Chaotic Variations of AES Algorithm

ABSTRACT Advanced Encryption Standard (AES) algorithm is considered a

Newton Raphson method, scaling at fractal boundaries and mathematica

Consiglio Nazionale delle Ricerche (CNR). Biblioteca Centrale / CNR - Consiglio Nazionale delle RichercheSIGLEITItal

Robust Watermarking Technique using 2D Logistic Map and Elliptic Curve Cryptosystem in Wavelets

Abstract — Copyright protection is a vital issue in modern day’s data transmission over internet. For copyright protection, watermarking technique is extensively used. In this paper, we have proposed a robust watermarking scheme using 2D Logistic map and elliptic curve cryptosystem (ECC) in the DWT domain. The combined encryption has been taken to enhance the security of the watermark before the embedding phase. The PSNR value shows the difference between original cover and embedded cover is minimal. Similarly, NC values show the robustness and resistance capability of the proposed technique from the common attacks such as scaling, Gaussian noise etc. Thus, this combined version of 2D Logistic map and Elliptic curve cryptosystem can be used in case of higher security requirement of the watermark signal. Index Terms — watermarking, 2D logistic map, elliptic curve cryptosystem, wavelet, embedding, extraction. I