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Virtual smart card system and method

  • US 7,487,357 B2
  • Filed: 06/21/2006
  • Issued: 02/03/2009
  • Est. Priority Date: 09/03/1999
  • Status: Expired due to Fees
First Claim
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1. A public key authentication system for use in a computer system having a plurality of users, the system comprising:

  • an authentication server;

    a directory service connected to the authentication server, wherein the directory service includes a plurality of public keys, wherein each public key is associated with a unique user identifier; and

    a host system, wherein the host system includes a public key authentication client and an interface to a smart-card-enabled application, wherein the public key authentication client is connected to the authentication server;

    wherein the public key authentication client receives a challenge issued by the authentication server in response to a user request by the host system, signs the challenge with a digital signature representing a user and sends the digital signature of the challenge back to the authentication server; and

    wherein the authentication server receives the digital signature of the challenge and verifies the digital signature with the user'"'"'s public key retrieved from the directory service.

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