Chaotic Maps Based Video Encryption: A New Approach

Abstract

This study proposes a new encryption method for safe video transmission. The approach introduced in this paper is based on MPEG-2 compression and several chaotic maps. The Arnold map is used to encrypt an explicit chosen frame, which is then XORed with the encrypted video frames produced by the Skew Tent map. This map achieves high performance and low time consuming. Furthermore, bit shifts of pixel values are utilized to produce a more uniform histogram for the encrypted video, improve the encryption scheme’s speed, and boost security. To reduce processing time before the encryption process begins, the row vector method is applied. According to the experimental results, the encrypted video exhibits low correlation coefficients between adjacent pixels, excellent entropy, a decent histogram, a low time consumption, and resistance to differential assaults, additive noise, and cropping attacks. The average correlation coefficients between pixels are obtained as -0.0133, -0.0155 and 0.0037 for horizontal, vertical and diagonal components for foreman frame. Moreover, the entropy for the encrypted foremen frame is 7.3348. Furthermore, the processing time 0.7015 s and 1.81 s, respectively, for encryption and decryption.