CA2372552A1 - Information recording/reproducing apparatus and method - Google Patents

Information recording/reproducing apparatus and method Download PDF

Info

Publication number
CA2372552A1
CA2372552A1 CA002372552A CA2372552A CA2372552A1 CA 2372552 A1 CA2372552 A1 CA 2372552A1 CA 002372552 A CA002372552 A CA 002372552A CA 2372552 A CA2372552 A CA 2372552A CA 2372552 A1 CA2372552 A1 CA 2372552A1
Authority
CA
Canada
Prior art keywords
key
generation
information
managed
renewed
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.)
Abandoned
Application number
CA002372552A
Other languages
English (en)
French (fr)
Inventor
Tomoyuki Asano
Yoshitomo Osawa
Ryuta Taki
Ryuji Ishiguro
Tateo Oishi
Atsushi Mitsuzawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sony Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2372552A1 publication Critical patent/CA2372552A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • G11B20/00094—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers
    • G11B20/00115—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised record carriers wherein the record carrier stores a unique medium identifier
    • 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
    • G11B20/00188—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier
    • G11B20/00195—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which result in a restriction to authorised devices recording or reproducing contents to/from a record carrier using a device identifier associated with the player or recorder, e.g. serial numbers of playback apparatuses or MAC addresses
    • 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
    • G11B20/00217—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source
    • G11B20/00253—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 the cryptographic key used for encryption and/or decryption of contents recorded on or reproduced from the record carrier being read from a specific source wherein the key is stored on the record carrier
    • 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
    • G11B20/00485—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
    • G11B20/00492—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
    • G11B20/00507—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein consecutive physical data units of the record carrier are encrypted with separate encryption keys, e.g. the key changes on a cluster or sector basis
    • 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
    • G11B20/00485—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier
    • G11B20/00492—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted
    • G11B20/00528—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 characterised by a specific kind of data which is encrypted and recorded on and/or reproduced from the record carrier wherein content or user data is encrypted wherein each title is encrypted with a separate encryption key for each title, e.g. title key for movie, song or data file
    • 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
    • G11B20/10—Digital recording or reproducing
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Storage Device Security (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
CA002372552A 2000-04-06 2001-04-06 Information recording/reproducing apparatus and method Abandoned CA2372552A1 (en)

Applications Claiming Priority (9)

Application Number Priority Date Filing Date Title
JP2000-105328 2000-04-06
JP2000105328 2000-04-06
JP2000-106039 2000-04-07
JP2000106039 2000-04-07
JP2000170604 2000-06-07
JP2000-170604 2000-06-07
JP2000-391976 2000-12-25
JP2000391976A JP4370721B2 (ja) 2000-04-06 2000-12-25 情報記録装置、情報再生装置、情報記録方法、情報再生方法、キー更新端末装置、世代管理キー更新方法、および情報記録媒体、並びにプログラム提供媒体
PCT/JP2001/003004 WO2001078301A1 (en) 2000-04-06 2001-04-06 Information recording/reproducing apparatus and method

Publications (1)

Publication Number Publication Date
CA2372552A1 true CA2372552A1 (en) 2001-10-18

Family

ID=27481199

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002372552A Abandoned CA2372552A1 (en) 2000-04-06 2001-04-06 Information recording/reproducing apparatus and method

Country Status (8)

Country Link
EP (1) EP1185023A4 (https=)
JP (1) JP4370721B2 (https=)
KR (1) KR100746537B1 (https=)
CN (1) CN1383643A (https=)
AU (1) AU4685701A (https=)
CA (1) CA2372552A1 (https=)
RU (1) RU2002100080A (https=)
WO (1) WO2001078301A1 (https=)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1623420B1 (en) 2003-06-18 2015-11-11 Panasonic Intellectual Property Management Co., Ltd. Playback apparatus, playback method, and program for reproducing an encrypted virtual package
JP4239747B2 (ja) 2003-08-07 2009-03-18 ソニー株式会社 情報処理装置、およびコンテンツ情報管理方法、並びにコンピュータ・プログラム
JP4081048B2 (ja) * 2004-06-18 2008-04-23 株式会社東芝 コンテンツ保護方法、装置及びプログラム
KR100612215B1 (ko) * 2004-07-24 2006-08-16 삼성전자주식회사 비밀번호를 이용하는 데이터 기록/재생 장치 및 그 방법
JP4717398B2 (ja) * 2004-09-10 2011-07-06 キヤノン株式会社 データ処理装置の制御方法
CN100470573C (zh) * 2004-12-13 2009-03-18 松下电器产业株式会社 非授权设备检测设备、非授权设备检测系统及其非授权设备检测方法
JP4715233B2 (ja) * 2005-02-25 2011-07-06 ソニー株式会社 情報処理装置、および情報記録媒体製造方法、並びにコンピュータ・プログラム
US8235286B2 (en) 2005-12-19 2012-08-07 International Frontier Technology Laboratory, Inc. Card capable of authentication
JP5141099B2 (ja) * 2007-06-12 2013-02-13 株式会社日立製作所 アクセス鍵自動配信システム
CN101883115B (zh) * 2010-06-25 2013-04-17 北京交通大学 接入认证方法及系统
US9674165B2 (en) * 2015-05-28 2017-06-06 Nxp B.V. Efficient key derivation with forward secrecy
CN114241632B (zh) * 2021-11-29 2024-11-22 歌尔科技有限公司 一种车辆解锁方法、可穿戴设备及智能解锁系统

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5081677A (en) 1990-08-31 1992-01-14 International Business Machines Corp. Crypotographic key version control facility
DE19511298B4 (de) * 1995-03-28 2005-08-18 Deutsche Telekom Ag Verfahren zur Erteilung und zum Entzug der Berechtigung zum Empfang von Rundfunksendungen und Decoder
JPH103256A (ja) * 1995-10-16 1998-01-06 Sony Corp 暗号化方法、暗号化装置、記録方法、復号化方法、復号化装置及び記録媒体
KR970024712A (ko) 1995-10-16 1997-05-30 이데이 노부유키 암호화 방법 및 암호화 장치 및 기록 방법 및 복호 방법 및 복호 장치 및 기록 매체
JP3625356B2 (ja) * 1997-04-18 2005-03-02 株式会社東芝 外部記憶装置、暗号化ユニット装置、復号化ユニット装置、暗号化システム、復号化システム、暗号化方法及び復号化方法
JP3588536B2 (ja) * 1997-07-11 2004-11-10 株式会社東芝 不正データコピー防止装置及び方法
JPH11126425A (ja) * 1997-10-24 1999-05-11 Sony Corp 光ディスク装置、光ディスクの再生方法及び光ディスク
JPH11187013A (ja) * 1997-12-24 1999-07-09 Ibm Japan Ltd 暗号鍵配信システム
KR20000076003A (ko) * 1998-01-07 2000-12-26 이데이 노부유끼 정보 처리 시스템, 정보 처리 장치 및 정보 처리 방법
JP3608933B2 (ja) * 1998-02-27 2005-01-12 松下電器産業株式会社 秘密情報変更システム
JPH11250571A (ja) * 1998-03-04 1999-09-17 Matsushita Electric Ind Co Ltd 情報配布装置と端末装置及び情報配布システム
JP4505693B2 (ja) 1998-12-11 2010-07-21 ソニー株式会社 情報処理装置および情報処理方法、並びに記録媒体

Also Published As

Publication number Publication date
JP4370721B2 (ja) 2009-11-25
CN1383643A (zh) 2002-12-04
EP1185023A1 (en) 2002-03-06
KR100746537B1 (ko) 2007-08-06
WO2001078301A1 (en) 2001-10-18
EP1185023A4 (en) 2006-10-18
JP2002063763A (ja) 2002-02-28
AU4685701A (en) 2001-10-23
RU2002100080A (ru) 2003-08-10
KR20020021120A (ko) 2002-03-18

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MXPA01012402A (es) Aparato y metodo de registro / reproduccion de informacion.

Legal Events

Date Code Title Description
FZDE Discontinued