SECURE CLIENT-SERVER COMPUTER SYSTEM FOR INTERACTIVE APPLICATIONS

摘要

The general field of the invention is that of computer systems of client-server type for graphic applications, that is to say for displaying data in the form of software units called "widgets" on display screens called " Display Unit ", said system controlling the operation of a machine, the machine comprising at least one human-machine interface for interacting with the widgets, said system managing data or critical functions. The computer system according to the invention comprises a security engine that controls the integrity of the display of the critical widgets, the commands sent by means of the human-machine interface, the input and the display of the critical data. The main provisions of this security engine are the use of computer "signatures", the setting up of "feedback" circuits and the use of guard mechanisms or dedicated confirmation dialog boxes. Preferably, the machine is an aircraft, the computer system is the aircraft avionics of said aircraft and the display screens are the cockpit display systems.