Efficient Key Designing for Secured Communication

An increasing amount of information is being transmitted over the Internet, including not only text but also image and other multimedia files. Therefore a number of data encryption techniques have come up in recent years for different information transfer systems. For this, encryption is performed when it is necessary to protect user privacy and latest chaos-based encryption technique is used for high secure image communication. I have used chaos-based encryption and the scheme is selective encryption. The basic principle of encryption with chaos is based on the ability of some dynamic systems to produce sequence of numbers that are random in nature. For decryption, the sequence of random numbers is highly dependent on the initial condition used for generating this sequence. A very minute deviation in the initial condition will result in a totally different sequence. This sensitivity to initial condition makes chaotic systems ideal for encryption. In this work, I present an approach for encrypting images, my approach is based on chaotic maps, where I suggest to use the random chaotic equation for image decryption.