Chaotic system based message encryption system for wired and wireless networks broadly used in computer engineering, communication and network security, such as robotic systems, encryption, synchronization and genetic network. The main motive for developing the chaos based cryptosystem is to attain encryption with several compensation over the conventional encryption algorithms such as high security, speed, complexity, cost and quality assurance. These challenges encourage the researchers to develop novel chaos based data encryption techniques with digital logics dealing with encryption of messages for fast and secure communication networks. This effort provides a modified version of traditional data encryption algorithms to provide good quality and performance in a secure communication network environment. A cryptology technique is widely used in network security during communication. An avalanche effect is the attractive property of cryptography in which two different keys produce different cipher text for the same data information and also some Important properties related to chaotic systems are sensitivity to initial condition and nonlinearity, which makes two similar or slightly different keys to generate completely different cipher text to produce confusion. It has been proposed a novel fast & secure encryption Technique which uses the chaotic map function to generate the different multiple keys and shows that negligible difference in parameters of chaotic function generate completely different keys as well as cipher text. Cryptanalysis of the proposed algorithm shows the strength and security of algorithm and keys.