Classical Cryptography: Substitution Ciphers: Information Security

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 If you like IQPOP please SHARE, LIKE COMMENT, AND SUBSCRIBE to this CHANNEL. The lecture is recorded to help you. For new video Kindly recommend topics in the comment box.