An Enhanced Image Encryption Approach using Four Dimension Hyperchaotic Chen map

摘要

Digital images needs to be protected and transformed image should be highly unpredictable to the intruder. The transformed image should be immune to all possible cyber attacks and it is very important to encrypt and decrypt with less computational time. To transmit the data in a secured manner with less computational time, an image encryption scheme using four dimension (4D) hyper chaotic chen system is proposed. To enhance security, the diffusion and confusion method is used in the proposed algorithm. In our proposed algorithm, to break the strong correlation with neighboring pixel spiral shuffling and masking pixel values to avoid image leakage achieved using chaotic map. The result analysis such as image histogram, information entropy, correlation, NPCR and UACI analysis assured better performance.