(19)
(11) EP 1 259 865 A2

(12)

(88) Date of publication A3:
12.09.2002

(43) Date of publication:
27.11.2002 Bulletin 2002/48

(21) Application number: 00992916.7

(22) Date of filing: 13.12.2000
(51) International Patent Classification (IPC)7: G06F 1/00
(86) International application number:
PCT/US0042/780
(87) International publication number:
WO 0104/6782 (28.06.2001 Gazette 2001/26)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 16.12.1999 US 464724

(71) Applicant: MICROSOFT CORPORATION
Redmond, WA 98052 (US)

(72) Inventor:
  • ABBURI, Rajasekhar
    Medina, WA 98039 (US)

(74) Representative: Pfau, Anton Konrad, Dr. 
Grünecker, Kinkeldey,Stockmair & SchwannhäusserAnwaltssozietätMaximilianstrasse 58
80538 München
80538 München (DE)

   


(54) METHOD OF PRE-RELEASING ENCRYPTED DIGITAL DATA