WO2006078100A3 - Recording medium, apparatus for decrypting data and method thereof - Google Patents

Recording medium, apparatus for decrypting data and method thereof Download PDF

Info

Publication number
WO2006078100A3
WO2006078100A3 PCT/KR2006/000031 KR2006000031W WO2006078100A3 WO 2006078100 A3 WO2006078100 A3 WO 2006078100A3 KR 2006000031 W KR2006000031 W KR 2006000031W WO 2006078100 A3 WO2006078100 A3 WO 2006078100A3
Authority
WO
WIPO (PCT)
Prior art keywords
recording medium
data
key
decrypting
local storage
Prior art date
Application number
PCT/KR2006/000031
Other languages
French (fr)
Other versions
WO2006078100A2 (en
Inventor
Kang Soo Seo
Original Assignee
Lg Electronics Inc
Kang Soo Seo
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
Priority claimed from KR1020050109694A external-priority patent/KR101147763B1/en
Application filed by Lg Electronics Inc, Kang Soo Seo filed Critical Lg Electronics Inc
Priority to EP06700313A priority Critical patent/EP1839307A4/en
Priority to CN2006800023736A priority patent/CN101103406B/en
Priority to JP2007552052A priority patent/JP4823235B2/en
Priority to BRPI0606604-6A priority patent/BRPI0606604A2/en
Publication of WO2006078100A2 publication Critical patent/WO2006078100A2/en
Publication of WO2006078100A3 publication Critical patent/WO2006078100A3/en

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
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F21/00—Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • 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
    • G11B20/00224—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 remote server
    • 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
    • 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
    • G11B20/00086—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
    • 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
    • G11B20/00681—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access
    • G11B20/00695—Circuits for prevention of unauthorised reproduction or copying, e.g. piracy involving measures which prevent a specific kind of data access said measures preventing that data are read from the recording medium
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/34—Indicating arrangements 
    • 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
    • G11B20/12—Formatting, e.g. arrangement of data block or words on the record carriers
    • G11B2020/1264—Formatting, e.g. arrangement of data block or words on the record carriers wherein the formatting concerns a specific kind of data
    • G11B2020/1288—Formatting by padding empty spaces with dummy data, e.g. writing zeroes or random data when de-icing optical discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Technology Law (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)

Abstract

A recording medium, apparatus for decrypting data and method thereof are disclosed. The present invention includes downloading encrypted data associated with a recording medium to a local storage, decrypting data recorded in the recording medium using a first type key within a key file stored in the recording medium and decrypting the downloaded data using a second type key within one of the key file stored in the recording medium or a key file stored in the local storage. And, the present invention includes downloading the data encrypted with a key associated with a recording medium to a local storage, reading out a decryption key using link information between the data and the key, and decrypting the data using the decryption key. Accordingly, by the present invention, unauthorized copy, redistribution and the like of contents can be prevented. Hence contents can be safely provided and data can be efficiently reproduced, whereby more convenient functions can be provided to a user.
PCT/KR2006/000031 2005-01-19 2006-01-04 Recording medium, apparatus for decrypting data and method thereof WO2006078100A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06700313A EP1839307A4 (en) 2005-01-19 2006-01-04 Recording medium, apparatus for decrypting data and method thereof
CN2006800023736A CN101103406B (en) 2005-01-19 2006-01-04 Apparatus for decrypting data and method thereof
JP2007552052A JP4823235B2 (en) 2005-01-19 2006-01-04 DATA REPRODUCING METHOD, DATA REPRODUCING DEVICE, RECORDING MEDIUM, DATA RECORDING METHOD, AND DATA RECORDING DEVICE
BRPI0606604-6A BRPI0606604A2 (en) 2005-01-19 2006-01-04 method and apparatus for decrypting data, recording medium

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US64458805P 2005-01-19 2005-01-19
US60/644,588 2005-01-19
KR10-2005-0109694 2005-11-16
KR1020050109694A KR101147763B1 (en) 2005-01-19 2005-11-16 Data decryption method and apparatus, recoding medium comprising encrypted data

Publications (2)

Publication Number Publication Date
WO2006078100A2 WO2006078100A2 (en) 2006-07-27
WO2006078100A3 true WO2006078100A3 (en) 2006-11-23

Family

ID=36692640

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2006/000031 WO2006078100A2 (en) 2005-01-19 2006-01-04 Recording medium, apparatus for decrypting data and method thereof

Country Status (2)

Country Link
EP (1) EP1839307A4 (en)
WO (1) WO2006078100A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015136964A1 (en) * 2014-03-14 2015-09-17 オムロン株式会社 License information management device, license information management method, and program

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002374244A (en) * 2001-06-13 2002-12-26 Kenwood Corp Information distribution method
JP2004087063A (en) * 2002-07-02 2004-03-18 Sony Corp Data recording medium, medium information recording method, medium information recording device, medium information reproducing method, medium information reproducing device, information service method, and information service system
WO2004114303A1 (en) * 2003-06-18 2004-12-29 Matsushita Electric Industrial Co., Ltd. Playback apparatus, playback method, and program for reproducing an encrypted virtual package

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100415872B1 (en) * 1994-10-10 2004-04-30 코닌클리케 필립스 일렉트로닉스 엔.브이. Database System and Database Super System
JP2003533112A (en) * 2000-05-11 2003-11-05 松下電器産業株式会社 Content receiving terminal and recording medium
US20020076204A1 (en) * 2000-12-18 2002-06-20 Toshihisa Nakano Key management device/method/program, recording medium, reproducing device/method, recording device, and computer-readable, second recording medium storing the key management program for copyright protection
ES2309194T3 (en) * 2001-10-12 2008-12-16 Koninklijke Philips Electronics N.V. METHOD AND SYSTEM FOR THE SAFE DISTRIBUTION OF CONTENTS.
JP4649865B2 (en) * 2003-11-06 2011-03-16 ソニー株式会社 Information processing apparatus, information recording medium, information processing method, and computer program
JP4892977B2 (en) * 2004-01-29 2012-03-07 ソニー株式会社 Information processing apparatus, information processing method, and computer program

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002374244A (en) * 2001-06-13 2002-12-26 Kenwood Corp Information distribution method
JP2004087063A (en) * 2002-07-02 2004-03-18 Sony Corp Data recording medium, medium information recording method, medium information recording device, medium information reproducing method, medium information reproducing device, information service method, and information service system
WO2004114303A1 (en) * 2003-06-18 2004-12-29 Matsushita Electric Industrial Co., Ltd. Playback apparatus, playback method, and program for reproducing an encrypted virtual package

Also Published As

Publication number Publication date
WO2006078100A2 (en) 2006-07-27
EP1839307A2 (en) 2007-10-03
EP1839307A4 (en) 2010-01-27

Similar Documents

Publication Publication Date Title
WO2003025930A1 (en) Recording medium reproduction method and reproduction apparatus, and recording medium recording method and recording apparatus
EP0950941A3 (en) Method of and apparatus for protecting data on storage medium and storage medium
WO2004023524A3 (en) Storage medium rental system
CN100367247C (en) Method for managing copy protection information of recordingmedium
EP1505594A3 (en) Access control for digital content
TW200606734A (en) Recording medium, and device and method for recording information on recording medium
DE60224480D1 (en) Apparatus and method for protected recording and playback of digital content
IN2012DN01977A (en)
WO2003007298A3 (en) Content reading apparatus with usage rights judgements
WO2006046099A3 (en) Content playback apparatus, content playback method, computer program, key relay apparatus, and recording medium
EP1622302A3 (en) System and method for authentication between a recorder/reproducer device and a recording device
EP1505595A3 (en) Access control for digital content
EP1176754A3 (en) System, method and apparatus for key distribution and program providing medium
WO2005086160A3 (en) Content playback device
RU2007131426A (en) METHOD FOR DATA TRANSFER, RECORDING MEDIA, DEVICE AND METHOD FOR PLAYING DATA FROM RECORDING MEDIA USING A LOCAL STORING DEVICE
EP1499063A3 (en) Contents recording apparatus, recording medium, contents reproducing apparatus, contents transmission method, transmission medium, and contents reception method
WO2005015557A3 (en) Reproducing encrypted content using region keys
JP2005529422A5 (en)
TW200502758A (en) Portable secure information accessing system and method thereof
JP2006079449A5 (en)
WO2006073252A3 (en) Apparatus for reproducing data, method thereof and recording medium
JP2008234544A (en) File encrypting/decrypting system, file encrypting/decrypting method and file encrypting/decrypting program
WO2003098411A3 (en) Use of smart card technology in the protection of fixed storage entertainment assets
DE60215016D1 (en) Apparatus and method for playing back user data
WO2003034227A3 (en) Apparatus and method for reading or writing user data

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2184/KOLNP/2007

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2006700313

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 200680002373.6

Country of ref document: CN

WWE Wipo information: entry into national phase

Ref document number: 2007552052

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 2007131440

Country of ref document: RU

WWP Wipo information: published in national office

Ref document number: 2006700313

Country of ref document: EP

ENP Entry into the national phase

Ref document number: PI0606604

Country of ref document: BR

Kind code of ref document: A2