A Fast Encryption Scheme Based on Chaotic Maps

Abstract

&nbsp;In this paper, a fast encryption scheme based on chaotic maps is proposed. Firstly the dynamical 8&times;8 S-box is produced by using logistic map and 2D standard map.&nbsp; Secondly a sequence of pseudo-random bytes is generated by using 2D chaotic cat map to index the entries of the S-box.&nbsp; The output bytes from the S-box are XOR-ed with the plaintext to produce the ciphertext.&nbsp; The results of simulations show that this encryption scheme is secure and fast enough to be used in real-time image encryption applications.</p