BRPI0700001A - método para desembaralhar um objeto de dado com conteúdo embaralhado - Google Patents

método para desembaralhar um objeto de dado com conteúdo embaralhado

Info

Publication number
BRPI0700001A
BRPI0700001A BRPI0700001-4A BRPI0700001A BRPI0700001A BR PI0700001 A BRPI0700001 A BR PI0700001A BR PI0700001 A BRPI0700001 A BR PI0700001A BR PI0700001 A BRPI0700001 A BR PI0700001A
Authority
BR
Brazil
Prior art keywords
key
data object
scrambled content
descrambling
message
Prior art date
Application number
BRPI0700001-4A
Other languages
English (en)
Inventor
Andrew Augustine 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 BRPI0700001A publication Critical patent/BRPI0700001A/pt

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

MéTODO PARA DESEMBARALHAR UM OBJETO DE DADO COM CONTEúDO EMBARALHADO. A presente invenção refere-se a um método para desembaralhar um objeto de dado com conteúdo embaralhado (50a até 50j), pelo menos uma seção do objeto de dado com conteúdo embaralhado (50a até 50j) é desembaralhada por se aplicar pelo menos uma operação de decriptografia sob uma chave (40, 46) pelo menos parcialmente derivável a partir de uma chave de desembaralhar conteúdo. Pelo menos uma chave de desembaralhar conteúdo (37) é obtida a partir de uma mensagem (33) recebida a partir de um subsistema de acesso condicional (3) através de um canal de comunicação de dados. Pelo menos um criptograma de dados que podem ser obtidos a partir da pelo menos uma chave de desembaralhar conteúdo (37) na mensagem (33), cada um dos criptogramas transportados na mensagem (33), é decriptografado sob uma chave de canal associada (24, 27). Uma primeira chave (24) é utilizada para estabelecer cada chave de canal (24, 27). Pelo menos a seção do objeto de dado com conteúdo embaralhado (50a até 50j) é desembaralhada por se aplicar uma operação de decriptografia adicional sob uma chave (43) pelo menos parcialmente derivável a partir da primeira chave (24).
BRPI0700001-4A 2006-01-03 2007-01-03 método para desembaralhar um objeto de dado com conteúdo embaralhado BRPI0700001A (pt)

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
BRPI0700001A true BRPI0700001A (pt) 2007-10-16

Family

ID=36501900

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0700001-4A BRPI0700001A (pt) 2006-01-03 2007-01-03 método para desembaralhar um objeto de dado com conteúdo embaralhado

Country Status (16)

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

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070294170A1 (en) * 2006-06-02 2007-12-20 Luc Vantalon Systems and methods for conditional access and digital rights management
RU2339077C1 (ru) * 2007-03-13 2008-11-20 Олег Вениаминович Сахаров Способ функционирования системы условного доступа для применения в компьютерных сетях и система для его осуществления
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
US9215423B2 (en) 2009-03-30 2015-12-15 Time Warner Cable Enterprises Llc Recommendation engine apparatus and methods
US11076189B2 (en) 2009-03-30 2021-07-27 Time Warner Cable Enterprises Llc Personal media channel apparatus and methods
JP5446453B2 (ja) * 2009-04-30 2014-03-19 ソニー株式会社 情報処理装置、電子署名生成システム、電子署名用の鍵生成方法、情報処理方法、及びプログラム
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
EP2487828A1 (en) * 2011-02-10 2012-08-15 Thomson Licensing Method and device for generating control words
US9251097B1 (en) * 2011-03-22 2016-02-02 Amazon Technologies, Inc. Redundant key management
IL213611A0 (en) 2011-06-16 2011-07-31 Erez Waisbard Secure fast channel changing
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
US12058260B2 (en) * 2019-02-24 2024-08-06 Nili Philipp System and method for securing data
WO2021051002A1 (en) * 2019-09-12 2021-03-18 Intertrust Technologies Corporation Dynamic broadcast content access management systems and methods

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6246767B1 (en) * 1995-04-03 2001-06-12 Scientific-Atlanta, Inc. Source authentication of download information in a conditional access system
HRP970160A2 (en) 1996-04-03 1998-02-28 Digco B V Method for providing a secure communication between two devices and application of this method
JP2003521820A (ja) * 1997-08-01 2003-07-15 サイエンティフィック−アトランタ， インコーポレイテッド 条件付きアクセスシステム
EP0926894A1 (en) * 1997-12-23 1999-06-30 CANAL+ Société Anonyme Scrambling unit for a digital transmission system
EP0936774A1 (en) * 1998-02-13 1999-08-18 CANAL+ Société Anonyme Recording of scrambled digital data
US6697489B1 (en) * 1999-03-30 2004-02-24 Sony Corporation Method and apparatus for securing control words
DE60040724D1 (de) * 2000-04-07 2008-12-18 Irdeto Access Bv Datenverschlüsselungs und -entschlüsselungssystem
JP3742282B2 (ja) * 2000-06-30 2006-02-01 株式会社東芝 放送受信方法および放送受信装置および情報配信方法および情報配信装置
US7409562B2 (en) * 2001-09-21 2008-08-05 The Directv Group, Inc. Method and apparatus for encrypting media programs for later purchase and viewing
WO2003028287A1 (en) * 2001-09-21 2003-04-03 Hughes Electronics Corporation Method and apparatus for controlling paired operation of a conditional access module and an integrated receiver and decoder
JP2003153227A (ja) * 2001-11-13 2003-05-23 Toshiba Corp 放送受信処理システム、放送受信処理方法、及び受信装置に適用されるｉｃカード
JP3965126B2 (ja) 2002-03-20 2007-08-29 松下電器産業株式会社 コンテンツを再生する再生装置
JP2005523657A (ja) * 2002-04-19 2005-08-04 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ コンディショナル・アクセス・システム及び装置
US20040017918A1 (en) * 2002-07-24 2004-01-29 Christophe Nicolas Process for point-to-point secured transmission of data and electronic module for implementing the process
US7616763B2 (en) * 2002-08-19 2009-11-10 Nagravision Sa Validity verification method for a local digital network key
KR100813954B1 (ko) * 2003-01-16 2008-03-14 삼성전자주식회사 암호화 장치 및 암호화 방법
EP1447976B1 (en) * 2003-02-12 2019-06-19 Irdeto B.V. Method of controlling descrambling of a plurality of program transport streams, receiver system and portable secure device
US7487349B2 (en) * 2004-04-23 2009-02-03 Nagracard S.A. Method for securing a ciphered content transmitted by a broadcaster

Also Published As

Publication number Publication date
ZA200700061B (en) 2009-05-27
CN101005356A (zh) 2007-07-25
US8090104B2 (en) 2012-01-03
ES2337920T3 (es) 2010-04-30
AU2007200006A1 (en) 2007-07-19
AU2007200006B2 (en) 2010-11-18
ATE451791T1 (de) 2009-12-15
JP2007184929A (ja) 2007-07-19
MX2007000299A (es) 2008-11-14
JP5106845B2 (ja) 2012-12-26
DE602006010968D1 (de) 2010-01-21
CA2572345C (en) 2014-12-23
RU2433548C2 (ru) 2011-11-10
CN101005356B (zh) 2012-05-30
KR20070073622A (ko) 2007-07-10
EP1804508B1 (en) 2009-12-09
US20070177733A1 (en) 2007-08-02
EP1804508A1 (en) 2007-07-04
TW200840361A (en) 2008-10-01
MY144832A (en) 2011-11-15
RU2006147370A (ru) 2008-07-10
CA2572345A1 (en) 2007-07-03

Similar Documents

Publication Publication Date Title
BRPI0700001A (pt) método para desembaralhar um objeto de dado com conteúdo embaralhado
WO2009037582A3 (en) System and method for securely communicating on- demand content from closed network to dedicated devices, and for compiling content usage data in closed network securely communicating content to dedicated devices
WO2003003587A3 (en) Conditional access system
WO2002080444A3 (en) Method and apparatus for streaming data using rotating cryptographic keys
WO2006088596A3 (en) Key management system for digital cinema
JP2009545229A5 (pt)
WO2009145495A3 (en) Method and apparatus for providing broadcast service using encryption key in a communication system
WO2007069236A3 (en) Method and system for usage of block cipher encryption
WO2008001327A3 (en) Method and apparatus for encrypting/decrypting data
WO2005072225A3 (en) System and method for security processing media streams
WO2005025122A8 (en) Secure multicast transmission
MY162283A (en) Method and apparatus for mutual authentication
NZ600198A (en) Content receiving device, content reproducing device, content receiving and reproducing device, content receiving method, and program
WO2008098833A3 (en) Controlling access to encrypted content using multiple broadcast encryption based control blocks
WO2008042175A3 (en) Key wrapping system and method using encryption
EP1487211A3 (en) Secure verification of an STB
WO2010010336A3 (en) Mulitipad encryption
GB201105156D0 (en) Content encryption
WO2005008951A3 (fr) Procede, systeme et supports d'enregistrement de chiffrement et/ou de dechiffrement traçable
WO2007106586A3 (en) Decryption key reuse in ancrypted digital data stream distribution systems
HK1115967A1 (en) Method for encrypting and decrypting a conditional access content
WO2006091528A8 (en) System and method for three-phase data encryption
WO2011113870A8 (fr) Procede et systeme de diffusion securisee d'un flux de donnees numeriques
TW200637322A (en) Communication system and communication method
TW200712907A (en) Method, device and computer program for data decryption by use of a host-processor and a co-processor

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 7A 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 2260 DE 29/04/2014.