In this lesson, students will explore the basics of cryptography by learning about the Caesar cipher, one of the earliest encryption methods. They will use a Caesar cipher wheel to encrypt and decrypt messages, analyze the number of possible keys, and implement a simple encryption program using JavaScript.
Students will be able to:
This lesson introduces students to the concept of decryption in the Caesar cipher. Students will extend their existing encryption program to include a decryption feature and apply their understanding of shifting characters in the alphabet. They will also experiment with breaking a Caesar cipher through brute-force techniques.
Students will be able to:
- Implement a decryption function in JavaScript for a Caesar cipher.
- Understand how encryption and decryption are inverse operations.
- Experiment with breaking an encrypted message through brute-force shifting.
- Reflect on the strengths and weaknesses of the Caesar cipher.
Students will explore cryptographic techniques, including the Caesar and Vigenère ciphers, to understand encryption and decryption methods. Through hands-on activities, students will analyze letter frequency, perform brute-force decryption, and implement their own cipher algorithms in JavaScript. The lesson will also integrate an ethical discussion on cryptography and data privacy.
Students will be able to:
- Explain the principles of encryption and decryption.
- Apply Caesar and Vigenère ciphers to encrypt and decrypt messages.
- Analyze letter frequency and its role in breaking ciphers.
- Develop a Vigenère cipher algorithm using pseudocode and JavaScript.
- Discuss ethical considerations related to cryptography and data security.
In this lesson, students will explore the concepts of key exchange and encryption, unlocking the secrets of how messages are protected online.
Students will be able to:
