Network Security with Cryptography

Abstract

In the present tech-savvy world, the growth in computer systems and their interconnections through networks has increased. With this the dependence of both organizations and the individuals on the information stored and communicated using these systems has also increased. This, in turn, has led to the reinforcement in security attacks and electronic frauds. Hence, there is indeed no time at which security does not matter and to protect systems from network based attacks. Network security refers to all hardware and software functions, characteristics, features, operational procedures, accountability, measures, access control and administrative and management policy required to provide an acceptable level of protection for hardware and software and information in a network. Cryptography is a technique that is used to enhance the network security. It protects users by providing functionality for the encryption of data and authentication of other users. There are many cryptographic techniques available and among them Advanced Encryption Standards (AES) is one of the most powerful techniques. In this paper a study on cryptography and its dimensions is done. Cryptographic systems with ciphers are described. The cryptographic models and algorithms are outlined.