(19)
(11) EP 1 008 101 A2

(12)

(88) Date of publication A3:
23.07.1998

(43) Date of publication:
14.06.2000 Bulletin 2000/24

(21) Application number: 97953060.7

(22) Date of filing: 20.11.1997
(51) International Patent Classification (IPC)7G06K 19/06
(86) International application number:
PCT/US9721/809
(87) International publication number:
WO 9822/914 (28.05.1998 Gazette 1998/21)
(84) Designated Contracting States:
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
RO

(30) Priority: 20.11.1996 US 31283 P

(71) Applicant: Tecsec, Incorporated
Vienna, VA 22182 (US)

(72) Inventors:
  • WACK, Carl, J.
    Clarksburg, MD 20871 (US)
  • SCHEIDT, Edward, M.
    McLean, VA 22101 (US)
  • HERSHLOW, John, H.
    Berkeley Heights, NJ 07922 (US)

(74) Representative: Geissler, Bernhard, Dr.jur., Dipl.-Phys. 
Patent- u. Rechtsanwälte Bardehle-Pagenberg-Dost-Altenburg-Geissler-IsenbruckGalileiplatz 1
81679 München
81679 München (DE)

   


(54) CRYPTOGRAPHIC MEDIUM