Publication

Abstract : Communications security has become an integral part of wireless networks. A commonly known method to attain secrecy of information is done by addition of noise to corrupt the intruder's channel. In this paper, we undertake the principle of multiple inter-symbol obfuscation (MIO) method to improve security in wireless based communication in the last level of the OSI (Open System Interconnect) model, i.e. the physical layer. On encryption using the concept of MIO, an arbitrary subgroup of the respective symbols are put into data packets that are obscured with a group of artificially included noise symbols, commonly known as the symbols key. This tends to corrupt the third party's quality of the channel and make it worse than the genuine receiver. Hence he cannot unravel the information correctly without knowledge of the symbols key used in encryption. A self-updating process for the key is designed for automatic update of the key to enhance the encryption process. With the help of a dynamic key update process the legitimate receiver is able to encrypt the given information from the transmitter and protect it from the intruders who try to extract the message. Hence this method can deliver secrecy against passive eavesdropping and computational discretion against the fake packet injection attacks. This paper has been implemented using tools such as MATLAB and simulations have been carried out to determine the efficacy of MIO in wireless communication. © 2017 IEEE.