EP1050132A1 - Verfahren und vorrichtung zur übertragung einer vertraulichen nachricht an ausgewählte teilnehmer - Google Patents
Verfahren und vorrichtung zur übertragung einer vertraulichen nachricht an ausgewählte teilnehmerInfo
- Publication number
- EP1050132A1 EP1050132A1 EP99908068A EP99908068A EP1050132A1 EP 1050132 A1 EP1050132 A1 EP 1050132A1 EP 99908068 A EP99908068 A EP 99908068A EP 99908068 A EP99908068 A EP 99908068A EP 1050132 A1 EP1050132 A1 EP 1050132A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- message
- private
- keys
- security devices
- parts
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
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
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7177698P | 1998-01-19 | 1998-01-19 | |
US71776P | 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 (2)
Publication Number | Publication Date |
---|---|
EP1050132A1 true EP1050132A1 (de) | 2000-11-08 |
EP1050132A4 EP1050132A4 (de) | 2005-05-18 |
Family
ID=22103516
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99908068A Withdrawn EP1050132A4 (de) | 1998-01-19 | 1999-01-15 | Verfahren und vorrichtung zur übertragung einer vertraulichen nachricht an ausgewählte teilnehmer |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1050132A4 (de) |
JP (1) | JP2002510164A (de) |
CN (1) | CN1292185A (de) |
AU (1) | AU750042B2 (de) |
BR (1) | BR9907094A (de) |
CA (1) | CA2318452A1 (de) |
NO (1) | NO20003651L (de) |
WO (1) | WO1999037052A1 (de) |
Families Citing this family (19)
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 |
US20080170691A1 (en) * | 2005-03-10 | 2008-07-17 | Sung-Cheol Chang | Encryption And Decryption Device In Wireless Portable Internet System,And Method Thereof |
JP4823717B2 (ja) | 2006-02-28 | 2011-11-24 | 株式会社日立製作所 | 暗号通信システム、端末状態管理サーバ、暗号通信方法、および端末状態管理方法 |
KR101308023B1 (ko) | 2011-10-27 | 2013-09-26 | 국방과학연구소 | 수신자 프라이버시를 보호하는 브로드캐스트 암호화 방법 |
JP5875441B2 (ja) | 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 | データを暗号化する装置及び方法 |
CN112152906B (zh) | 2015-02-16 | 2023-04-07 | 钉钉控股(开曼)有限公司 | 通讯方法及服务器 |
CN106034068A (zh) | 2015-03-20 | 2016-10-19 | 阿里巴巴集团控股有限公司 | 群聊中进行私聊的方法、装置、客户端、服务器及系统 |
CN105610695B (zh) | 2015-12-21 | 2021-01-12 | 阿里巴巴集团控股有限公司 | 对象分配方法及装置 |
CN105681056B (zh) | 2016-01-13 | 2019-03-19 | 阿里巴巴集团控股有限公司 | 对象分配方法及装置 |
CN105812237B (zh) | 2016-03-07 | 2020-12-04 | 钉钉控股(开曼)有限公司 | 快速添加提醒对象的方法及装置 |
CN107306286B (zh) | 2016-04-21 | 2020-12-04 | 钉钉控股(开曼)有限公司 | 离线考勤的处理方法及装置 |
CN107305459A (zh) | 2016-04-25 | 2017-10-31 | 阿里巴巴集团控股有限公司 | 语音和多媒体消息的发送方法及装置 |
CN107368995A (zh) | 2016-05-13 | 2017-11-21 | 阿里巴巴集团控股有限公司 | 任务处理方法及装置 |
CN107800609B (zh) * | 2016-09-05 | 2021-06-01 | 阿里巴巴集团控股有限公司 | 通讯方法及装置 |
CN107846345A (zh) | 2016-09-18 | 2018-03-27 | 阿里巴巴集团控股有限公司 | 通讯方法及装置 |
GB2560587A (en) * | 2017-03-17 | 2018-09-19 | Univ Oxford Innovation Ltd | Secure data exchange |
CN117240620B (zh) * | 2023-11-13 | 2024-02-06 | 杭州金智塔科技有限公司 | 隐私集合求并集系统及方法 |
CN117473539B (zh) * | 2023-12-28 | 2024-04-26 | 深圳市乐凡信息科技有限公司 | 数据加密方法、数据解密方法、终端设备及可读存储介质 |
Citations (3)
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 |
GB2241414A (en) * | 1990-02-14 | 1991-08-28 | Enfranchise Sixty Ltd | Apparatus and method for data communication. |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
-
1999
- 1999-01-15 WO PCT/US1999/000896 patent/WO1999037052A1/en not_active Application Discontinuation
- 1999-01-15 CN CN99803467A patent/CN1292185A/zh active Pending
- 1999-01-15 JP JP2000540641A patent/JP2002510164A/ja active Pending
- 1999-01-15 CA CA002318452A patent/CA2318452A1/en not_active Abandoned
- 1999-01-15 BR BR9907094-4A patent/BR9907094A/pt not_active IP Right Cessation
- 1999-01-15 EP EP99908068A patent/EP1050132A4/de not_active Withdrawn
- 1999-01-15 AU AU27586/99A patent/AU750042B2/en not_active Ceased
-
2000
- 2000-07-17 NO NO20003651A patent/NO20003651L/no unknown
Patent Citations (3)
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 |
GB2241414A (en) * | 1990-02-14 | 1991-08-28 | Enfranchise Sixty Ltd | Apparatus and method for data communication. |
Non-Patent Citations (1)
Title |
---|
See also references of WO9937052A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2318452A1 (en) | 1999-07-22 |
NO20003651L (no) | 2000-09-18 |
AU2758699A (en) | 1999-08-02 |
BR9907094A (pt) | 2000-10-24 |
AU750042B2 (en) | 2002-07-11 |
EP1050132A4 (de) | 2005-05-18 |
NO20003651D0 (no) | 2000-07-17 |
CN1292185A (zh) | 2001-04-18 |
WO1999037052A1 (en) | 1999-07-22 |
JP2002510164A (ja) | 2002-04-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20000808 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20050406 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20060613 |