Implementing a reliable cryptography based security tool for communication networks

Communication or computer networks are undergoing a fast development in various fields of applications like Information technology, business, e-commerce, medical applications etc. Even more, wireless sensor networks targets the applications like temperature sensing, destruction estimation, military and many others where human support is required only at remote console. Whatever is the communication scenario, wired locally or wireless geographically, or sensor nodes at remote location, it involves the source, receiver and a channel. Therefore, the channel is vulnerable for attack by an imposter which could challenge the authenticity and confidentiality of the communication data. In this paper, we constructed a reliable cryptography tool model by utilizing the properties of RSA algorithm in the Matlab programming environment. This tool can be efficiently used for communication networks for creating an authentic layer for secure data transfer. We take ATM Banking transaction as an illustrative communication network between ATM machine client and Banking server and implementing the tool usage that utilizes public cryptography, RSA algorithm encryption and decryption method.