Trusted path subsystem for workstations
September 18, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesData security module Line monitoring device in two-way data communication system Bypass apparatus for use in secure communication systems Gateway system and method for interconnecting telephone calls with a digital voice protected radio network Intelligent synchronous modem and communication system incorporating the same Intelligent synchronous modem and communication system incorporating the same Integrated I/O interface for communication terminal Secure communication control system Data encripting transfer Secret communication control apparatus InventorsAssigneeApplicationNo. 714319 filed on 09/18/1996US Classes:713/192, Having separate add-on board713/150, MULTIPLE COMPUTER COMMUNICATION USING CRYPTOGRAPHY713/152Application layer securityExaminersPrimary: Tarcza, Thomas H.Assistant: Sayadian, Hrayr A. Attorney, Agent or FirmInternational ClassH04L 009/00AbstractA 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. | |
