Color Image Encryption Using Novel Blackjack Based Scrambling Scheme

This paper proposes a novel color image encryption method which uses Henon map for generating pseudo random numbers from original pixel values. Furthermore, these values are shuffled and confused using blackjack based scrambling scheme using logistic map. In this scheme threshold values are first generated for each pixel and then using parameters like threshold value, direction variable and destination position, pixels are scrambled. Security analysis of the encryption scheme is done, governing very high key space, very high key sensitivity, and the ability to sustain statistical and differential attacks. Also, we have achieved 100 percent accuracy in decryption. Thus, proposed algorithm can be used by any application for securely transmitting digital media over a network such as in military applications, satellites, and video conferencing.