Implementation of Encryption Techniques in Secure Communication Model

Wireless communication evolves the modern generation where communication has been possible to limit the distance without any physical connection between two parties. Basically, communication can be of two types namely wired and wireless where the second is preferred mostly than first. But we need a secure wireless communication in case of industries, companies, e-commerce and communication technologies, etc. In this research, we can transmit encrypted data wirelessly through the channel to provide data security using different encryption techniques. To do this we propose a model which comprises two parts namely transmitter and receiver. In the transmitter portion, the plaintext is encrypted and then after modulation, it is sent through the channel. The receiver at first receives the channel output and then demodulates and finally decrypts the encrypted data to get the original plaintext which is sent from the sender to the receiver. Here, we have considered two encryption techniques, i.e., Caesar and RSA, and compared them with no encryption in our proposed model. We implement our model using the MATLAB programming language. The overall investigation shows that the RSA algorithm deserves better performance than Caesar and no encryption techniques because RSA shows lower bit errors with signal-to-noise ratio compared to no encryption and Caesar cipher.