CN1248142C - 数据处理方法 - Google Patents

数据处理方法 Download PDF

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Publication number
CN1248142C
CN1248142C CNB011407743A CN01140774A CN1248142C CN 1248142 C CN1248142 C CN 1248142C CN B011407743 A CNB011407743 A CN B011407743A CN 01140774 A CN01140774 A CN 01140774A CN 1248142 C CN1248142 C CN 1248142C
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CN
China
Prior art keywords
data
key
content
encrypted
ekb
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.)
Expired - Fee Related
Application number
CNB011407743A
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English (en)
Chinese (zh)
Other versions
CN1338698A (zh
Inventor
冈上拓己
石黑隆二
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
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Sony Corp
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Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of CN1338698A publication Critical patent/CN1338698A/zh
Application granted granted Critical
Publication of CN1248142C publication Critical patent/CN1248142C/zh
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Expired - Fee Related legal-status Critical Current

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    • 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
    • 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
    • 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
    • G11B20/00536—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 encrypted content data is subjected to a further, iterated encryption, e.g. interwoven encryption

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  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Storage Device Security (AREA)
CNB011407743A 2000-07-24 2001-07-24 数据处理方法 Expired - Fee Related CN1248142C (zh)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000222122 2000-07-24
JP222122/00 2000-07-24
JP2000247460A JP2002108710A (ja) 2000-07-24 2000-08-17 情報処理システム、情報処理方法、および情報処理装置、並びにプログラム提供媒体
JP247460/00 2000-08-17

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN2005100996634A Division CN1953365B (zh) 2000-07-24 2001-07-24 数据处理系统和数据处理装置

Publications (2)

Publication Number Publication Date
CN1338698A CN1338698A (zh) 2002-03-06
CN1248142C true CN1248142C (zh) 2006-03-29

Family

ID=26596528

Family Applications (2)

Application Number Title Priority Date Filing Date
CNB011407743A Expired - Fee Related CN1248142C (zh) 2000-07-24 2001-07-24 数据处理方法
CN2005100996634A Expired - Fee Related CN1953365B (zh) 2000-07-24 2001-07-24 数据处理系统和数据处理装置

Family Applications After (1)

Application Number Title Priority Date Filing Date
CN2005100996634A Expired - Fee Related CN1953365B (zh) 2000-07-24 2001-07-24 数据处理系统和数据处理装置

Country Status (7)

Country Link
US (1) US7131010B2 (OSRAM)
EP (1) EP1176754A3 (OSRAM)
JP (1) JP2002108710A (OSRAM)
KR (1) KR100843942B1 (OSRAM)
CN (2) CN1248142C (OSRAM)
SG (1) SG108264A1 (OSRAM)
TW (1) TW538360B (OSRAM)

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Also Published As

Publication number Publication date
US20020116622A1 (en) 2002-08-22
KR100843942B1 (ko) 2008-07-03
CN1953365B (zh) 2011-11-09
EP1176754A3 (en) 2004-12-01
CN1953365A (zh) 2007-04-25
JP2002108710A (ja) 2002-04-12
SG108264A1 (en) 2005-01-28
TW538360B (en) 2003-06-21
EP1176754A2 (en) 2002-01-30
HK1046742A1 (en) 2003-01-24
US7131010B2 (en) 2006-10-31
KR20020009464A (ko) 2002-02-01
CN1338698A (zh) 2002-03-06

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