BR9907094A - Method and apparatus for transporting a private message to selected members - Google Patents

Method and apparatus for transporting a private message to selected members

Info

Publication number
BR9907094A
BR9907094A BR9907094-4A BR9907094A BR9907094A BR 9907094 A BR9907094 A BR 9907094A BR 9907094 A BR9907094 A BR 9907094A BR 9907094 A BR9907094 A BR 9907094A
Authority
BR
Brazil
Prior art keywords
message
private
encrypted
parts
management
Prior art date
Application number
BR9907094-4A
Other languages
Portuguese (pt)
Inventor
Terence Edward Sumner
Original Assignee
Terence Edward Sumner
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 Terence Edward Sumner filed Critical Terence Edward Sumner
Publication of BR9907094A publication Critical patent/BR9907094A/en

Links

Classifications

    • 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
    • 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
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/0827—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving distinctive intermediate devices or communication paths
    • 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
    • H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
    • H04L9/083—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP]
    • H04L9/0833—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s) involving central third party, e.g. key distribution center [KDC] or trusted third party [TTP] involving conference or group key
    • 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
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
    • H04N21/462—Content or additional data management, e.g. creating a master electronic program guide from data received from the Internet and a Head-end, controlling the complexity of a video stream by scaling the resolution or bit-rate based on the client capabilities
    • H04N21/4623—Processing of entitlement messages, e.g. ECM [Entitlement Control Message] or EMM [Entitlement Management Message]
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/60—Digital content management, e.g. content distribution
    • H04L2209/601—Broadcast encryption

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Structure Of Telephone Exchanges (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Patente de Invenção para <B>"MéTODO E APARELHO PARA TRANSPORTE DE UMA MENSAGEM PRIVADA PARA MEMBROS SELECIONADOS"<D>. Um sistema de mensagem de distribuição cifrada (102, 103) determina as cripto-chaves de gerenciamento mantidas para cada dispositivo subscritor selecionado (10) e não mantidas por cada dispositivo subscritor excluído de um grupo. A mensagem privada é decomposta em partes de mensagem, uma parte de mensagem por um dispositivo subscritor excluído, cada parte de mensagem pretendida para ser cifrada usando-se cada cripto-chave de gerenciamento mantida pelos dispositivos subscritores selecionados (101) e não mantida pelo dispositivo subscritor excluído. Cada parte de mensagem é cifrada usando-se as cripto-chaves de gerenciamento, e distribuída para pelo menos os dispositivos subscritores selecionados, indentificando-se as partes de mensagem distribuídas e as partes de mensagem necessárias para recompor a mensagem privada. Cada partes de mensagem cifradas recebidas necessárias para recompor a mensagem privada. Cada parte de mensagem cifrada recebida é decifrada usando-se a cripto-chave de gerenciamento pretendida, e as partes de mensagem necessárias são escolhidas das quais a mensagem privada é recomposta pela combinação no dispositivo subscritor selecionado (10).Invention Patent for <B> "METHOD AND APPARATUS FOR TRANSPORTING A PRIVATE MESSAGE TO SELECTED MEMBERS" <D>. An encrypted distribution message system (102, 103) determines the management crypto-keys maintained for each selected subscriber device (10) and not maintained by each subscriber device excluded from a group. The private message is broken down into message parts, a message part by an excluded subscriber device, each message part intended to be encrypted using each management cryptography key held by the selected subscriber devices (101) and not maintained by the device deleted subscriber. Each message part is encrypted using the management crypto-keys, and distributed to at least the selected subscriber devices, identifying the distributed message parts and the message parts necessary to restore the private message. Each received encrypted message parts needed to reset the private message. Each part of the received encrypted message is decrypted using the desired management encryption key, and the necessary message parts are chosen from which the private message is recomposed by the combination on the selected subscriber device (10).

BR9907094-4A 1998-01-19 1999-01-15 Method and apparatus for transporting a private message to selected members BR9907094A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US7177698P 1998-01-19 1998-01-19
PCT/US1999/000896 WO1999037052A1 (en) 1998-01-19 1999-01-15 Method and apparatus for conveying a private message to selected members

Publications (1)

Publication Number Publication Date
BR9907094A true BR9907094A (en) 2000-10-24

Family

ID=22103516

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9907094-4A BR9907094A (en) 1998-01-19 1999-01-15 Method and apparatus for transporting a private message to selected members

Country Status (8)

Country Link
EP (1) EP1050132A4 (en)
JP (1) JP2002510164A (en)
CN (1) CN1292185A (en)
AU (1) AU750042B2 (en)
BR (1) BR9907094A (en)
CA (1) CA2318452A1 (en)
NO (1) NO20003651L (en)
WO (1) WO1999037052A1 (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2001290188A1 (en) * 2000-09-29 2002-04-08 Nagravision S.A. Method for encrypting a formatted data set
GB2380369B (en) * 2001-09-27 2004-03-24 Marconi Comm Ltd A communications network encryption system
WO2006096035A1 (en) * 2005-03-10 2006-09-14 Electronics And Telecommunications Research Institute Encryption and decryption device in wireless portable internet system, and method thereof
JP4823717B2 (en) 2006-02-28 2011-11-24 株式会社日立製作所 Encryption communication system, terminal state management server, encryption communication method, and terminal state management method
KR101308023B1 (en) 2011-10-27 2013-09-26 국방과학연구소 Broadcast encryption method for securing recipient privacy
JP5875441B2 (en) 2012-03-29 2016-03-02 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ Apparatus and method for encrypting data
CN112152909B (en) 2015-02-16 2022-11-01 钉钉控股（开曼）有限公司 User message reminding method
CN106034068A (en) 2015-03-20 2016-10-19 阿里巴巴集团控股有限公司 Method and device for private chat in group chat, client-side, server and system
CN105610695B (en) 2015-12-21 2021-01-12 阿里巴巴集团控股有限公司 Object allocation method and device
CN105681056B (en) 2016-01-13 2019-03-19 阿里巴巴集团控股有限公司 Object distribution method and device
CN105812237B (en) 2016-03-07 2020-12-04 钉钉控股（开曼）有限公司 Method and device for quickly adding reminding object
CN107306286B (en) 2016-04-21 2020-12-04 钉钉控股（开曼）有限公司 Processing method and device for offline attendance
CN107305459A (en) 2016-04-25 2017-10-31 阿里巴巴集团控股有限公司 The sending method and device of voice and Multimedia Message
CN107368995A (en) 2016-05-13 2017-11-21 阿里巴巴集团控股有限公司 Task processing method and device
CN107800609B (en) * 2016-09-05 2021-06-01 阿里巴巴集团控股有限公司 Communication method and device
CN107846345A (en) 2016-09-18 2018-03-27 阿里巴巴集团控股有限公司 The means of communication and device
GB2560587A (en) * 2017-03-17 2018-09-19 Univ Oxford Innovation Ltd Secure data exchange
CN117240620B (en) * 2023-11-13 2024-02-06 杭州金智塔科技有限公司 Privacy set union system and method
CN117473539B (en) * 2023-12-28 2024-04-26 深圳市乐凡信息科技有限公司 Data encryption method, data decryption method, terminal device, and readable storage medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4803725A (en) * 1985-03-11 1989-02-07 General Instrument Corp. Cryptographic system using interchangeable key blocks and selectable key fragments
US5016277A (en) * 1988-12-09 1991-05-14 The Exchange System Limited Partnership Encryption key entry method in a microcomputer-based encryption system
US4926478A (en) * 1988-12-30 1990-05-15 Gruenberg Elliot Method and apparatus for continuously acknowledged link encrypting
US5117458A (en) * 1989-11-01 1992-05-26 Hitachi, Ltd. Secret information service system and method
GB9003326D0 (en) * 1990-02-14 1990-04-11 Enfranchise Sixty Ltd Apparatus and method for data communication
US5144664A (en) * 1990-11-16 1992-09-01 General Instrument Corporation Apparatus and method for upgrading terminals to maintain a secure communication network
GB9213169D0 (en) * 1992-06-22 1992-08-05 Ncr Int Inc Cryptographic key management apparatus and method
IL106796A (en) * 1993-08-25 1997-11-20 Algorithmic Res Ltd Broadcast encryption

Also Published As

Publication number Publication date
AU750042B2 (en) 2002-07-11
JP2002510164A (en) 2002-04-02
EP1050132A1 (en) 2000-11-08
NO20003651D0 (en) 2000-07-17
EP1050132A4 (en) 2005-05-18
CN1292185A (en) 2001-04-18
CA2318452A1 (en) 1999-07-22
AU2758699A (en) 1999-08-02
WO1999037052A1 (en) 1999-07-22
NO20003651L (en) 2000-09-18

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Legal Events

Date Code Title Description
B04C Request for examination: reinstatement - article 33, solely paragraph, of industrial property law
B08F Application fees: dismissal - article 86 of industrial property law

Free format text: REFERENTE A 9A E 10A ANUIDADES.

B08K Lapse as no evidence of payment of the annual fee has been furnished to inpi (acc. art. 87)

Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1990 DE 25/02/2009.