Journal
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
Volume 19, Issue 11, Pages 3833-3839Publisher
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S021812740902516X
Keywords
Hyperchaos; cryptography; image encryption; image decryption; VLSI
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Chaos based encryption may offer new quality in secure data transmission. A recently proposed Chaotic-Key Based Algorithm (CKBA) has been shown to be unavoidably susceptible to chosen/known-plaintext attacks and ciphertext-only attacks. In this paper, Hyper Chaotic-Key Based Algorithm (HCKBA) using hyper chaos is proposed to enhance the security of CKBA. The enhanced security of the proposed algorithm is analyzed through cryptanalysis. Further, VLSI architecture of the proposed algorithm is designed. The VLSI architecture is implemented on an image using XILINX's ModelSim to demonstrate the effectiveness of the proposed scheme.
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