TW200736954A - Method and system for managing keys and/or rights objects - Google Patents

Method and system for managing keys and/or rights objects

Info

Publication number
TW200736954A
TW200736954A TW095142629A TW95142629A TW200736954A TW 200736954 A TW200736954 A TW 200736954A TW 095142629 A TW095142629 A TW 095142629A TW 95142629 A TW95142629 A TW 95142629A TW 200736954 A TW200736954 A TW 200736954A
Authority
TW
Taiwan
Prior art keywords
file
location
valid
status bit
file contains
Prior art date
Application number
TW095142629A
Other languages
Chinese (zh)
Inventor
Oktay Rasizade
Bahman Qawami
Fabrice Jogand-Coulomb
Robert C Chang
Farshid Sabet-Sharghi
Original Assignee
Sandisk Corp
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 US11/283,221 external-priority patent/US8156563B2/en
Priority claimed from US11/283,225 external-priority patent/US20070116288A1/en
Application filed by Sandisk Corp filed Critical Sandisk Corp
Publication of TW200736954A publication Critical patent/TW200736954A/en

Links

Classifications

    • 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
    • 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
    • G06F21/70—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
    • G06F21/78—Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer to assure secure storage of data
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Software Systems (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Technology Law (AREA)
  • Storage Device Security (AREA)

Abstract

One or more rights objects (RO) files may be used for storing RO's preferably in the protected area available only to authenticated users. A RO navigation file is stored preferably in an unprotected public area containing status bits, where each status bit identifies whether a location in a RO file contains a valid RO or not. Preferably, there is a one-to-one correspondence between the location for a RO in a RO file and a location in the RO navigation file for the status bit which identifies whether its corresponding location in the RO file contains a valid RO or not. Whether a particular location in a RO file contains a valid RO or not can be found by checking its corresponding status bit in the RO navigation file. By finding out whether a particular location in a RO file contains a valid RO or not in this manner, it is possible to delete ROs without having to go through an authentication process. The process of finding an empty slot in the RO file for storing a new RO is also simplified. This greatly increases the efficiency of RO management. A similar system may be used for management of content encryption/ encryption keys for protecting content files.
TW095142629A 2005-11-18 2006-11-17 Method and system for managing keys and/or rights objects TW200736954A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/283,221 US8156563B2 (en) 2005-11-18 2005-11-18 Method for managing keys and/or rights objects
US11/283,225 US20070116288A1 (en) 2005-11-18 2005-11-18 System for managing keys and/or rights objects

Publications (1)

Publication Number Publication Date
TW200736954A true TW200736954A (en) 2007-10-01

Family

ID=38371958

Family Applications (1)

Application Number Title Priority Date Filing Date
TW095142629A TW200736954A (en) 2005-11-18 2006-11-17 Method and system for managing keys and/or rights objects

Country Status (5)

Country Link
EP (1) EP1949294A2 (en)
JP (1) JP2009516961A (en)
KR (1) KR20080068757A (en)
TW (1) TW200736954A (en)
WO (1) WO2007094874A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5209945B2 (en) * 2007-12-12 2013-06-12 株式会社日立製作所 Storage device, encryption content validation method, and terminal device
JP5821558B2 (en) * 2011-11-17 2015-11-24 ソニー株式会社 Information processing apparatus, information storage apparatus, information processing system, information processing method, and program
KR101416542B1 (en) 2012-12-24 2014-07-09 주식회사 로웸 Method for Apparatus for managing passcode
KR102289478B1 (en) * 2019-08-02 2021-08-13 주식회사 티모넷 System and method for providing electronic signature service

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4288751B2 (en) * 1999-05-25 2009-07-01 ソニー株式会社 Recording medium, data processing device
CN1187756C (en) * 1999-05-28 2005-02-02 松下电器产业株式会社 Semiconductor memory card, playback appts. recording appts. playback method, recording method, and computer-readable recording medium
TWI240250B (en) * 2001-07-09 2005-09-21 Matsushita Electric Ind Co Ltd Content management system and information recording medium

Also Published As

Publication number Publication date
WO2007094874A2 (en) 2007-08-23
WO2007094874A3 (en) 2007-12-06
EP1949294A2 (en) 2008-07-30
JP2009516961A (en) 2009-04-23
KR20080068757A (en) 2008-07-23

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