05499297 is referenced by 125 patents and cites 19 patents.

A system and method for identifying and authenticating users and for controlling the access of those users to privileged instructions within a data enclave. The data enclave includes a plurality of controllers, such as workstations, connected over a network to a security server; each data enclave is assigned a cryptographic key. A personal keying device having an encrypted user unique identifier is assigned to each user; provisions are made for temporarily connecting the personal keying device to one of the controllers and for transmitting an encrypted message, including the user unique identifier and the last countersign, to the security server to authenticate the user and establish his/her access rights. A mechanism for updating the countersign is provided so that trusted path communications can be established between the user and the security server.

Title
System and method for trusted path communications
Application Number
870556
Publication Number
5499297
Application Date
December 20, 1994
Publication Date
March 12, 1996
Inventor
William E Boebert
Minneapolis
MN, US
Agent
Schwegman Lundberg & Woessner
Assignee
Secure Computing Corporation
MN, US
IPC
H04K 1/00
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