USRE40334E1 - Method and apparatus for encrypted data stream transmission - Google Patents

Method and apparatus for encrypted data stream transmission Download PDF

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Publication number
USRE40334E1
USRE40334E1 US11/332,806 US33280606A USRE40334E US RE40334 E1 USRE40334 E1 US RE40334E1 US 33280606 A US33280606 A US 33280606A US RE40334 E USRE40334 E US RE40334E
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US
United States
Prior art keywords
decoder
key
data stream
encrypted
security module
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.)
Expired - Lifetime
Application number
US11/332,806
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English (en)
Inventor
Michel Maillard
Christian Benardeau
Jean-Luc Dauvois
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.)
Nagra France SAS
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Nagra Thomson Licensing SA
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Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27238734&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=USRE40334(E1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from US09/537,071 external-priority patent/US6286103B1/en
Application filed by Nagra Thomson Licensing SA filed Critical Nagra Thomson Licensing SA
Priority to US11/332,806 priority Critical patent/USRE40334E1/en
Assigned to NAGRA THOMSON LICENSING reassignment NAGRA THOMSON LICENSING CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: CANAL + TECHNOLOGIES
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Publication of USRE40334E1 publication Critical patent/USRE40334E1/en
Assigned to NAGRA FRANCE SAS reassignment NAGRA FRANCE SAS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NAGRA THOMSON LICENSING
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/23—Arrangements for conditional access to broadcast information or to broadcast-related services using cryptography, e.g. encryption, authentication, key distribution
    • 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
    • H04N21/266—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
    • H04N21/418—External card to be used in combination with the client device, e.g. for conditional access
    • H04N21/4183—External card to be used in combination with the client device, e.g. for conditional access providing its own processing capabilities, e.g. external module for video decoding
    • 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
    • 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

Definitions

  • the present invention overcomes the problems with these techniques.
  • Communication of the decoder identity value to the security module will necessarily involve a signal being sent from the decoder to the security module. As we have seen, the transmission of messages across this channel is relatively easy to monitor and it is thus preferable to transfer the identity value in a non-readable form to the security module.
  • Personalised keys of this type are known in relation to EMMs or Entitlement Management Messages, which transmit each month is encrypted form a management key for decrypting that month's ECM to a selected subscriber or group of subscribers possessing the necessary personalised key to decrypt the EMM.
  • the second decoder key is encrypted by a third key before communication to the decoder, the decoder possessing the corresponding third key so as to decrypt and verify the second decoder key.
  • the data stream is re-encrypted by a first encryption key held in the security module before being passed to the decoder.
  • the digital video signal is first compressed (or bit rate reduced), using the MPEG-2 compressor 2002 .
  • This compressed signal is then transmitted to the multiplexer and scrambler 2004 via the linkage 2006 in order to be multiplexed with other data, such as other compressed data.
  • FIG. 5 represents the flow of information in this embodiment between the transmitter 2008 , smart card 3020 and decoder 2020 .
  • this figure shows the information being transmitted directly between transmitter and smart card in order to simplify the explanation, any signals received by the smart card will have of course been received and communicated to the card via the receiver/decoder unit.
  • the transmitter has been represented as a single functional block in this case, the encryption of the transmitted message may be carried out by separate elements of the system, as described in relation to FIGS. 1 and 2 .
  • the data will still be in an encrypted from f(DATA) and will be passed in this form to the decoder 2020 for decryption at the point 3052 .
  • the decoder 2020 also possesses an equivalent of the key Kt and, if universally available information such as time and/or date is used, will also be in possession of the value t.
  • the data may then be decrypted and processed by decoder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Theoretical Computer Science (AREA)
  • Databases & Information Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Communication Control (AREA)
  • Storage Device Security (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Computer And Data Communications (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Buffer Packaging (AREA)
  • Materials For Medical Uses (AREA)
  • Circuits Of Receivers In General (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
US11/332,806 1997-10-02 2006-01-13 Method and apparatus for encrypted data stream transmission Expired - Lifetime USRE40334E1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US11/332,806 USRE40334E1 (en) 1997-10-02 2006-01-13 Method and apparatus for encrypted data stream transmission

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
EP97402322 1997-10-02
EP98401388 1998-06-09
EP98401389 1998-06-09
PCT/IB1998/001610 WO1999018729A1 (en) 1997-10-02 1998-10-02 Method and apparatus for encrypted data stream transmission
US09/537,071 US6286103B1 (en) 1998-10-02 2000-03-28 Method and apparatus for encrypted data stream transmission
US11/332,806 USRE40334E1 (en) 1997-10-02 2006-01-13 Method and apparatus for encrypted data stream transmission

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09/537,071 Reissue US6286103B1 (en) 1997-10-02 2000-03-28 Method and apparatus for encrypted data stream transmission

Publications (1)

Publication Number Publication Date
USRE40334E1 true USRE40334E1 (en) 2008-05-20

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US11/332,806 Expired - Lifetime USRE40334E1 (en) 1997-10-02 2006-01-13 Method and apparatus for encrypted data stream transmission

Country Status (19)

Country Link
US (1) USRE40334E1 (de)
EP (1) EP1020080B1 (de)
JP (1) JP2001519629A (de)
KR (1) KR100672983B1 (de)
CN (1) CN1171454C (de)
AT (1) ATE273597T1 (de)
AU (1) AU748518B2 (de)
BR (1) BRPI9812703B1 (de)
CA (1) CA2305644A1 (de)
DE (1) DE69825611T2 (de)
ES (1) ES2236937T3 (de)
HR (1) HRP20000165A2 (de)
HU (1) HUP0100232A3 (de)
ID (1) ID23916A (de)
IL (1) IL135413A0 (de)
NO (1) NO325610B1 (de)
PL (1) PL339572A1 (de)
TR (1) TR200001560T2 (de)
WO (1) WO1999018729A1 (de)

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US20050286721A1 (en) * 2004-06-29 2005-12-29 Nokia Corporation Providing content in a communication system
US9934408B2 (en) 1999-08-04 2018-04-03 Wistaria Trading Ltd Secure personal content server
US10110379B2 (en) 1999-12-07 2018-10-23 Wistaria Trading Ltd System and methods for permitting open access to data objects and for securing data within the data objects
US10327136B2 (en) * 2008-04-14 2019-06-18 Koninklijke Philips N.V. Method for distributed identification, a station in a network
US10461930B2 (en) 1999-03-24 2019-10-29 Wistaria Trading Ltd Utilizing data reduction in steganographic and cryptographic systems
US10735437B2 (en) 2002-04-17 2020-08-04 Wistaria Trading Ltd Methods, systems and devices for packet watermarking and efficient provisioning of bandwidth
US11184149B2 (en) * 2019-02-19 2021-11-23 International Business Machines Corporation Computing range queries over encrypted data

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CN1150760C (zh) * 1997-12-10 2004-05-19 汤姆森许可公司 用于保护通过nrss接口的音频/视频数据的方法
TW412909B (en) † 1998-05-07 2000-11-21 Kudelski Sa Mechanism of matching between a receiver and a security module
US7068787B1 (en) * 1998-10-23 2006-06-27 Contentguard Holdings, Inc. System and method for protection of digital works
US7415110B1 (en) 1999-03-24 2008-08-19 Intel Corporation Method and apparatus for the generation of cryptographic keys
US7336785B1 (en) * 1999-07-09 2008-02-26 Koninklijke Philips Electronics N.V. System and method for copy protecting transmitted information
US6477252B1 (en) 1999-08-29 2002-11-05 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus
US7068786B1 (en) 1999-08-29 2006-06-27 Intel Corporation Dual use block/stream cipher
US6920221B1 (en) 1999-08-29 2005-07-19 Intel Corporation Method and apparatus for protected exchange of status and secret values between a video source application and a video hardware interface
US6947558B1 (en) 1999-08-29 2005-09-20 Intel Corporation Stream cipher having a shuffle network combiner function
US6731758B1 (en) * 1999-08-29 2004-05-04 Intel Corporation Digital video content transmission ciphering and deciphering method and apparatus
KR100605825B1 (ko) 1999-09-14 2006-07-31 삼성전자주식회사 하드 디스크 드라이브를 구비하는 방송 수신 시스템의 복사 방지장치 및 방법
DE19957466A1 (de) * 1999-11-24 2001-05-31 Deutsche Telekom Ag Verfahren zur Verteilung von Kino-Programmen
WO2001050755A1 (en) * 2000-01-05 2001-07-12 Nds Limited Digital content delivery system and method
US7003107B2 (en) 2000-05-23 2006-02-21 Mainstream Encryption Hybrid stream cipher
JP4691244B2 (ja) * 2000-11-10 2011-06-01 株式会社東芝 限定受信システムの限定受信装置及びセキュリティモジュール、限定受信システム、限定受信装置認証方法及び暗号通信方法
JP2002281476A (ja) * 2001-03-15 2002-09-27 Matsushita Electric Ind Co Ltd デジタル放送限定受信装置
FR2825877B1 (fr) 2001-06-12 2003-09-19 Canal Plus Technologies Procede de controle d'acces a un programme crypte
FR2828781B1 (fr) * 2001-08-14 2003-11-14 At Sky Systeme de securisation du desembrouillage des donnees numeriques sur un poste client ouvert
US7409562B2 (en) * 2001-09-21 2008-08-05 The Directv Group, Inc. Method and apparatus for encrypting media programs for later purchase and viewing
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TW200511860A (en) * 2003-05-14 2005-03-16 Nagracard Sa Duration computing method in a security module
EP1492346A1 (de) * 2003-06-23 2004-12-29 Nagracard S.A. System zur gleichzeitigem Verarbeitung von mindestens 2 Kanälen mit bedingtem Zugriff
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US8996421B2 (en) 2006-05-15 2015-03-31 The Directv Group, Inc. Methods and apparatus to conditionally authorize content delivery at broadcast headends in pay delivery systems
US7992175B2 (en) 2006-05-15 2011-08-02 The Directv Group, Inc. Methods and apparatus to provide content on demand in content broadcast systems
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10461930B2 (en) 1999-03-24 2019-10-29 Wistaria Trading Ltd Utilizing data reduction in steganographic and cryptographic systems
US9934408B2 (en) 1999-08-04 2018-04-03 Wistaria Trading Ltd Secure personal content server
US10110379B2 (en) 1999-12-07 2018-10-23 Wistaria Trading Ltd System and methods for permitting open access to data objects and for securing data within the data objects
US10644884B2 (en) 1999-12-07 2020-05-05 Wistaria Trading Ltd System and methods for permitting open access to data objects and for securing data within the data objects
US10735437B2 (en) 2002-04-17 2020-08-04 Wistaria Trading Ltd Methods, systems and devices for packet watermarking and efficient provisioning of bandwidth
US20050286721A1 (en) * 2004-06-29 2005-12-29 Nokia Corporation Providing content in a communication system
US7765404B2 (en) * 2004-06-29 2010-07-27 Nokia Corporation Providing content in a communication system
US10327136B2 (en) * 2008-04-14 2019-06-18 Koninklijke Philips N.V. Method for distributed identification, a station in a network
US11184149B2 (en) * 2019-02-19 2021-11-23 International Business Machines Corporation Computing range queries over encrypted data

Also Published As

Publication number Publication date
AU9278298A (en) 1999-04-27
ID23916A (id) 2000-05-25
EP1020080A1 (de) 2000-07-19
KR20010030925A (ko) 2001-04-16
CN1280742A (zh) 2001-01-17
JP2001519629A (ja) 2001-10-23
PL339572A1 (en) 2000-12-18
HUP0100232A2 (hu) 2001-05-28
ES2236937T3 (es) 2005-07-16
HRP20000165A2 (en) 2001-04-30
WO1999018729A1 (en) 1999-04-15
AU748518B2 (en) 2002-06-06
NO20001649L (no) 2000-06-02
NO325610B1 (no) 2008-06-23
IL135413A0 (en) 2001-05-20
DE69825611T2 (de) 2005-06-30
CA2305644A1 (en) 1999-04-15
BRPI9812703B1 (pt) 2015-12-15
CN1171454C (zh) 2004-10-13
BR9812703A (pt) 2000-08-22
ATE273597T1 (de) 2004-08-15
HUP0100232A3 (en) 2001-10-29
KR100672983B1 (ko) 2007-01-22
EP1020080B1 (de) 2004-08-11
NO20001649D0 (no) 2000-03-30
TR200001560T2 (tr) 2000-12-21
DE69825611D1 (de) 2004-09-16

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