(19)
(11) EP 1 161 812 A1

(12)

(43) Date of publication:
12.12.2001 Bulletin 2001/50

(21) Application number: 00914874.3

(22) Date of filing: 10.03.2000
(51) International Patent Classification (IPC)7H04L 9/14, H04L 9/20, H04L 9/30
(86) International application number:
PCT/US0006/110
(87) International publication number:
WO 0054/455 (14.09.2000 Gazette 2000/37)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 11.03.1999 US 124086 P

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

(72) Inventor:
  • SCHEIDT, Edward, M.
    McLean, VA 22101 (US)

(74) Representative: Betten & Resch 
PatentanwälteTheatinerstrasse 8
80333 München
80333 München (DE)

   


(54) VOICE AND DATA ENCRYPTION METHOD USING A CRYPTOGRAPHIC KEY SPLIT COMBINER