EP 1949294 A2 20080730 - METHOD AND SYSTEM FOR MANAGING KEYS AND/OR RIGHTS OBJECTS
Title (en)
METHOD AND SYSTEM FOR MANAGING KEYS AND/OR RIGHTS OBJECTS
Title (de)
VERFAHREN UND SYSTEM ZUR VERWALTUNG VON SCHLÜSSELN UND/ODER RECHTEOBJEKTEN
Title (fr)
PROCÉDÉ ET SYSTÈME DE GESTION DE CLÉS ET/OU D'OBJETS DE DROITS
Publication
Application
Priority
- US 2006060928 W 20061115
- US 28322505 A 20051118
- US 28322105 A 20051118
Abstract (en)
[origin: WO2007094874A2] 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.
IPC 8 full level
G06F 21/10 (2013.01); G06F 21/78 (2013.01)
CPC (source: EP KR US)
G06F 21/00 (2013.01 - KR); G06F 21/10 (2013.01 - EP US); G06F 21/78 (2013.01 - EP)
Citation (search report)
See references of WO 2007094874A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2007094874 A2 20070823; WO 2007094874 A3 20071206; EP 1949294 A2 20080730; JP 2009516961 A 20090423; KR 20080068757 A 20080723; TW 200736954 A 20071001
DOCDB simple family (application)
US 2006060928 W 20061115; EP 06850155 A 20061115; JP 2008541468 A 20061115; KR 20087014728 A 20080618; TW 95142629 A 20061117