In this lesson, students will learn how basic encryption and decryption works. There is a need for secrecy when sending and receiving personal information. Encryption and decryption are used to protect personal information.
Students will be able to:
In this lesson, students will learn the history of cryptography. Humans have always had reasons to hide information, and throughout history they have used crypto systems of varying complexity to keep information safe.
Students will be able to:
In this lesson, students will learn and practice using the Caesar Cipher. The Caesar Cipher is an encryption method that predates computers in which each letter of the message is shifted by a certain amount, called the key.
Students will be able to:
In this lesson, students will practice using brute force and letter frequency to crack the Caesar Cipher. The Caesar Cipher is an encryption method in which each letter of the message is shifted by a certain amount, called the key. Cracking the Caesar Cipher with brute force (trying every combination) is a trivial matter for modern computers.
Students will be able to:
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.
Students will be able to: