(19)
(11) EP 1 264 463 A2

(12)

(88) Date of publication A3:
11.04.2002

(43) Date of publication:
11.12.2002 Bulletin 2002/50

(21) Application number: 01913338.8

(22) Date of filing: 07.03.2001
(51) International Patent Classification (IPC)7: H04L 29/06
(86) International application number:
PCT/US0107/282
(87) International publication number:
WO 0107/2009 (27.09.2001 Gazette 2001/39)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

(30) Priority: 17.03.2000 US 528189

(71) Applicant: AT & T Corp.
New York, NY 10013-2412 (US)

(72) Inventors:
  • BALABINE, Igor
    Cupertino, CA 95014 (US)
  • DUTTA, Partha, P.
    San Jose, CA 95129 (US)
  • KUMAR, Mahesh, M.
    Fremont, CA 94536 (US)
  • TSELOVALNIKOV, Alex
    San Jose, CA 95129 (US)

(74) Representative: Suckling, Andrew Michael 
Marks & Clerk4220 Nash CourtOxford Business Park South
Oxford OX4 2RU
Oxford OX4 2RU (GB)

   


(54) WEB-BASED SINGLE-SIGN-ON AUTHENTICATION MECHANISM