BR0115575A - Esquema de entrada de criptografia para sistemas de acesso condicional - Google Patents

Esquema de entrada de criptografia para sistemas de acesso condicional

Info

Publication number
BR0115575A
BR0115575A BR0115575-0A BR0115575A BR0115575A BR 0115575 A BR0115575 A BR 0115575A BR 0115575 A BR0115575 A BR 0115575A BR 0115575 A BR0115575 A BR 0115575A
Authority
BR
Brazil
Prior art keywords
signal
conditional access
access systems
smart card
key
Prior art date
Application number
BR0115575-0A
Other languages
English (en)
Portuguese (pt)
Inventor
Ahmet Mursit Eskicioglu
Original Assignee
Thomson Licensing Sa
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 filed Critical Thomson Licensing Sa
Publication of BR0115575A publication Critical patent/BR0115575A/pt

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
BR0115575-0A 2000-11-29 2001-09-24 Esquema de entrada de criptografia para sistemas de acesso condicional BR0115575A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25378100P 2000-11-29 2000-11-29
PCT/US2001/029790 WO2002045337A2 (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for conditional access systems

Publications (1)

Publication Number Publication Date
BR0115575A true BR0115575A (pt) 2003-07-29

Family

ID=22961673

Family Applications (2)

Application Number Title Priority Date Filing Date
BR0115575-0A BR0115575A (pt) 2000-11-29 2001-09-24 Esquema de entrada de criptografia para sistemas de acesso condicional
BR0115573-3A BR0115573A (pt) 2000-11-29 2001-09-24 Esquema de criptografia limite para sistemas de autenticação de mensagens

Family Applications After (1)

Application Number Title Priority Date Filing Date
BR0115573-3A BR0115573A (pt) 2000-11-29 2001-09-24 Esquema de criptografia limite para sistemas de autenticação de mensagens

Country Status (8)

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

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

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7610614B1 (en) * 1999-02-17 2009-10-27 Certco, Inc. Cryptographic control and maintenance of organizational structure and functions

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
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
WO2002045337A2 (en) 2002-06-06
KR20040010565A (ko) 2004-01-31
WO2002045340A3 (en) 2002-10-17
AU2002212977A1 (en) 2002-06-11
WO2002045337A3 (en) 2002-09-06

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: CONFORME ARTIGO 10O DA RESOLUCAO 124/06, CABE SER ARQUIVADO REFERENTE AO NAO RECOLHIMENTO DA 9A E 10A ANUIDADES.

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 2144 DE 07/02/2012.