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(11)

EP 2 686 985 A1

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(43) Date of publication: 22.01.2014 Bulletin 2014/04 (21) Application number: 11708825.2 (22) Date of filing: 14.03.2011

(51) International Patent Classification (IPC):  H04L 12/28(2006.01) (86) International application number: PCT/EP2011/053813 (87) International publication number: WO 2012/123017 (20.09.2012 Gazette 2012/38)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (71) Applicant: Irdeto B.V. 2132 LS Hoofddorp (NL)	(72) Inventors: WAJS, Andrew Augustine NL-2132 LS Hoofddorp (NL) CIORDAS, Calin NL-2132 LS Hoofddorp (NL) DOUMEN, Jeroen Mathias NL-2132 LS Hoofddorp (NL) (74) Representative: Boult Wade Tennant  Verulam Gardens 70 Gray's Inn Road London WC1X 8BT London WC1X 8BT (GB)