“If he had anything confidential to say, he wrote it in cipher, that is, by so changing the order of the letters of the alphabet, that not a word could be made out. Old Greeks over 2000 years ago used Scytale– ciphering ‘machine’ to produce transposition ciphertext, and to Greeks we owe cryptology term – Cryptography, or cryptology (from Ancient Greek: κρυπτός, romanized: kryptós “hidden, secret” and γράφειν graphein, “to write”, or -λογία -logia, “study”)Ĭaesar Cipher is one of most well know ciphers even today – as I mentioned, it was described by Greek writer Polyibus, but first recored use was by Julius Caesar. It is believed that ancient Egyptians used unusual symbols to obscure meaning of the inscriptions. First intentional modification of the text to hide some information occurred about 4000 years ago in ancient Egypt.
History of ciphers is longer than anybody could’ve expected – it began thousands of years ago. I was intending to start writing about things related to cryptography, so we will begin with “ back to the roots”! It’s very basic python implementation of shift cipher, also known as Caesar Cipher, Polybius cipher or ROT 13 (depends on shifting value), which is primitive form of substitution cipher. Today I would like to show you little crypto script, that helped me solve Nested Easter Egg in WebSec 101: JuiceShop ⭐⭐⭐⭐ challenges 2/3!
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