(19)

(11)

EP 2 494 787 A1

(12)

(43) Date of publication: 05.09.2012 Bulletin 2012/36 (21) Application number: 10827245.1 (22) Date of filing: 29.10.2010

(51) International Patent Classification (IPC):  H04N 21/418(2011.01) H04L 29/06(2006.01) (86) International application number: PCT/SE2010/051176 (87) International publication number: WO 2011/053238 (05.05.2011 Gazette 2011/18)

(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 (30) Priority: 29.10.2009 SE 0950806 (71) Applicant: Cryptoguard AB 962 31 Jokkmokk (SE)	(72) Inventor: GÖRANSSON, Per S-954 42 S.Sunderbyn (SE) (74) Representative: Hervius Löthman, Johan et al Albihns Zacco AB Valhallavägen 117 N P.O. Box 5581 SE-114 85 Stockholm SE-114 85 Stockholm (SE)