A Mixed Chaotic-cellular Automata Based Encryption Scheme for Compressed Jpeg Images

Abstract

In this paper, we propose a new scheme for joint compression and encryption of digital images, based on cellular automata and selective encryption of quantized DCT coefficient. Using a key stream by a cellular automata mechanism, a subset of quantized coefficients is selected and then ciphered with the produced pseudorandom key-stream. Thus, we achieve a sufficiently robust security level, mostly against known plaintext attacks while preserving a high compression ratio. Several performance analysis including security analysis, speed performances and compression ratio are performed, and demonstrate the efficacy of the proposed approach with respect to existing ones.

Design of Cellular Automata based Linear Rules in Multilingual Encryption for Performance Optimization in Wireless Network

“…Parallel AES encryption framework has been developed using programmable cellular automata [21]. An encryption scheme has been proposed for compressing jpeg images based on mixed chaotic cellular automata [22]. Authors have implemented an advanced encryption standard algorithm [23].…”