Encryption has come as a welcome solution to securing data and communication in organizations and also for individuals. It has been accepted as the most trusted way of securing data against the threats that are in existence today. Cryptography, which is the practice of using encryption and decryption, is often one of the last security measures that organizations employ just in case hackers are able to breach through other layers of security. Encryption, which is the process of converting data from plain text to cipher text, is one of the elements used to add reliability and non-repudiation in communication.
This chapter will take us through the detailed version of encryption from its early methods and gives us a brief idea of how far it has evolved, covering various techniques along with the challenges. In brief, this...