WO2002045337A2 - Threshold cryptography scheme for conditional access systems - Google Patents

Threshold cryptography scheme for conditional access systems Download PDF

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Publication number
WO2002045337A2
WO2002045337A2 PCT/US2001/029790 US0129790W WO0245337A2 WO 2002045337 A2 WO2002045337 A2 WO 2002045337A2 US 0129790 W US0129790 W US 0129790W WO 0245337 A2 WO0245337 A2 WO 0245337A2
Authority
WO
WIPO (PCT)
Prior art keywords
share
shares
signal
smart card
scrambling key
Prior art date
Application number
PCT/US2001/029790
Other languages
English (en)
French (fr)
Other versions
WO2002045337A3 (en
Inventor
Ahmet Mursit Eskicioglu
Original Assignee
Thomson Licensing S.A.
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 S.A. filed Critical Thomson Licensing S.A.
Priority to EP01977153A priority Critical patent/EP1348276A2/en
Priority to MXPA03004822A priority patent/MXPA03004822A/es
Priority to KR10-2003-7006964A priority patent/KR20040010565A/ko
Priority to BR0115575-0A priority patent/BR0115575A/pt
Priority to JP2002546354A priority patent/JP2004515159A/ja
Priority to AU2001296294A priority patent/AU2001296294A1/en
Priority to US10/432,916 priority patent/US20040047472A1/en
Publication of WO2002045337A2 publication Critical patent/WO2002045337A2/en
Publication of WO2002045337A3 publication Critical patent/WO2002045337A3/en

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
PCT/US2001/029790 2000-11-29 2001-09-24 Threshold cryptography scheme for conditional access systems WO2002045337A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP01977153A EP1348276A2 (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.
KR10-2003-7006964A KR20040010565A (ko) 2000-11-29 2001-09-24 조건부 액세스 시스템을 위한 임계값 암호화 구조
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
AU2001296294A AU2001296294A1 (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for conditional access systems
US10/432,916 US20040047472A1 (en) 2001-09-24 2001-09-24 Threshold cryptography scheme for conditional access systems

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 true WO2002045337A2 (en) 2002-06-06
WO2002045337A3 WO2002045337A3 (en) 2002-09-06

Family

ID=22961673

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US2001/029842 WO2002045340A2 (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for message authentication systems
PCT/US2001/029790 WO2002045337A2 (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for conditional access systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/US2001/029842 WO2002045340A2 (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for message authentication systems

Country Status (8)

Country Link
EP (2) EP1348276A2 (es)
JP (2) JP2004515160A (es)
KR (2) KR20030094217A (es)
CN (2) CN1483259A (es)
AU (2) AU2002212977A1 (es)
BR (2) BR0115575A (es)
MX (2) MXPA03004599A (es)
WO (2) WO2002045340A2 (es)

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
RU2420895C2 (ru) * 2005-06-08 2011-06-10 Конинклейке Филипс Электроникс Н.В. Детерминистическое предварительное распределение ключей и функциональное управление ключами для сетей мобильных датчиков на теле
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
WO2017130200A1 (en) * 2016-01-27 2017-08-03 Secret Double Octopus Ltd System and method for securing a communication channel
US11170094B2 (en) 2016-01-27 2021-11-09 Secret Double Octopus Ltd. System and method for securing a communication channel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049756A2 (en) * 1999-02-17 2000-08-24 Certco, Inc. Cryptographic control and maintenance of organizational structure and functions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049756A2 (en) * 1999-02-17 2000-08-24 Certco, Inc. Cryptographic control and maintenance of organizational structure and functions

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ADI SHAMIR: "How to Share a Secret" COMMUNICATIONS OF THE ACM, [Online] 1979, XP002201104 Massachusetts Institute of Technology Retrieved from the Internet: <URL:http://szabo.best.vwh.net/secret.html > [retrieved on 2002-06-04] *
BLUNDO, CRESTI, DE SANTIS, VACCARO: "Fully Dynamic Secret Sharing Schemes" DIPARTAMENTO DI INFORMATICA ED APPLICAZIONI, [Online] 1994, pages 110-125, XP002201105 Universita di Salerno (Italy) Retrieved from the Internet: <URL:http://citeseer.nj.nec.com/cache/papers/cs/788/http:zSzzSzwww.unisa.itzSzpaperszSzfully.pdf/blundo94fully.pdf> [retrieved on 2002-06-04] *
MENEZES, OORSCHOT: "Handbook of Applied Cryptography" 1997 , CRC PRESS LLC , USA XP002201106 * page 364 * * page 524 - page 527 * *
SIMMONS J.G.: "Prepositioned Shared Secret and/or Shared Control Schemes" EUROCRYPT '89 PROCEEDINGS, SPRINGER-VERLAG, [Online] 1990, pages 437-467, XP002201103 Alburquerque, New Mexico (USA) Retrieved from the Internet: <URL:http://dsns.csie.nctu.edu.tw/research/crypto/HTML/PDF/E89/436.PDF> [retrieved on 2002-06-04] *

Also Published As

Publication number Publication date
BR0115573A (pt) 2003-07-29
CN1484901A (zh) 2004-03-24
EP1366594A2 (en) 2003-12-03
MXPA03004599A (es) 2003-09-04
KR20030094217A (ko) 2003-12-11
MXPA03004822A (es) 2003-09-25
WO2002045340A2 (en) 2002-06-06
BR0115575A (pt) 2003-07-29
JP2004515160A (ja) 2004-05-20
JP2004515159A (ja) 2004-05-20
EP1348276A2 (en) 2003-10-01
AU2001296294A1 (en) 2002-06-11
CN1483259A (zh) 2004-03-17
KR20040010565A (ko) 2004-01-31
WO2002045340A3 (en) 2002-10-17
AU2002212977A1 (en) 2002-06-11
WO2002045337A3 (en) 2002-09-06

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