BRPI0406777A - Sistema de proteção de conteúdo, aparelho de geração de dados de chave e aparelho terminal - Google Patents
Sistema de proteção de conteúdo, aparelho de geração de dados de chave e aparelho terminalInfo
- Publication number
- BRPI0406777A BRPI0406777A BR0406777-0A BRPI0406777A BRPI0406777A BR PI0406777 A BRPI0406777 A BR PI0406777A BR PI0406777 A BRPI0406777 A BR PI0406777A BR PI0406777 A BRPI0406777 A BR PI0406777A
- Authority
- BR
- Brazil
- Prior art keywords
- key data
- protection system
- key
- content protection
- generating
- Prior art date
Links
Classifications
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/06—Network architectures or network communication protocols for network security for supporting key management in a packet data network
- H04L63/062—Network architectures or network communication protocols for network security for supporting key management in a packet data network for key distribution, e.g. centrally by trusted party
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/00086—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy
- G11B20/0021—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving encryption or decryption of contents recorded on or reproduced from a record carrier
-
- 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)
- H04L9/0822—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) using key encryption key
-
- 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
- H04L9/0836—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 using tree structure or hierarchical structure
-
- 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
- H04L9/0891—Revocation or update of secret information, e.g. encryption key update or rekeying
-
- 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
- H04L9/30—Public key, i.e. encryption algorithm being computationally infeasible to invert or user's encryption keys not requiring secrecy
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L2463/00—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00
- H04L2463/101—Additional details relating to network architectures or network communication protocols for network security covered by H04L63/00 applying security measures for digital rights management
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L63/00—Network architectures or network communication protocols for network security
- H04L63/04—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks
- H04L63/0428—Network architectures or network communication protocols for network security for providing a confidential data exchange among entities communicating through data packet networks wherein the data content is protected, e.g. by encrypting or encapsulating the payload
Abstract
"SISTEMA DE PROTEçãO DE CONTEúDO, APARELHO DE GERAçãO DE DADOS DE CHAVE E APARELHO TERMINAL". A presente invenção refere-se a um sistema de proteção de conteúdo que impede a aquisição ilegal de chave, sem verificar a singularidade de chaves de dispositivo. O sistema de proteção de conteúdo inclui um aparelho de geração de dados de chave e um terminal de usuário. O aparelho de geração de dados de chave converter os primeiros dados de chave, os quais são para utilizar o conteúdo, com base em uma regra de conversão predeterminada, desse modo gerando os segundos dados de chave, criptografa os segundos dados de chave utilizando uma chave de dispositivo mantida por terminais válidos e emite os dados de chave criptografados. O terminal do usuário obtém os dados de chave criptografados, descriptografa os dados de chave criptografados utilizando uma chave de dispositivo mantida pelo terminal do usuário, desse modo gerando os segundos dados de chave, converte os segundos dados de chave com base em uma regra de reconversão correspondendo à regra de conversão, desse modo gerando os primeiros dados de chave e utiliza o conteúdo com o uso dos primeiros dados de chave gerados.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003007349 | 2003-01-15 | ||
JP2003101455 | 2003-04-04 | ||
PCT/JP2004/000155 WO2004064313A1 (en) | 2003-01-15 | 2004-01-13 | Content protection system, key data generation apparatus, and terminal appparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
BRPI0406777A true BRPI0406777A (pt) | 2006-01-17 |
BRPI0406777B1 BRPI0406777B1 (pt) | 2017-12-26 |
Family
ID=32716403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI0406777A BRPI0406777B1 (pt) | 2003-01-15 | 2004-01-13 | sistema de proteção de conteúdo, aparelho de geração de dados de chave e aparelho terminal |
Country Status (9)
Country | Link |
---|---|
US (2) | US7386126B2 (pt) |
EP (1) | EP1593229B1 (pt) |
JP (1) | JP4574175B2 (pt) |
KR (1) | KR101019321B1 (pt) |
BR (1) | BRPI0406777B1 (pt) |
DE (1) | DE602004029555D1 (pt) |
MX (1) | MXPA05007498A (pt) |
RU (1) | RU2369024C2 (pt) |
WO (1) | WO2004064313A1 (pt) |
Families Citing this family (21)
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US7340603B2 (en) * | 2002-01-30 | 2008-03-04 | Sony Corporation | Efficient revocation of receivers |
JP4602702B2 (ja) * | 2003-06-18 | 2010-12-22 | パナソニック株式会社 | コンテンツ再生装置、コンテンツ再生方法、及びプログラム |
JP2005190350A (ja) * | 2003-12-26 | 2005-07-14 | Toshiba Corp | コンテンツ送信装置及びコンテンツ送信方法 |
JP2006014035A (ja) * | 2004-06-28 | 2006-01-12 | Toshiba Corp | 記憶媒体処理方法、記憶媒体処理装置及びプログラム |
JP4783023B2 (ja) * | 2005-01-18 | 2011-09-28 | パナソニック株式会社 | 記録媒体、再生装置、及びコンテンツ再生方法 |
KR100717005B1 (ko) * | 2005-04-06 | 2007-05-10 | 삼성전자주식회사 | 폐기 키를 결정하는 방법 및 장치와 이것을 이용하여복호화하는 방법 및 장치 |
KR20060107282A (ko) * | 2005-04-07 | 2006-10-13 | 엘지전자 주식회사 | 데이터 재생방법, 데이터 기록재생 플레이어 및 데이터전송방법 |
JP2007013440A (ja) | 2005-06-29 | 2007-01-18 | Toshiba Corp | メディア鍵生成方法、メディア鍵生成装置、再生装置、及び記録再生装置 |
JP4589963B2 (ja) * | 2005-07-29 | 2010-12-01 | パナソニック株式会社 | 記録装置 |
FR2899748B1 (fr) * | 2006-04-07 | 2008-11-28 | Thales Sa | Schema de diffusion hybride efficace, adapte a une faible bande passante |
US7831043B2 (en) * | 2006-08-27 | 2010-11-09 | International Business Machines Corporation | System and method for cryptographically authenticating data items |
US20080226078A1 (en) * | 2007-03-12 | 2008-09-18 | Microsoft Corporation | Enabling recording and copying data |
JP4600408B2 (ja) * | 2007-03-19 | 2010-12-15 | 株式会社日立製作所 | コンテンツ再生方法及び記録再生装置 |
US9729316B2 (en) * | 2008-02-27 | 2017-08-08 | International Business Machines Corporation | Unified broadcast encryption system |
US8516590B1 (en) | 2009-04-25 | 2013-08-20 | Dasient, Inc. | Malicious advertisement detection and remediation |
US8555391B1 (en) | 2009-04-25 | 2013-10-08 | Dasient, Inc. | Adaptive scanning |
US8370938B1 (en) * | 2009-04-25 | 2013-02-05 | Dasient, Inc. | Mitigating malware |
US8254580B2 (en) * | 2009-09-30 | 2012-08-28 | Telefonaktiebolaget L M Ericsson (Publ) | Key distribution in a hierarchy of nodes |
WO2012049776A1 (ja) * | 2010-10-15 | 2012-04-19 | 富士通株式会社 | 鍵設定方法、鍵生成方法、鍵設定装置および鍵生成装置 |
US9294276B2 (en) | 2014-02-10 | 2016-03-22 | International Business Machines Corporation | Countering server-based attacks on encrypted content |
JP2023042903A (ja) * | 2021-09-15 | 2023-03-28 | 株式会社東芝 | 通信装置、通信方法および通信システム |
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HU216669B (hu) | 1990-09-19 | 1999-08-30 | Koninklijke Philips Electronics N.V. | Információhordozó fő adatállománnyal és vezérlőállománnyal, eljárás és készülék ezen állományok rögzítésére, valamint készülék azok kiolvasására |
JP2546504B2 (ja) * | 1993-07-14 | 1996-10-23 | 日本電気株式会社 | 暗号における暗号化前処理装置および復号後処理装置 |
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-
2004
- 2004-01-13 EP EP04701676A patent/EP1593229B1/en not_active Expired - Lifetime
- 2004-01-13 KR KR1020057012644A patent/KR101019321B1/ko active IP Right Grant
- 2004-01-13 MX MXPA05007498A patent/MXPA05007498A/es active IP Right Grant
- 2004-01-13 US US10/755,327 patent/US7386126B2/en active Active
- 2004-01-13 BR BRPI0406777A patent/BRPI0406777B1/pt active IP Right Grant
- 2004-01-13 RU RU2005125741/09A patent/RU2369024C2/ru active
- 2004-01-13 DE DE602004029555T patent/DE602004029555D1/de not_active Expired - Lifetime
- 2004-01-13 WO PCT/JP2004/000155 patent/WO2004064313A1/en active Application Filing
- 2004-01-14 JP JP2004007060A patent/JP4574175B2/ja not_active Expired - Lifetime
-
2008
- 2008-04-30 US US12/112,670 patent/US8144869B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
WO2004064313A1 (en) | 2004-07-29 |
MXPA05007498A (es) | 2005-09-21 |
US8144869B2 (en) | 2012-03-27 |
DE602004029555D1 (de) | 2010-11-25 |
US20040156509A1 (en) | 2004-08-12 |
RU2369024C2 (ru) | 2009-09-27 |
KR101019321B1 (ko) | 2011-03-07 |
EP1593229B1 (en) | 2010-10-13 |
BRPI0406777B1 (pt) | 2017-12-26 |
KR20050091763A (ko) | 2005-09-15 |
EP1593229A1 (en) | 2005-11-09 |
RU2005125741A (ru) | 2006-01-10 |
JP2004320719A (ja) | 2004-11-11 |
JP4574175B2 (ja) | 2010-11-04 |
US7386126B2 (en) | 2008-06-10 |
US20080205652A1 (en) | 2008-08-28 |
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