Please enable JavaScript to use CodeHS

Pennsylvania Tech Apps and Coding

The ABCs of Cryptography

Students dive into the history of cryptography systems, the motivation behind using encryption systems, and basic cryptography systems.

Lessons

5.1 Cryptography, Cryptology, Cryptanalysis

  • Cryptography, Cryptology, Cryptanalysis
  • Cryptography, Cryptology, Cryptanalysis
  • Cryptogram Game!
  • Why encrypt?
  • Why encrypt?
  • +1 more

5.2 History of Cryptography

  • Cryptography: A Brief History
  • Cryptography History Quiz
  • How the Enigma Worked
  • How the Enigma Worked
  • Unknown Languages and the Future of Cryptography
  • +1 more

5.3 Basic Crypto Systems: Caesar Cipher

  • Caesar Cipher
  • Caesar Cipher
  • Caesar Cipher Encryption
  • Decrypt Caesar's Cipher!

5.4 Basic Crypto Systems: Cracking Caesar

  • Cracking Caesar Cipher
  • Cracking Caesar Cipher
  • Cracking Caesar with Brute Force
  • Letter Frequency and Caesar
  • Examining Caesar Cipher

5.5 Basic Crypto Systems: Vigenere Cipher

  • Vigenere Cipher
  • Vigenere Cipher
  • Vigenere Cipher Example
  • Letter Frequency and Vigenere Cipher
  • Examining Vigenere Cipher
  • +1 more

5.6 The ABCs of Cryptography Quiz

  • The ABCs of Cryptography Quiz

Courses that include this module