WO2004095162A3 - Method for managing copy protection information of recording medium - Google Patents

Method for managing copy protection information of recording medium Download PDF

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Publication number
WO2004095162A3
WO2004095162A3 PCT/KR2004/000952 KR2004000952W WO2004095162A3 WO 2004095162 A3 WO2004095162 A3 WO 2004095162A3 KR 2004000952 W KR2004000952 W KR 2004000952W WO 2004095162 A3 WO2004095162 A3 WO 2004095162A3
Authority
WO
WIPO (PCT)
Prior art keywords
copy protection
protection information
optical disc
recorded
recording medium
Prior art date
Application number
PCT/KR2004/000952
Other languages
French (fr)
Other versions
WO2004095162A2 (en
Inventor
Byung Jin Kim
Hyung Sun Kim
Original Assignee
Lg Electronics Inc
Byung Jin Kim
Hyung Sun Kim
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 Lg Electronics Inc, Byung Jin Kim, Hyung Sun Kim filed Critical Lg Electronics Inc
Priority to BRPI0409693-2A priority Critical patent/BRPI0409693A/en
Priority to JP2006507822A priority patent/JP2006526244A/en
Priority to EP04729378A priority patent/EP1623414A4/en
Publication of WO2004095162A2 publication Critical patent/WO2004095162A2/en
Publication of WO2004095162A3 publication Critical patent/WO2004095162A3/en

Links

Classifications

    • 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
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/12—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark
    • G11B19/122—Control of operating function, e.g. switching from recording to reproducing by sensing distinguishing features of or on records, e.g. diameter end mark involving the detection of an identification or authentication mark
    • 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
    • G11B20/00188—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
    • 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
    • G11B20/00246—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 obtained from a local device, e.g. device key initially stored by the player or by the recorder
    • 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
    • G11B20/00369—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 wherein a first key, which is usually stored on a hidden channel, e.g. in the lead-in of a BD-R, unlocks a key locker containing a second
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/007—Arrangement of the information on the record carrier, e.g. form of tracks, actual track shape, e.g. wobbled, or cross-section, e.g. v-shaped; Sequential information structures, e.g. sectoring or header formats within a track
    • G11B7/00736—Auxiliary data, e.g. lead-in, lead-out, Power Calibration Area [PCA], Burst Cutting Area [BCA], control information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G11B7/0053—Reproducing non-user data, e.g. wobbled address, prepits, BCA
    • 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
    • H04L2209/605—Copy protection

Abstract

A method for managing copy protection information of a recording medium is disclosed. Copy protection information for decrypting A/V data encrypted and recorded in a data area of an optical disc such as a CD, a DVD or a BD is recorded in a key locker in the optical disc. A first key value for reading the copy protection information is recorded in a specific area of the optical disc, and a second key value for reading the copy protection information is managed in an optical disc drive or in an application. To reproduce the A/V data in the optical disc, the copy protection information recorded in the key locker is read and decrypted by a combination of a hidden code (having the first key value) recorded in the optical disc and a drive or application key (having the second key value) managed in the optical disc drive or application. This significantly improves the security of the copy protection information.
PCT/KR2004/000952 2003-04-24 2004-04-24 Method for managing copy protection information of recording medium WO2004095162A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BRPI0409693-2A BRPI0409693A (en) 2003-04-24 2004-04-24 method for managing media copy protection information
JP2006507822A JP2006526244A (en) 2003-04-24 2004-04-24 Copying prevention information management method for recording media
EP04729378A EP1623414A4 (en) 2003-04-24 2004-04-24 Method for managing copy protection information of recording medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020030026148A KR100974448B1 (en) 2003-04-24 2003-04-24 Method for managing a copy protection information of optical disc
KR10-2003-0026148 2003-04-24

Publications (2)

Publication Number Publication Date
WO2004095162A2 WO2004095162A2 (en) 2004-11-04
WO2004095162A3 true WO2004095162A3 (en) 2005-01-13

Family

ID=36143556

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/000952 WO2004095162A2 (en) 2003-04-24 2004-04-24 Method for managing copy protection information of recording medium

Country Status (7)

Country Link
US (2) US20040213111A1 (en)
EP (1) EP1623414A4 (en)
JP (1) JP2006526244A (en)
KR (1) KR100974448B1 (en)
CN (1) CN100385521C (en)
BR (1) BRPI0409693A (en)
WO (1) WO2004095162A2 (en)

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WO2018091946A1 (en) * 2016-11-18 2018-05-24 Permanent Privacy Ltd. Protections for unauthorized copying (anti-cloning) method and system

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KR100974448B1 (en) 2010-08-10
JP2006526244A (en) 2006-11-16
US20080175389A1 (en) 2008-07-24
CN1777934A (en) 2006-05-24
WO2004095162A2 (en) 2004-11-04
EP1623414A2 (en) 2006-02-08
KR20040092648A (en) 2004-11-04
US20040213111A1 (en) 2004-10-28
BRPI0409693A (en) 2006-04-18
EP1623414A4 (en) 2010-02-17
CN100385521C (en) 2008-04-30

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