Tag: cryptoApr 20, 2023Caesar Cipher Caesar Cipher A type of substitution cipher that shifts the alphabet by 3 places. Example: Fade becomes IDGH ... 4/20/2023 SeedCryptoApr 20, 2023Claude Shannon Claude Shannon The father of modern cryptography... 4/20/2023 SeedCryptoApr 20, 2023Historical Cryptography Historical Cryptography Egypt 1900 BC Hieroglyphics Assyria 1500BC Cuneiform Spartan Scytale Transposition Cipher by writing message on parchment wrapped around a rod 1518 Johannes Trithemus wrote the... 4/20/2023 SaplingCryptoApr 20, 2023Kerckhoff's Principle Kerckhoff's Principle Released in 1883 "The strength of the cryptosystem is based on the secrecy of the key." See also: Moore's Law... 4/20/2023 SeedCryptoApr 20, 2023Lucifer Cipher Lucifer Cipher Developed in 1976 by Horst Feistel of IBM Modified by NSA to become the US Data Encryption Standard (DES) Thought to resist... 4/20/2023 SeedCryptoApr 20, 2023Moore's Law Moore's Law The number of transistors on a chip will double every 18 months, and the price will halve.... 4/20/2023 SeedCryptoApr 20, 2023New Directions New Directions "New Directions in Cryptography" was a paper published in 1976 by Whitfield Diffie and Martin Hellman that proposed two mathematically... 4/20/2023 SeedCryptoApr 20, 2023Substitution Cipher Substitution Cipher A cipher that involves replacing one value for another. See also: Transposition Cipher... 4/20/2023 SeedCryptoApr 20, 2023The Enigma The Enigma Initially designed as a civilian cipher to protect trade secrets Used by Germany in WW2 Example of an excellent system deployed imperfectly See... 4/20/2023 SeedCryptoApr 20, 2023The Purple Machine The Purple Machine The US codename for the WW2 Japanese Foreign Office cryptosystem used for diplomatic communications Used before and during WW2 Electromechanical stepping-switch using... 4/20/2023 SeedCrypto«««12»»»