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(11)

EP 1 618 700 A2

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(88) Date of publication A3: 03.03.2005 (43) Date of publication: 25.01.2006 Bulletin 2006/04 (21) Application number: 04750211.7 (22) Date of filing: 16.04.2004

(51) International Patent Classification (IPC):  H04L 9/08(1990.01) (86) International application number: PCT/US2004/011756 (87) International publication number: WO 2004/095754 (04.11.2004 Gazette 2004/45)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR Designated Extension States: AL HR LT LV MK (30) Priority: 17.04.2003 US 418312 (71) Applicant: Tecsec, Incorporated Vienna, VA 22182 (US)	(72) Inventors: SCHEIDT, Edward, M. Vienna, VA 22182 (US) WACK, C., Jay Vienna, VA 22182 (US) (74) Representative: Schramm, Michael et al Bettinger Schneider Schramm, Patent- und Rechtsanwälte, Postfach 86 02 67 81629 München 81629 München (DE)