The proposed hybrid message embedded scheme consists of hill cipher combined with message embedded chaotic scheme. Message-embedded scheme using non-linear feedback shift register as non-linear function and 1-D logistic map as chaotic map is modified, analyzed and tested for avalanche property and strength against known plaintext attack and brute-force attack. Parameter of logistic map acts as ...

The focus of this paper is to improve the level of security and secrecy provided by the chaotic map based image encryption.An encryption algorithm based on the Logistic and the Henon maps is proposed. The algorithm uses chaotic iteration to generate the encryption keys, and then carries out the XOR and cyclic shift operations on the plain text to change the values of image pixels. Chaotic Map L...

A procedure to characterize chaotic dynamical systems with concepts of complex networks is pursued, in which a dynamical system is mapped onto a network. The nodes represent the regions of space visited by the system, while edges represent the transitions between these regions. Parameters used to quantify the properties of complex networks, including those related to higher order neighborhoods,...

With the fast progression of data exchange in electronic way, information security is becoming more important in data storage and transmission. This paper proposed a new algorithm for color image encryption using chaotic map and spatial bit-level permutation (SBLP).Firstly, use Logistic chaotic sequence to shuffle the positions of image pixels, then transform it into a binary matrix including t...

Dynamic analysis of the coupled logistic map redounds to know and predict the characteristics of high-dimension complex nonlinear system. Using the method combining calculation and experiment, the following conclusions are shown: (1) The boundary equation of the first bifurcation of the coupled logistic map in the parameter space is given out. (2) Chaotic patterns of the coupled logistic map ma...

In this paper we present a brief summary of the Symmetric Level Index, SLI, system of number representation and computer arithmetic with only enough detail to allow the reader to understand the remaining discussion. This discussion is focused on an elementary example of chaos, the logistic map or shift map. This map, which was discussed by Ulam and von Neumann in the context of random number ge...

Numerical experiments reveal that estimates of the Lyapunov exponent for the logistic map x t+1 = f(x t) = 4x t (1 ? x t) are anomalously precise: they are distributed with a standard deviation that scales as 1=N, where N is the length of the trajectory, not as 1= p N, the scaling expected from an informal interpretation of the central limit theorem. We show that this anomalous convergence foll...