Image transfer with secure communications application using a new reversible chaotic image encryption.

In this study, encrypted image transmission was carried out with a secure communication application using reversible chaotic image encryption with the synchronization of two identical chaotic systems. Encryption and decryption of the image can be done with the same algorithm using the same chaotic signal. The image can be encrypted using the same chaotic signal on the sending side and decoded with the encryption algorithm and chaotic signal on the receiving side. Experimental results show that the proposed encryption algorithm can securely encrypt and transfer images in 24-bit RGB and 8-bit grayscale images. In the study, histogram, histogram variance, salt & pepper, speckle, NPCR and UACI, four classical types of attacks, NIST, key sensitive and crop visual and statistical attacks were made on encrypted images and the robustness of the encryption method was tested. In addition, PSNR, SSIM, UIQ, BER and NCC image quality criteria were used and the results of attacks on chaotic encrypted images were measured. As a result of visual and statistical attacks, it has been seen that the proposed chaotic encryption algorithm is resistant to attacks. The NPCR and UACI analysis results of the proposed method were compared with the results of similar studies in the literature. According to similar chaotic image coding studies in the literature, the NPCR and UACI values of the proposed method gave better results than most. As a result of the tests, with the secure communication application of the proposed method, image encryption and decryption can be performed by using a common chaotic signal on the sender and receiver sides. [ABSTRACT FROM AUTHOR]