[go: up one dir, main page]

BR0115573A - Limit encryption scheme for message authentication systems - Google Patents

Limit encryption scheme for message authentication systems

Info

Publication number
BR0115573A
BR0115573A BR0115573-3A BR0115573A BR0115573A BR 0115573 A BR0115573 A BR 0115573A BR 0115573 A BR0115573 A BR 0115573A BR 0115573 A BR0115573 A BR 0115573A
Authority
BR
Brazil
Prior art keywords
encryption scheme
message authentication
authentication systems
limit encryption
message
Prior art date
Application number
BR0115573-3A
Other languages
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 BR0115573A publication Critical patent/BR0115573A/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)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)

Abstract

"ESQUEMA DE CRIPTOGRAFIA LIMITE PARA SISTEMAS DE AUTENTICAçãO DE MENSAGENS". Trata-se de um método e um aparelho para autenticar uma mensagem, o método incluindo receber, em um dispositivo, dados representativos de uma primeira quota, construir uma chave usando a primeira quota e pelo menos duas quotas adicionais, as pelo menos duas quotas adicionais sendo armazenadas no dispositivo; e autenticar uma mensagem usando a chave construída."LIMIT ENCRYPTION SCHEME FOR MESSAGE AUTHENTICATION SYSTEMS". It is a method and apparatus for authenticating a message, the method including receiving, on a device, data representative of a first quota, constructing a key using the first quota and at least two additional quotas, the at least two additional quotas. being stored on the device; and authenticate a message using the constructed key.

BR0115573-3A 2000-11-29 2001-09-24 Limit encryption scheme for message authentication systems BR0115573A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25378100P 2000-11-29 2000-11-29
PCT/US2001/029842 WO2002045340A2 (en) 2000-11-29 2001-09-24 Threshold cryptography scheme for message authentication systems

Publications (1)

Publication Number Publication Date
BR0115573A true BR0115573A (en) 2003-07-29

Family

ID=22961673

Family Applications (2)

Application Number Title Priority Date Filing Date
BR0115573-3A BR0115573A (en) 2000-11-29 2001-09-24 Limit encryption scheme for message authentication systems
BR0115575-0A BR0115575A (en) 2000-11-29 2001-09-24 Encryption input scheme for conditional access systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
BR0115575-0A BR0115575A (en) 2000-11-29 2001-09-24 Encryption input scheme for conditional access systems

Country Status (8)

Country Link
EP (2) EP1366594A2 (en)
JP (2) JP2004515160A (en)
KR (2) KR20030094217A (en)
CN (2) CN1484901A (en)
AU (2) AU2001296294A1 (en)
BR (2) BR0115573A (en)
MX (2) MXPA03004822A (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
JP5255436B2 (en) * 2005-06-08 2013-08-07 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Deterministic key pre-distribution and operational key management for human 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
KR20030094217A (en) 2003-12-11
JP2004515160A (en) 2004-05-20
AU2001296294A1 (en) 2002-06-11
CN1484901A (en) 2004-03-24
CN1483259A (en) 2004-03-17
EP1366594A2 (en) 2003-12-03
WO2002045340A2 (en) 2002-06-06
AU2002212977A1 (en) 2002-06-11
JP2004515159A (en) 2004-05-20
WO2002045340A3 (en) 2002-10-17
BR0115575A (en) 2003-07-29
KR20040010565A (en) 2004-01-31
EP1348276A2 (en) 2003-10-01
MXPA03004822A (en) 2003-09-25
WO2002045337A3 (en) 2002-09-06
WO2002045337A2 (en) 2002-06-06
MXPA03004599A (en) 2003-09-04

Similar Documents

Publication Publication Date Title
NO20015908D0 (en) Information processing system and method
FI981132A0 (en) Prevent unauthorized use of the service
BR0102260A (en) Improved method for authenticating a user signature identity module
BR0203323A (en) Improvement introduced in communication terminal system
WO1999016031A3 (en) Method and apparatus for asymmetric key management in a cryptographic system
DE602004012996D1 (en) METHOD AND DEVICE FOR AUTHENTICATING USERS AND WEBSITES
WO2005065132A3 (en) System, method, and devices for authentication in a wireless local area network (wlan)
NO20014774D0 (en) System, portable device and method for digital authentication, encryption and signing when generating volatile crypton keys
ES2241123T3 (en) PROCEDURE AND DEVICE FOR A ROBUST AND VERY FAST CRYPTOGRAPHIC SYSTEM.
EP1049287A3 (en) Encryption/decryption method and authentication method using multi-affine key system and apparatuses using the same
AU3144101A (en) Consumable authentication protocol and system
EP0856820A3 (en) IC card, IC card processing system, and IC card authentication method
BR9902942A (en) Method for updating the secret shared data in a wireless communication system.
AU2002212345A1 (en) Method and system for web-based cross-domain single-sign-on authentication
WO2001088674A3 (en) Method and apparatus for managing secure collaborative transactions
GB9929748D0 (en) Cryptographic key management
WO2003003171A3 (en) A method and system for generating and verifying a key protection certificate.
NO943457D0 (en) "Smart card" adapted to multiple service providers and secondary utilization
DK1364508T3 (en) Data certification method and apparatus
BR0115573A (en) Limit encryption scheme for message authentication systems
FR2871007B1 (en) SECURE UNLOCKING OF A MOBILE TERMINAL
BRPI0406777B1 (en) content protection system, key data generation device and terminal device
ATE506797T1 (en) DATA AUTHENTICATION METHOD AND AGENT BASED SYSTEM
MY141019A (en) Challenge-based authentication without requiring knowledge of secret authentication
ATE377881T1 (en) NETWORK DEVICE, SYSTEM AND METHOD FOR AUTHENTICATION

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.