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Tech Apps and Coding

Lesson 5.5 Basic Crypto Systems: Vigenere Cipher

Description

In this lesson, students will learn and use the Vigenère Cipher. The Vigenère Cipher consists of several Caesar ciphers in sequence with different shift values based on a keyword, so brute force and letter frequency analysis do not work.


Objective

Students will be able to:

  • Explain how the Vigenère Cipher works and why it is not as easy to crack as the Caesar Cipher