A New Image Encryption Method Combining the DNA Coding and 4D Chaotic Maps

With the tremendous technological progress in many fields, especially in communications, and to protect the information transmitted through communication channels, especially digital images, researchers in this field try to find new methods that provide a high level of security.Combining chaotic maps and DNA encryption provides a high level of security because of their high randomness, complexity, and sensitivity to initial conditions.This study presents a novel technique for protecting images by encrypting their data at three levels.The first level involves redistributing the image points.In contrast, the second level combines a 1D chaotic map (PWLCM) and DNA sequences.In the third level, three keys are produced using three 1D chaotic maps (Logistic maps, Tent maps, and Sine maps).Each key encrypts data of a specific color.The results of the statistical tests showed that the suggested technique provides a good security level compared to the methods, achieving an average Number of Pixels Change Rate (NPCR) of 99.62, a Unified Average Changing Intensity (UACI) of 32.83, and an entropy of 7.9972.