Color Image Encryption Algorithm Based on Chaos System and Dynamic DNA Encoding
In order to improve the security of images during transmission and provide users with a better experience,the Chen hy-perchaos system and DNA encoding are introduced into the field of image encryption;Color digital images are divided into three two-dimensional matrices based on the red,green,and blue channels,and the DNA region encoding is performed on the three two-dimen-sional matrices to increase the diversity of encoding operations and make the encryption process more secure;The sequence generated by the Chen hyperchaotic system determines the DNA encoding,decoding,and operation rules of each two-dimensional matrix.It is encrypted according to the corresponding rules,and then the segmented Logistic generates the corresponding sequence for row and column permutation,the segmented Logistic chaotic mapping can make the system to enter the chaotic state faster;The three two-di-mensional matrices of red,green,and blue channels are merged to generate a three-dimensional matrix,and ultimately obtain the cor-responding color encrypted image.The corresponding color images are selected to simulate the simulation experiments,and the final simulation results show that the proposed algorithm has good encryption performance and related performance indicators,which has a high security and robustness.