Overview

Students use a widget to experiment with the Vigenère cipher to learn about the relationship between cryptographic keys and passwords.

Vocab

• Computationally Hard - a "hard' problem for a computer is one in which it cannot arrive at a solution in a reasonable amount of time.

Resources

• Exploring the Vigenere Cipher Widget - Worksheet (copy as MS Word, Google Doc)

• Keys and Passwords - Worksheet (copy as MS Word, Google Doc)

• The Internet: Encryption & Public Keys - Video (download)

• (Optional) How Not to Get Hacked - Resource