Introduction to Cryptography

Introduction to techniques in cryptography, accompanied by analysis of historical and societal consequences. Topics include elementary combinatorics and number theory, including modular arithmetic and prime numbers; classical ciphers and accompanying attacks; the Enigma machines; modern encryption schemes, including public channel cryptography. Prerequisite: Mathematics 212, 216, 219, 221, or 222, or consent of instructor. Not open to students who have taken Mathematics 404.