A robust hybrid cryptosystem based on DNA and Hyperchaotic for images encryption

Abstract

Most existent DeoxyriboNucleic Acid (DNA) based cryptosystems suffer from low processing capability and need submitting a long key. This article provides a robust cryptosystem which depends on both DNA and Hyperchaotic encryption techniques to solve the drawbacks of using DNA technique. The proposed algorithm uses a hyperchaotic system which hypers between 3D Hénon map and 1D Logistic to generate a greater key space than that generated by using either one. This system has high security and efficiency to produce secret keys for diffusion in the DNA encryption. After that data is encoded exploiting the hypothesis of traditional cryptography, DNA Digital coding, and the advancements of DNA synthesis. Test results prove that the proposed algorithm has large key space (up to 1084) which provides a high resistance against attack of exhaustion, strong sensitivity of encryption key, and good statistical characteristics. Compared to other existing techniques, the proposed algorithm is extremely secure against differential attack and Chosen/Known plaintext attack. Also, the execution time of the proposed cryptosystem is convenient for different applications.