1. Cryptography: Basics 2. Outline Classical Cryptography Caesar cipher Vigenère cipher DES Public Key Cryptography Diffie-Hellman RSA Cryptographic Checksums HMAC 3. Cryptosystem…

Slide 1November 1, 2004Introduction to Computer Security ©2004 Matt Bishop Slide #8-1 Chapter 8: Basic Cryptography Classical Cryptography Public Key Cryptography Cryptographic…

Slide 1 1 Cryptography Slide 2 2 Overview Classical Cryptography  Caesar cipher  Vigenère cipher  DES Public Key Cryptography  Diffie-Hellman  RSA Cryptographic…

Slide 1 Autokey Ciphers Slide 2 History The Autokey Cipher is almost identical to the Vigenère Cipher – only it’s more secure It was first invented by Girolamo Cardano…

Slide 1 CIS 725 Security Slide 2 Cryptosystem Quintuple ( E, D, M, K, C ) M set of plaintexts K set of keys C set of ciphertexts E set of encryption functions e: M  K…