Cryptography has a long history. The use of cryptography beginning of the use of cryptography by the Egyptians 4000 years ago. Historically there are four groups of people who contributed to the development of cryptography, in which they use cryptography to ensure confidentiality of communications important message, namely the military, diplomatic circles, diarist, and lovers (lovers). Among the four groups, the military is the most important contribution because the atmosphere in the messaging war techniques require complex encryption and decryption.History of cryptography is largely a history of classical cryptography, the encryption method using paper and pencil or perhaps with the help of a simple mechanical device. In general, classical cryptography algorithm is divided into two, namely the algorithm transpose (change the order of the letters in the message) and substitution algorithm (replacing a letter with another letter).
In the 17th century, the history of cryptography noted the victim when the queen of Scotland, Queen Mary beheaded after a secret letter from behind bars that it was a plan to assassinate Queen Elizabeth I successfully solved by a code breaker. In World War II, Nazi German government made a machine called Enigma encryption. But the machine was successfully solved by the allies and the success of this machine is often said to solve sebgai factors that shorten World War II.
Modern cryptography is triggered by the development of the digital computer equipment. With a digital computer, the more complex chipper is very likely to be generated. Unlike classical cryptography to encrypt character by character, modern cryptography and operates on binary strings. Artikel
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