A study of data security using cryptography

Abstract

To make better data transmission over networks cryptography is used with the internet having reached a level that merges with our lives, growing explosively during the last several decades; data security has become a main concern for anyone connected to the web. Data security ensures that our data is only accessible by the intended receiver and prevents any modification or alteration of data. In order to achieve this level of security, various algorithms and methods have been developed. Cryptography can be defined as techniques that cipher data, depending on specific algorithms that make the data unreadable to the human eye unless decrypted by algorithms that are predefined by the sender.