Image Encryption Method Using Dependable Multiple Chaotic Logistic Functions

1. Introduction

With the fast development in the technology of computer network and advancement in the information technology, a huge amount of image-based data is sent through unsecured channels in the public network. The security and the confidentiality of the information becomes the prime aspect while transmitting the data. The nature of chaotic signals has attracted many cryptographers. Its behavior resembles with the cryptographic properties. The ergodicity property of chaotic signal is similar to the confusion property in cryptography. The random behavior which appears to be noise in chaotic sequence resembles with the key sequence that is used in cryptography. The sensitiveness of chaotic signal towards the initial condition resembles with the diffusion property in the cryptography. Since encryption plays a vital role while transmitting the information in the form of images, thus the purpose of this paper is to develop such a method which would secure the confidential information and would be simple to implement.