Revolutionary Change in Cryptography

From Ancient periods the secure communication is required for that cryptography is invented. Cryptography provides users the various types of functionalities for encrypting the data and authenticates the users who use the encrypted data. More formally, Cryptography is a science of protecting data. This study represents a timeline of the evolution of cryptography from early Egyptian cryptography to modern cryptography encryption technique. This study explains why encryption is needed why every world's leader used encryption and why we still needed it. The different techniques used during 1899 BCE and till now for the secure communication which is an important part of the digital world. This Study will let know what different types of cryptography techniques used in the different period of times. Also, this study will help peoples to know in details about the different cryptographic machines and their work and efficiency of encrypting and decrypting data of those machines.