BR0115575A - Esquema de entrada de criptografia para sistemas de acesso condicional - Google Patents
Esquema de entrada de criptografia para sistemas de acesso condicionalInfo
- 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
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
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 (ja) |
JP (2) | JP2004515160A (ja) |
KR (2) | KR20030094217A (ja) |
CN (2) | CN1484901A (ja) |
AU (2) | AU2002212977A1 (ja) |
BR (2) | BR0115575A (ja) |
MX (2) | MXPA03004822A (ja) |
WO (2) | WO2002045337A2 (ja) |
Families Citing this family (12)
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 |
US7999685B2 (en) * | 2005-06-08 | 2011-08-16 | Koninklijke Philips Electronics N.V. | Deterministic key pre-distribution and operational key management for moblie body sensor networks |
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 |
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)
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 |
-
2001
- 2001-09-24 KR KR10-2003-7006413A patent/KR20030094217A/ko not_active Application Discontinuation
- 2001-09-24 EP EP01977153A patent/EP1348276A2/en not_active Withdrawn
- 2001-09-24 BR BR0115575-0A patent/BR0115575A/pt not_active IP Right Cessation
- 2001-09-24 WO PCT/US2001/029790 patent/WO2002045337A2/en active Application Filing
- 2001-09-24 AU AU2002212977A patent/AU2002212977A1/en not_active Abandoned
- 2001-09-24 MX MXPA03004822A patent/MXPA03004822A/es active IP Right Grant
- 2001-09-24 JP JP2002546357A patent/JP2004515160A/ja not_active Withdrawn
- 2001-09-24 AU AU2001296294A patent/AU2001296294A1/en not_active Abandoned
- 2001-09-24 CN CNA01819723XA patent/CN1484901A/zh active Pending
- 2001-09-24 BR BR0115573-3A patent/BR0115573A/pt not_active IP Right Cessation
- 2001-09-24 CN CNA018196888A patent/CN1483259A/zh active Pending
- 2001-09-24 EP EP01981324A patent/EP1366594A2/en not_active Withdrawn
- 2001-09-24 JP JP2002546354A patent/JP2004515159A/ja not_active Withdrawn
- 2001-09-24 MX MXPA03004599A patent/MXPA03004599A/es active IP Right Grant
- 2001-09-24 KR KR10-2003-7006964A patent/KR20040010565A/ko not_active Application Discontinuation
- 2001-09-24 WO PCT/US2001/029842 patent/WO2002045340A2/en active Search and Examination
Also Published As
Publication number | Publication date |
---|---|
MXPA03004822A (es) | 2003-09-25 |
KR20030094217A (ko) | 2003-12-11 |
JP2004515160A (ja) | 2004-05-20 |
AU2002212977A1 (en) | 2002-06-11 |
CN1484901A (zh) | 2004-03-24 |
EP1348276A2 (en) | 2003-10-01 |
WO2002045337A3 (en) | 2002-09-06 |
BR0115573A (pt) | 2003-07-29 |
JP2004515159A (ja) | 2004-05-20 |
WO2002045337A2 (en) | 2002-06-06 |
CN1483259A (zh) | 2004-03-17 |
WO2002045340A2 (en) | 2002-06-06 |
AU2001296294A1 (en) | 2002-06-11 |
WO2002045340A3 (en) | 2002-10-17 |
EP1366594A2 (en) | 2003-12-03 |
KR20040010565A (ko) | 2004-01-31 |
MXPA03004599A (es) | 2003-09-04 |
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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. |