After completing this experiment, you will be able to:

1. Understand Basic Cryptography Concepts

   • Comprehend the fundamental principles of encryption and decryption.
   • Understand substitution-based encryption techniques and the role of secret keys.
   • Recognize the importance of key space in cryptographic systems.

2. Master Shift Cipher Operations

   • Perform encryption and decryption using the Shift Cipher.
   • Apply modular arithmetic to implement the Shift Cipher.
   • Calculate the total number of possible keys for a given alphabet.

3. Analyze Cryptographic Security

   • Explain why the Shift Cipher is considered insecure for modern applications.
   • Analyze how key space influences the resistance of an encryption scheme to brute-force attacks.
   • Recognize the limitations of classical substitution ciphers.

4. Develop Cryptanalysis Skills

   • Apply brute-force attacks to recover plaintext and encryption keys.
   • Use frequency analysis to identify likely plaintext from ciphertext.
   • Determine encryption keys from known plaintext-ciphertext pairs.

5. Apply Practical Knowledge

   • Solve practical cryptographic problems using the Shift Cipher.
   • Evaluate the strengths and weaknesses of classical encryption algorithms.
   • Relate the concepts learned from the Shift Cipher to modern cryptographic techniques.