MXPA03004822A - Threshold cryptography scheme for conditional access systems. - Google Patents

Threshold cryptography scheme for conditional access systems.

Info

Publication number
MXPA03004822A
MXPA03004822A MXPA03004822A MXPA03004822A MXPA03004822A MX PA03004822 A MXPA03004822 A MX PA03004822A MX PA03004822 A MXPA03004822 A MX PA03004822A MX PA03004822 A MXPA03004822 A MX PA03004822A MX PA03004822 A MXPA03004822 A MX PA03004822A
Authority
MX
Mexico
Prior art keywords
conditional access
access systems
cryptography scheme
threshold cryptography
threshold
Prior art date
Application number
MXPA03004822A
Other languages
Spanish (es)
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 MXPA03004822A publication Critical patent/MXPA03004822A/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

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)
MXPA03004822A 2000-11-29 2001-09-24 Threshold cryptography scheme for conditional access systems. MXPA03004822A (en)

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
MXPA03004822A true MXPA03004822A (en) 2003-09-25

Family

ID=22961673

Family Applications (2)

Application Number Title Priority Date Filing Date
MXPA03004599A MXPA03004599A (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for message authentication systems.
MXPA03004822A MXPA03004822A (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
MXPA03004599A MXPA03004599A (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for message authentication systems.

Country Status (8)

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

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 (en) * 2005-06-08 2008-03-05 Koninklijke Philips Electronics N.V. Deterministic key pre-distribution for mobile body sensor networks
JP4776378B2 (en) * 2006-01-11 2011-09-21 日本電信電話株式会社 MULTI-KEY AUTHENTICATION TERMINAL DEVICE, MULTI-KEY AUTHENTICATION MANAGEMENT DEVICE, MULTI-KEY AUTHENTICATION SYSTEM, AND PROGRAM
JP4916915B2 (en) * 2007-02-28 2012-04-18 Ｋｄｄｉ株式会社 Terminal device, data management device, and computer program
JP4909796B2 (en) * 2007-04-24 2012-04-04 Ｋｄｄｉ株式会社 Secret information management system, secret information management method and program
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 (en) * 2008-03-26 2008-07-17 Dainippon Printing Co Ltd Public key encryption processing system and method
JP5608509B2 (en) * 2010-10-21 2014-10-15 Ｋｄｄｉ株式会社 Key management system, key management method, and computer program
US11170094B2 (en) 2016-01-27 2021-11-09 Secret Double Octopus Ltd. System and method for securing a communication channel
WO2017130200A1 (en) * 2016-01-27 2017-08-03 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
BR0115575A (en) 2003-07-29
AU2002212977A1 (en) 2002-06-11
MXPA03004599A (en) 2003-09-04
KR20040010565A (en) 2004-01-31
WO2002045340A2 (en) 2002-06-06
BR0115573A (en) 2003-07-29
CN1484901A (en) 2004-03-24
JP2004515159A (en) 2004-05-20
AU2001296294A1 (en) 2002-06-11
WO2002045340A3 (en) 2002-10-17
JP2004515160A (en) 2004-05-20
KR20030094217A (en) 2003-12-11
WO2002045337A2 (en) 2002-06-06
EP1366594A2 (en) 2003-12-03
EP1348276A2 (en) 2003-10-01
WO2002045337A3 (en) 2002-09-06
CN1483259A (en) 2004-03-17

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Legal Events

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