Symmetric Encryption Algorithm Inspired by Randomness and Non-Linearity of Immune Systems

Encryption Algorithm

Traditionally, cryptography is a study of the means of converting information from its normal, comprehensible form into an incomprehensible format, rendering it unreadable without secret code. Historically, cryptography helped ensure secrecy in important communications, such as those of spies, military leaders and diplomats. In simple terms, cryptography is the science concerned with the study of secret communication. With the invention of computers and the internet, the need for this encryption algorithm is now universal in the world of information security. The field of cryptography (Schneier, 1995) can be divided into two techniques of study, which are asymmetric key algorithm and symmetric key algorithm. A symmetric key algorithm, or sometimes called public key algorithm, is usually based on complex mathematical problems. Symmetric key algorithm can be broadly grouped into block ciphers and stream ciphers. Other symmetric key algorithms are cryptographic hash functions and message authentication codes (MACs).