Detailed Course Information

Introduction to Cryptography

              Caesar Ciphers
              ROT13
              Steganography
              Sending Messages with Numbers
              Breaking Caesar Ciphers
              Navajo Code Talkers

Substitution Ciphers

              Keyword Ciphers
              Cryptography in Fiction
              Letter Frequencies
              Breaking Substitution Ciphers
              Nomenclators

Vigenère Ciphers

              Combining Caesar Ciphers
              Transposition Ciphers
              Cracking Vigenère Ciphers Using Key Length
              Factorization
              Solving Problems Using Number Theory
              Cracking Vigenère Ciphers Using Common Factors
              Long Keywords

Modular Arithmetic

              Introduction to Modular Arithmetic
              The Zimmerman Telegram
              Applications of Modular Arithmetic
              Check Digits

Multiplicative and Affine Ciphers

              Multiplicative Ciphers
              Password Security
              Using Inverses to Decrypt
              The Enigma Machine
              Affine Ciphers
              Atbash and Pigpen Ciphers

Math for Modern Cryptography

              Finding Prime Numbers
              Properties of Exponents
              Raising to Powers in Modular Arithmetic
              Numeration Systems

Public Key Cryptography

              The RSA Cryptosystem
              Cryptographic Hash Functions
              Revisiting Inverses in Modular Arithmetic
              Sending RSA Messages

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