Image encryption method based on finite time synchronization of fractional order driven response system

The invention provides an image encryption method based on finite time synchronization of a fractional order driving response system. The method comprises the steps of reading a three-dimensional color image to obtain a color component matrix; obtaining chaos signals based on a fractional order driving system, and carrying out resampling to obtain a discrete chaos sequence; arranging and recombining the discrete chaotic sequence according to a column mode to obtain a two-dimensional array, and normalizing the two-dimensional array to obtain a pseudo-random matrix; performing binary XOR operation on the color component matrix by using a pseudo-random matrix to obtain a color component matrix encrypted for the first time; performing scrambling operation on the color component matrix encrypted for the first time and a pseudo-random matrix to obtain a color component matrix encrypted for the second time; and performing equal-area mapping scrambling on the color component matrix encrypted for the second time to ob