WO2002045337A3 - Schema cryptographique a seuil destine a des systemes a acces conditionnel - Google Patents

Schema cryptographique a seuil destine a des systemes a acces conditionnel Download PDF

Info

Publication number
WO2002045337A3
WO2002045337A3 PCT/US2001/029790 US0129790W WO0245337A3 WO 2002045337 A3 WO2002045337 A3 WO 2002045337A3 US 0129790 W US0129790 W US 0129790W WO 0245337 A3 WO0245337 A3 WO 0245337A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
share
scrambling key
conditional access
access systems
Prior art date
Application number
PCT/US2001/029790
Other languages
English (en)
Other versions
WO2002045337A2 (fr
Inventor
Ahmet Mursit Eskicioglu
Original Assignee
Thomson Licensing Sa
Ahmet Mursit Eskicioglu
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 Thomson Licensing Sa, Ahmet Mursit Eskicioglu filed Critical Thomson Licensing Sa
Priority to AU2001296294A priority Critical patent/AU2001296294A1/en
Priority to MXPA03004822A priority patent/MXPA03004822A/es
Priority to US10/432,916 priority patent/US20040047472A1/en
Priority to KR10-2003-7006964A priority patent/KR20040010565A/ko
Priority to EP01977153A priority patent/EP1348276A2/fr
Priority to BR0115575-0A priority patent/BR0115575A/pt
Priority to JP2002546354A priority patent/JP2004515159A/ja
Publication of WO2002045337A2 publication Critical patent/WO2002045337A2/fr
Publication of WO2002045337A3 publication Critical patent/WO2002045337A3/fr

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]
    • H04N21/20—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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • 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
    • H04L9/085—Secret sharing or secret splitting, e.g. threshold schemes
    • 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
    • H04N21/258—Client or end-user data management, e.g. managing client capabilities, user preferences or demographics, processing of multiple end-users preferences to derive collaborative data
    • H04N21/25808—Management of client data
    • H04N21/25816—Management of client data involving client authentication
    • 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)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Graphics (AREA)
  • Storage Device Security (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

L'invention concerne un procédé et un appareil destinés à gérer l'accès à un signal représentatif d'un événement d'un fournisseur de service, consistant à recevoir le signal dans une carte à puce, ce signal étant crypté au moyen d'une clé de cryptage, à recevoir, dans cette carte à puce, des données représentatives d'une première part, à construire la clé de cryptage au moyen de cette première part et au moins une part supplémentaire, cette dernière étant stockée dans la carte à puce, et à décrypter le signal au moyen de la clé de cryptage afin de fournir un signal décrypté. Le procédé de construction de la clé de cryptage consistant à calculer l'abscisse à l'origine de la ligne formée sur le plan euclidien par la première part, et la/les part(s) supplémentaire(s).
PCT/US2001/029790 2000-11-29 2001-09-24 Schema cryptographique a seuil destine a des systemes a acces conditionnel WO2002045337A2 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AU2001296294A AU2001296294A1 (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for conditional access systems
MXPA03004822A MXPA03004822A (es) 2000-11-29 2001-09-24 Esquema de criptografia de umbral para sistemas de acceso condicionado.
US10/432,916 US20040047472A1 (en) 2001-09-24 2001-09-24 Threshold cryptography scheme for conditional access systems
KR10-2003-7006964A KR20040010565A (ko) 2000-11-29 2001-09-24 조건부 액세스 시스템을 위한 임계값 암호화 구조
EP01977153A EP1348276A2 (fr) 2000-11-29 2001-09-24 Schema cryptographique a seuil destine a des systemes a acces conditionnel
BR0115575-0A BR0115575A (pt) 2000-11-29 2001-09-24 Esquema de entrada de criptografia para sistemas de acesso condicional
JP2002546354A JP2004515159A (ja) 2000-11-29 2001-09-24 条件付きアクセス・システムのためのしきい値暗号方法およびシステム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25378100P 2000-11-29 2000-11-29
US60/253,781 2000-11-29

Publications (2)

Publication Number Publication Date
WO2002045337A2 WO2002045337A2 (fr) 2002-06-06
WO2002045337A3 true WO2002045337A3 (fr) 2002-09-06

Family

ID=22961673

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2001/029842 WO2002045340A2 (fr) 2000-11-29 2001-09-24 Schema cryptographique a seuil destine a des systemes d'authentification de message
PCT/US2001/029790 WO2002045337A2 (fr) 2000-11-29 2001-09-24 Schema cryptographique a seuil destine a des systemes a acces conditionnel

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2001/029842 WO2002045340A2 (fr) 2000-11-29 2001-09-24 Schema cryptographique a seuil destine a des systemes d'authentification de message

Country Status (8)

Country Link
EP (2) EP1348276A2 (fr)
JP (2) JP2004515160A (fr)
KR (2) KR20040010565A (fr)
CN (2) CN1483259A (fr)
AU (2) AU2001296294A1 (fr)
BR (2) BR0115573A (fr)
MX (2) MXPA03004599A (fr)
WO (2) WO2002045340A2 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594275B2 (en) * 2003-10-14 2009-09-22 Microsoft Corporation Digital rights management system
US7620187B1 (en) 2005-03-30 2009-11-17 Rockwell Collins, Inc. Method and apparatus for ad hoc cryptographic key transfer
EP1894340A2 (fr) * 2005-06-08 2008-03-05 Koninklijke Philips Electronics N.V. Pre-distribution de cle deterministique et gestion de cle fonctionnelle pour reseaux de detecteurs de corps mobiles
JP4776378B2 (ja) * 2006-01-11 2011-09-21 日本電信電話株式会社 複数鍵認証端末装置及び複数鍵認証管理装置及び複数鍵認証システム及びプログラム
JP4916915B2 (ja) * 2007-02-28 2012-04-18 Ｋｄｄｉ株式会社 端末装置、データ管理装置およびコンピュータプログラム
JP4909796B2 (ja) * 2007-04-24 2012-04-04 Ｋｄｄｉ株式会社 秘密情報管理システム、秘密情報管理方法およびプログラム
GB2451505A (en) 2007-08-01 2009-02-04 Iti Scotland Ltd Key distribution in a network using key shares in a secret sharing scheme
US7958354B1 (en) 2008-02-14 2011-06-07 Rockwell Collins, Inc. High-order knowledge sharing system to distribute secret data
JP2008167505A (ja) * 2008-03-26 2008-07-17 Dainippon Printing Co Ltd 公開鍵暗号処理システムおよび方法
JP5608509B2 (ja) * 2010-10-21 2014-10-15 Ｋｄｄｉ株式会社 鍵管理システム、鍵管理方法及びコンピュータプログラム
US11170094B2 (en) 2016-01-27 2021-11-09 Secret Double Octopus Ltd. System and method for securing a communication channel
WO2017130200A1 (fr) * 2016-01-27 2017-08-03 Secret Double Octopus Ltd Système et procédé de sécurisation d'un canal de communication

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049756A2 (fr) * 1999-02-17 2000-08-24 Certco, Inc. Controle cryptographique et maintien de la structure et des fonctions d'une organisation

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049756A2 (fr) * 1999-02-17 2000-08-24 Certco, Inc. Controle cryptographique et maintien de la structure et des fonctions d'une organisation

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ADI SHAMIR: "How to Share a Secret", COMMUNICATIONS OF THE ACM, 1979, Massachusetts Institute of Technology, XP002201104, Retrieved from the Internet <URL:http://szabo.best.vwh.net/secret.html> [retrieved on 20020604] *
BLUNDO, CRESTI, DE SANTIS, VACCARO: "Fully Dynamic Secret Sharing Schemes", DIPARTAMENTO DI INFORMATICA ED APPLICAZIONI, 1994, Universita di Salerno (Italy), pages 110 - 125, XP002201105, Retrieved from the Internet <URL:http://citeseer.nj.nec.com/cache/papers/cs/788/http:zSzzSzwww.unisa.itzSzpaperszSzfully.pdf/blundo94fully.pdf> [retrieved on 20020604] *
MENEZES, OORSCHOT: "Handbook of Applied Cryptography", 1997, CRC PRESS LLC, USA, XP002201106 *
SIMMONS J.G.: "Prepositioned Shared Secret and/or Shared Control Schemes", EUROCRYPT '89 PROCEEDINGS, SPRINGER-VERLAG, 1990, Alburquerque, New Mexico (USA), pages 437 - 467, XP002201103, Retrieved from the Internet <URL:http://dsns.csie.nctu.edu.tw/research/crypto/HTML/PDF/E89/436.PDF> [retrieved on 20020604] *

Also Published As

Publication number Publication date
BR0115575A (pt) 2003-07-29
AU2002212977A1 (en) 2002-06-11
MXPA03004599A (es) 2003-09-04
MXPA03004822A (es) 2003-09-25
KR20040010565A (ko) 2004-01-31
WO2002045340A2 (fr) 2002-06-06
BR0115573A (pt) 2003-07-29
CN1484901A (zh) 2004-03-24
JP2004515159A (ja) 2004-05-20
AU2001296294A1 (en) 2002-06-11
WO2002045340A3 (fr) 2002-10-17
JP2004515160A (ja) 2004-05-20
KR20030094217A (ko) 2003-12-11
WO2002045337A2 (fr) 2002-06-06
EP1366594A2 (fr) 2003-12-03
EP1348276A2 (fr) 2003-10-01
CN1483259A (zh) 2004-03-17

Similar Documents

Publication Publication Date Title
US4802215A (en) Security system for television signal encryption
EP0891670B2 (fr) Procede servant a etablir une communication sure entre deux dispositifs et mise en application du procede
EP1486069B1 (fr) Appareil, procede et logiciel de restitution de contenu, et appareil et systeme de gestion a cle
US7590242B2 (en) Selective multimedia data encryption
WO2001076128A3 (fr) Methode et systeme de fourniture et de reproduction de donnees
HUP0200126A2 (hu) Eljárás feltételes hozzáférési rendszer üzemeltetésére adatszóró alkalmazásokhoz
WO2002045337A3 (fr) Schema cryptographique a seuil destine a des systemes a acces conditionnel
EP1258100A4 (fr) Systeme et procede pour communications cryptographiques protegees
EP1775948A3 (fr) Système et procédé d&#39;accès conditionnel à une diffusion numérique
FR2823936B1 (fr) Procede et systeme d&#39;acces conditionnel a des services ip
US20020108040A1 (en) Threshold cryptography scheme for conditional access systems
EP1671485B1 (fr) Appariement de module de securite portable
US9210137B2 (en) Local digital network, methods for installing new devices and data broadcast and reception methods in such a network
EP1040661B1 (fr) Systeme d&#39;acces conditionnel pour recepteurs numeriques
JP3068634B2 (ja) データ放送受信システム
US20040047472A1 (en) Threshold cryptography scheme for conditional access systems
JP2825053B2 (ja) 有料放送送受信システム及び有料放送受信用デコーダ
AU2002364315A1 (en) Method for distributing scrambled digital data decryption keys
CN100394794C (zh) 一种有线电视自动计费的方法
EP1502382B1 (fr) Procede de controle d acces a un reseau
CN101998163A (zh) 授权管理方法、终端设备和前端
US10123091B2 (en) Playback management device, playback management method, playback management program, content receiving system, and content distribution system
MXPA00005716A (en) Conditional access system for digital receivers

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PH PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
WWE Wipo information: entry into national phase

Ref document number: 542/KOLNP/2003

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 1020037006964

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2002546354

Country of ref document: JP

WWE Wipo information: entry into national phase

Ref document number: 018196888

Country of ref document: CN

Ref document number: 10432916

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: PA/a/2003/004822

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: 2001977153

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2001977153

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1020037006964

Country of ref document: KR