WO2004023275A3 - Group management system, group management device, and member device - Google Patents

Group management system, group management device, and member device Download PDF

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Publication number
WO2004023275A3
WO2004023275A3 PCT/JP2003/010901 JP0310901W WO2004023275A3 WO 2004023275 A3 WO2004023275 A3 WO 2004023275A3 JP 0310901 W JP0310901 W JP 0310901W WO 2004023275 A3 WO2004023275 A3 WO 2004023275A3
Authority
WO
WIPO (PCT)
Prior art keywords
group
member devices
secret information
common secret
contents
Prior art date
Application number
PCT/JP2003/010901
Other languages
French (fr)
Other versions
WO2004023275A2 (en
Inventor
Natsume Matsuzaki
Toshihisa Abe
Toshihisa Nakano
Yuichi Futa
Masaya Miyazaki
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Priority to EP03794106A priority Critical patent/EP1537466A2/en
Publication of WO2004023275A2 publication Critical patent/WO2004023275A2/en
Publication of WO2004023275A3 publication Critical patent/WO2004023275A3/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
    • G06F21/10—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM]
    • G06F21/101—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM] by binding digital rights to specific entities
    • G06F21/1012—Protecting distributed programs or content, e.g. vending or licensing of copyrighted material ; Digital rights management [DRM] by binding digital rights to specific entities to domains
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
    • H04N21/83—Generation or processing of protective or descriptive data associated with content; Content structuring
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2103—Challenge-response
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2221/00—Indexing scheme relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/21—Indexing scheme relating to G06F21/00 and subgroups addressing additional information or applications relating to security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
    • G06F2221/2117—User registration

Abstract

A group formation/management system that rigidly sets the range of a group, and allows contents to be used freely among member devices in the group, the system including one or more registered member devices operable to hold common secret information unique to the group, a new member device operable to transmit a request for registration in the group and to receive and hold common secret information, and a group management device operable to receive the registration request from the new member device and, when the number of registered member devices is less than the maximum number of registerable member devices, to output the common secret information to the new member device. Furthermore, because member devices are authenticated using the common secret information when contents are to be used, and contents only delivered if the authentication is successful, it is possible to prevent member devices that do not hold the common secret information (i.e. unregistered member devices) from using contents.
PCT/JP2003/010901 2002-09-05 2003-08-28 Group management system, group management device, and member device WO2004023275A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP03794106A EP1537466A2 (en) 2002-09-05 2003-08-28 Group management system, group management device, and member device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002-260520 2002-09-05
JP2002260520 2002-09-05

Publications (2)

Publication Number Publication Date
WO2004023275A2 WO2004023275A2 (en) 2004-03-18
WO2004023275A3 true WO2004023275A3 (en) 2004-08-12

Family

ID=31973102

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/010901 WO2004023275A2 (en) 2002-09-05 2003-08-28 Group management system, group management device, and member device

Country Status (6)

Country Link
US (2) US7441117B2 (en)
EP (2) EP1537466A2 (en)
KR (1) KR101015319B1 (en)
CN (1) CN100587649C (en)
TW (1) TWI290286B (en)
WO (1) WO2004023275A2 (en)

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Also Published As

Publication number Publication date
US20040093523A1 (en) 2004-05-13
WO2004023275A2 (en) 2004-03-18
EP1537466A2 (en) 2005-06-08
TWI290286B (en) 2007-11-21
TW200405163A (en) 2004-04-01
CN1682174A (en) 2005-10-12
CN100587649C (en) 2010-02-03
KR20050034742A (en) 2005-04-14
EP2116915A1 (en) 2009-11-11
US20080275991A1 (en) 2008-11-06
US8386606B2 (en) 2013-02-26
KR101015319B1 (en) 2011-02-16
US7441117B2 (en) 2008-10-21

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