×

Authentication system

  • US 5,761,309 A
  • Filed: 04/26/1996
  • Issued: 06/02/1998
  • Est. Priority Date: 08/30/1994
  • Status: Expired due to Fees
First Claim
Patent Images

1. An authentication system adopting an authentication scheme for verifying a user from a network, by sharing the same secret key between the user and the network, encrypting a known information using said secret key at the user to produce first encrypted information, transmitting the first encrypted information from the user to the network, encrypting the known information using said secret key at the network to produce second encrypted information, and collating the transmitted first encrypted information with the produced second encrypted information at the network,said system comprising a single master authentication center arranged in the network, said master authentication center sharing with the user a user secret key, and a plurality of slave authentication centers sharing with said master authentication center respective secret keys different from the user secret key,said master authentication center authenticating the user by using said user secret key and issuing a certificate information to the user if the user is authenticated as a legitimate user, said certificate information certifying legitmation of the user, said slave authentication center authenticating the certificate information from the user and issuing a permission information which allows an access to a specified server or an application server in the network, to the user if the user is authenticated as a legitimate user,wherein said user has an IC card provided with a CPU, and wherein the IC card executes management of said user secret key and encryption and decryption of the information.

View all claims
  • 4 Assignments
Timeline View
Assignment View
    ×
    ×