal; por lo menos la sección del objeto de datos de contenido aleatorizado es desaleatorizada, al aplicar una operación de desencriptación adicional bajo una clave al menos parcialmente derivada de la primera clave.
MX2007000299A 2006-01-03 2007-01-08 Metodo para desaleatorizar un objeto de datos de contenido aleatorizado. MX2007000299A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06100043A EP1804508B1 (en) 2006-01-03 2006-01-03 Method of descrambling a scrambled content data object

Publications (1)

Publication Number Publication Date
MX2007000299A true MX2007000299A (es) 2008-11-14

Family

ID=36501900

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2007000299A MX2007000299A (es) 2006-01-03 2007-01-08 Metodo para desaleatorizar un objeto de datos de contenido aleatorizado.

Country Status (16)

Country Link
US (1) US8090104B2 (es)
EP (1) EP1804508B1 (es)
JP (1) JP5106845B2 (es)
KR (1) KR20070073622A (es)
CN (1) CN101005356B (es)
AT (1) ATE451791T1 (es)
AU (1) AU2007200006B2 (es)
BR (1) BRPI0700001A (es)
CA (1) CA2572345C (es)
DE (1) DE602006010968D1 (es)
ES (1) ES2337920T3 (es)
MX (1) MX2007000299A (es)
MY (1) MY144832A (es)
RU (1) RU2433548C2 (es)
TW (1) TW200840361A (es)
ZA (1) ZA200700061B (es)

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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
EP2219374A1 (en) * 2009-02-13 2010-08-18 Irdeto Access B.V. Securely providing a control word from a smartcard to a conditional access module
US11076189B2 (en) 2009-03-30 2021-07-27 Time Warner Cable Enterprises Llc Personal media channel apparatus and methods
US9215423B2 (en) 2009-03-30 2015-12-15 Time Warner Cable Enterprises Llc Recommendation engine apparatus and methods
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US8813124B2 (en) 2009-07-15 2014-08-19 Time Warner Cable Enterprises Llc Methods and apparatus for targeted secondary content insertion
US8701138B2 (en) 2010-04-23 2014-04-15 Time Warner Cable Enterprises Llc Zone control methods and apparatus
FR2967002B1 (fr) * 2010-10-27 2012-12-14 Viaccess Sa Procede de reception d'un contenu multimedia embrouille a l'aide de mots de controle
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US20130227283A1 (en) * 2012-02-23 2013-08-29 Louis Williamson Apparatus and methods for providing content to an ip-enabled device in a content distribution network
US9426123B2 (en) 2012-02-23 2016-08-23 Time Warner Cable Enterprises Llc Apparatus and methods for content distribution to packet-enabled devices via a network bridge
US8838149B2 (en) 2012-04-02 2014-09-16 Time Warner Cable Enterprises Llc Apparatus and methods for ensuring delivery of geographically relevant content
US9467723B2 (en) 2012-04-04 2016-10-11 Time Warner Cable Enterprises Llc Apparatus and methods for automated highlight reel creation in a content delivery network
US9106405B1 (en) * 2012-06-25 2015-08-11 Amazon Technologies, Inc. Multi-user secret decay
US9904788B2 (en) * 2012-08-08 2018-02-27 Amazon Technologies, Inc. Redundant key management
US9390279B2 (en) * 2012-09-11 2016-07-12 Nextnav, Llc Systems and methods for providing conditional access to transmitted information
KR101852999B1 (ko) 2014-07-11 2018-04-30 엘지전자 주식회사 방송 수신 장치, 방송 수신 장치의 동작 방법, 제한 수신 모듈 및 제한 수신 모듈의 동작 방법
US10116676B2 (en) 2015-02-13 2018-10-30 Time Warner Cable Enterprises Llc Apparatus and methods for data collection, analysis and service modification based on online activity
US10411900B2 (en) * 2016-07-12 2019-09-10 Electronics And Telecommunications Research Institute Control word protection method for conditional access system
US11212593B2 (en) 2016-09-27 2021-12-28 Time Warner Cable Enterprises Llc Apparatus and methods for automated secondary content management in a digital network
TWI633777B (zh) * 2016-12-13 2018-08-21 威盛電子股份有限公司 傳輸介面晶片以及其測試方法
CN106803979B (zh) * 2017-02-20 2019-10-11 深圳创维数字技术有限公司 一种支持多个节目同时解扰的方法及系统
CN109213625B (zh) * 2017-06-30 2022-02-11 慧荣科技股份有限公司 降低快闪储存介面中传收数据错误方法及装置
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Also Published As

Publication number Publication date
ES2337920T3 (es) 2010-04-30
US8090104B2 (en) 2012-01-03
TW200840361A (en) 2008-10-01
CN101005356A (zh) 2007-07-25
EP1804508A1 (en) 2007-07-04
MY144832A (en) 2011-11-15
EP1804508B1 (en) 2009-12-09
KR20070073622A (ko) 2007-07-10
ATE451791T1 (de) 2009-12-15
US20070177733A1 (en) 2007-08-02
CN101005356B (zh) 2012-05-30
JP2007184929A (ja) 2007-07-19
RU2006147370A (ru) 2008-07-10
CA2572345C (en) 2014-12-23
CA2572345A1 (en) 2007-07-03
ZA200700061B (en) 2009-05-27
BRPI0700001A (pt) 2007-10-16
AU2007200006B2 (en) 2010-11-18
JP5106845B2 (ja) 2012-12-26
AU2007200006A1 (en) 2007-07-19
RU2433548C2 (ru) 2011-11-10
DE602006010968D1 (de) 2010-01-21

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