Duffing map

Abstract: This paper presents a private key data encryption algorithm based on three dimensional chaotic map It is based on confusion and diffusion of speech samples using secret keys generated by logistic & two dimensional Duffing map Chaotic systems can generate pseudo random numbers (PRN) of highly complex dynamical properties Three dimensional chaotic functions are proofed with sound randomness and unpredictability In this method, the speech scrambles are compressed by DCT to reduce residual intelligibility In this techniques Speech samples are initially masked by key stream generated by logistic function After first level encryption speech scrambles undergoes permutation process by Duffing map Simulations results are presented in the paper shows that the encryption algorithm provides encryption speech samples of low residual intelligibility, key sensitivity and high quality recovered signal Total key space for the proposed encryption algorithm is (2∧192), which is large enough to protect the information from brute force attack The proposed method is computationally less complex since it uses lower dimensional chaotic maps

Abstract: It was known to us from decades it is been a factual challenge for us to transfer the privileged data specially images to transfer over a unsecured channel. In this paper we propose a novel image encryption technique using DNA interwearing based Hybridization along with chaotic maps to transfer image data over a unsecured channel. In the early stages we apply Duffing map(chaotic map) on the original image, the resultant image we obtain will be the scrambled original image, where pixel position will be scattered over the image plain. And in the next phase we apply the technique of modified DNA hybridization based on the interwearing on the resultant image. Finally encrypted using a modified hill cipher.By doing so we attain chaotic behavior(Butterfly effect with small change in initial condition leads to big change in resultant outcome) by using Duffing map and we achieve highely security with less processing by using DNA Hybridization based image encryption. The security analysis of proposed techniques has achieved satisfactory outcome and results were presented.

Abstract: Currently no one can deny the importance of data protection, especially with the proliferation of hackers and theft of personal information in all parts of the world .for these reasons the encryption has become one of the important fields in the protection of digital information. This paper adopts a new image encryption method to overcome the obstacles to previous image encryption methods, where our method will be used Duffing map to shuffled all image pixels ,after that the resulting image will be divided into a group of blocks for perform the shuffling process via Cross Chaotic Map. Finally, an image called key image was created by using Quadratic number spirals which will be used to generate numbers of polynomial equations via Lagrange interpolation to perform pixel diffusion.Simulations have been accomplished in order to evaluate the effectiveness of suggested technique, the Experimental results demonstrate that the proposed method can supply sufficient security for the confidentiality of images.