In this paper, a new method was proposed for image encryption using chaotic signals and complete binary tree. In this method, perfect binary tree was utilized for further complexity of the encryption algorithm, higher security and changing the amount of gray scale of each pixel of the original image. Studying the obtained results of the performed experiments, high resistance of the proposed method against brute-force and statistical invasions was obviously illustrated. Also, the obtained entropy of the method which is about 7.9931 is very close to the ideal amount of 8.
Key words: Chaotic signal, image encryption, complete binary tree.
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