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Due to this reason, with the advancement of digital encryption and the passage of time, the Playfair cypher was no more an acceptable form of encoding messages as there was a risk of data getting into the wrong hands. However, after the invention of computers, the Playfair cypher was no longer used, as the computers can solve Playfair cyphers in a few seconds using break codes. Further, it didn’t need any special tools or equipment to encrypt or decrypt the information. The Playfair cipher was significantly popular in the World War I and II era because of its complexity level compared to the then available ciphers. By the time the enemy cryptanalysts could decrypt the information, it was useless for them. The primary use of the cipher was for protecting vital but non-critical secrets during actual combat. British Forces used it for tactical purposes during World War I and the Second Boer War, and Australians utilized it during World War II. The Playfair cipher is relatively fast and doesn’t require special equipment. Unlike single letters in a simple substitution cipher, the Playfair cipher technique encrypts digraphs or parts of letters. Invented in 1854 by Charles Wheatstone, the cipher got its name from Lord Playfair, who promoted its use. Playfair cipher is the first and best-known digraph substitution cipher, which uses the technique of symmetry encryption.
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Organizations use raw data to turn it into meaningful information for making vital business decisions. Whether it’s a startup or a conglomerate, data is the most precious asset for today’s businesses.