An encryption based on DNA and AES algorithms for hiding a compressed text in colored Image

Abstract

Abstract The vast serious security challenges has created new secured ways of transmitting information and reduce the chance of hackers to use their methods to analyse the confidential information between two parties. The research combines between several stages of encryption techniques: DNA encryption algorithm, GZIP algorithm, AES cryptography and image steganography. We proposed multiplying by a factor along the last stage of DNA encryption, and the outputs of this process are compressed using the GZIP algorithm, where the message is converted to a new form and its size reduced to (75%), then after the message is encrypted using the AES encryption algorithm to increase the level of security. Furthermore, LSB image Steganography technology is utilized to hide the encrypted message in a high-quality image. By combining these four security technologies we obtained good results for image measures such that Lina sample provided (PSNR is equal 67.589, MSE is equal 0.0116, SSIM is equal 1, NPCR score is 0.011630262741374 and UACI score is 4.5608873495583733e-05) and we ensure transferring data without gaps & make it difficult and more complex for the hacker.