METHOD AND SYSTEM FOR MONITORING DATA INTEGRITY Russian patent published in 2021 - IPC G06F21/31 

FIELD: information technology.

SUBSTANCE: invention relates to protection of information from unauthorized access. Disclosed solution relates to a method of monitoring the integrity of data on the state of the automatic control system of a gas turbine engine, transmitted from aircraft to the manufacturer, for implementation of which process time series are compared, which characterize behavior of parameters of automatic control system of gas turbine engine installed on aircraft, and the gas turbine engine automatic control system model, installed in the manufacturing enterprise, calculating a determination coefficient, an average percentage of deviation and Euclidean distance, determining to which of the formed seven types of consistency the given vector relates, determining, in which of two operating modes is a system for automatic control of a gas turbine engine: transient or steady-state, and in accordance with the generated fuzzy logic rules, based on the control system signal, operating mode and consistency parameters, a decision is made on presence of attack of intruder on received data, their integrity and estimating probability with which this decision is made.

EFFECT: disclosed solution is aimed at increasing the level of protection of information from unauthorized modification.

2 cl, 13 dwg, 10 tbl