Unlocking the Secrets of Classical Cryptography: The Fascinating History of Substitution Ciphers 🗝️

have a history of at least 4000 years
3100 B.C ancient Egyptians enciphered some of their hieroglyphic writing on monuments

ancient Hebrews enciphered certain words in the scriptures
100 BC years ago Julius Ceasar used a simple substitution cipher, now known as the Caesar cipher
1200: Roger Bacon described several methods
1392: Geoffrey Chaucer included several ciphers in his works
1460s: Leon Alberti devised a cipher wheel, and described the principles of frequency analysis
1553: Vigenère invented by Giovan Batista Belaso
1585: Blaise de Vigenère published a book on cryptology, and described the polyalphabetic substitution cipher

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