Trusted path subsystem for workstations United States Patent 05822435

05822435 is referenced by 72 patents and cites 20 patents.

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.

Title
Trusted path subsystem for workstations
Application Number
911900
Publication Number
5822435
Application Date
September 18, 1996
Publication Date
October 13, 1998
Inventor
Thomas R Markham
Anoka
MN, US
Mark H Hanson
Eagan
MN, US
William E Boebert
Minnapolis
MN, US
Agent
Schwegman Lundberg Woessner and Kluth P A
Assignee
Secure Computing Corporation
MN, US
IPC
H04L 9/00
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Citations: 72 (view full list)

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  3. Scott E Fahlman, Rahul Sukthankar, Antoine Brusseau: Method for transforming message containing sensitive information. Justsystem Pittsburgh Research Center, Webb Ziesenheim Logsdon Orkin & Hanson P C, September 28, 1999: US05960080 (106 worldwide citation)
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  5. Patrick James Helland, Rodney Limprecht, Mohsen Al Ghosein: Disabling and enabling transaction committal in transactional application components. Microsoft Corporation, Klarquist Sparkman Campbell Leigh & Whinston, October 9, 2001: US06301601 (77 worldwide citation)
  6. Graeme John Proudler, Boris Balacheff, Liqun Chen, David Chan: System for providing a trustworthy user interface. Hewlett Packard Development Company, Ladas & Parry, November 27, 2007: US07302585 (61 worldwide citation)
  7. Vasanth Bala, Michael D Smith: Method for protecting digital content from unauthorized use by automatically and dynamically integrating a content-protection agent. Liquid Machines, Hamilton Brook Smith & Reynolds PC, December 25, 2007: US07313824 (59 worldwide citation)
  8. Timothy C Williams: Multi-level security network system. Cryptek, Jacobson Holman PLLC, June 27, 2006: US07069437 (51 worldwide citation)
  9. Benjamin J Parker, Shane W Werner, Charles Diaz, Terry M Frederick: Network security services architecture. Sprint Communications Company, January 1, 2008: US07316029 (45 worldwide citation)
  10. Graeme John Proudler, David Chan: Communications between modules of a computing apparatus. Hewlett Packard Development Company, June 26, 2007: US07236455 (36 worldwide citation)

References: 20 (view full list)

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