| 摘要 |
PURPOSE:To provide the structure and the mechanism which protect information on an electronic computer from leakage, destruction, or the like by detecting invasion, infection, latency, and crisis of a wrong program in the electronic computer. CONSTITUTION:A normal program 1 and a wrong program 2 are compared with each other to obtain the difference for infection with the wrong program. Based on the difference of the wrong program calculated by this method, a program 3 which is suspected to be infected with the wrong program is compared to check whether it is infected with the wrong program or not. If it is infected, it is repaired to the original normal program by the inverse method of infection. Thus, the electronic computer, the computer system, and the whole an information network are protected from the operation of the wrong program. The computer system is protected to prevent the destruction of a storage memory or the like and the malfunction. |
