EP 1825470 A4 20090429 - METHOD AND APPARATUS FOR WRITING AND USING KEYS FOR ENCRYPTING/DECRYPTING A CONTENT AND A RECORDING MEDIUM STORING KEYS WRITTEN BY THE METHOD
Title (en)
METHOD AND APPARATUS FOR WRITING AND USING KEYS FOR ENCRYPTING/DECRYPTING A CONTENT AND A RECORDING MEDIUM STORING KEYS WRITTEN BY THE METHOD
Title (de)
VERFAHREN UND VORRICHTUNG ZUM SCHREIBEN UND BENUTZEN VON SCHLÜSSELN ZUM VERSCHLÜSSELN/ENTSCHLÜSSELN EINES INHALTS UND DURCH DAS VERFAHREN GESCHRIEBENE SCHLÜSSEL SPEICHERNDES AUFZEICHNUNGSMEDIUM
Title (fr)
PROCEDE ET DISPOSITIF POUR ECRIRE ET UTILISER DES CLES SERVANT A CHIFFRER/DECHIFFRER DU CONTENU, ET SUPPORT D'ENREGISTREMENT STOCKANT LES CLES ECRITES A L'AIDE DU PROCEDE
Publication
Application
Priority
- KR 2005004146 W 20051206
- US 63499804 P 20041213
- US 63833204 P 20041223
- KR 20050105754 A 20051105
Abstract (en)
[origin: WO2006065034A1] Content encryption information on content data recorded on a recording medium. A plurality of encryption keys is used for encrypting or decrypting a plurality of clip files containing content data in such a way that each of the plurality of encryption keys is used for encrypting or decrypting the whole or partial data of each of the plurality of clip files. The encrypting method in accordance with the present invention allows different titles to be encrypted with different encryption keys even in the case where some data segments are shared by multiple titles.
IPC 8 full level
G11B 20/10 (2006.01)
CPC (source: EP)
G11B 20/00086 (2013.01); G11B 20/0021 (2013.01); G11B 20/00253 (2013.01); G11B 20/00427 (2013.01); G11B 20/00528 (2013.01); G11B 27/105 (2013.01); G11B 27/28 (2013.01)
Citation (search report)
- [XY] WO 0115162 A2 20010301 - MICROSOFT CORP [US]
- [Y] JP 2004005868 A 20040108 - SONY CORP & EP 1492114 A1 20041229 - SONY CORP [JP]
- [Y] EP 1408686 A1 20040414 - SONY CORP [JP]
- [A] BLU-RAY DISC: "White paper Blu-ray disc format - 2.A logical and audio visual application format specifications for BD-RE", INTERNET CITATION, 1 August 2004 (2004-08-01), pages 1 - 26, XP007904846, Retrieved from the Internet <URL:http://www.blurayjukebox.com/html/blu-ray_whitepapers.html> [retrieved on 20080530]
- See references of WO 2006065034A1
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 2006065034 A1 20060622; EP 1825470 A1 20070829; EP 1825470 A4 20090429
DOCDB simple family (application)
KR 2005004146 W 20051206; EP 05823731 A 20051206