Citrix Systems, Inc.
Secure sign-on using personal authentication tag

Abstract:

A technique for providing access to protected resources uses personal authentication tags (PATs) and enforces a requirement that a workstation sending an authentication request be trusted by a server that receives the request. Accordingly, the server allows an authentication request to proceed only when the request is received from a workstation having a trust relationship with the server. Otherwise, the server denies the authentication request. By restricting PAT-type authentication requests to trusted workstations, risks posed by malicious users are greatly reduced.