Secure computer network using trusted path subsystem which encry

Details Secure computer network using trusted path subsystem which encry Secure computer network using trusted path subsystem which encry

1992-07-10

1997-01-21

Ellis, Richard L.

Cryptography

Key management

Having particular key generator

380 25, 380 49, G06F 1517

Patent

active

055967183

ABSTRACT:
A method and apparatus for ensuring secure communication over an unsecured communications medium between a user working on an unsecured workstation or computer and a host computer. A secure user interface is created by inserting a trusted path subsystem between input/output devices to the workstation and the workstation itself. Data transferred from the input/output devices is intercepted, encrypted and transmitted in packets to the host computer. Packets of screen display data from the host computer are decrypted and presented within a user-defined screen overlay.

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