Network security and Cryptography

Abstract

With the arrival of web and ecommerce applications and social networks across the world generate huge amount of data. Network Security is the most extreme issue to guarantee safe transmission of data through the web. As large amount of user connect to internet it is attracted by huge number of cyber-attacks. Cryptography is the method of using mathematical algorithms to encrypt and decrypt the information. Store data or transfer it across unconfident networks so that it cannot be view by anyone except the conscious recipient. While cryptography is the technique of protecting data, cryptanalysis is the science of surveying and breaking secure conversation. It is basically used to convert the plain text into cipher text .In this paper we provide an overview on Network Security and Cryptography.