Secure computer network using trusted path subsystem which encrypts/decrypts and communicates with user through local workstation user I/O devices without utilizing workstation processor
US5596718A · kind A · utility
146Cited by
28References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1992 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Jul 10, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2153
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.