PRODIGY_CS_01

Caesar Cipher 🔐

Description 📝

This is a simple Python implementation of the Caesar Cipher encryption and decryption technique. The Caesar Cipher works by shifting letters in the alphabet by a fixed amount. It can be used to encode or decode a message by specifying the direction (encrypt or decrypt).

How It Works ⚙️

1. The user is prompted to choose whether they want to encode (encrypt) or decode (decrypt) a message.
2. The user enters their message, which is converted to lowercase for consistency.
3. The user specifies a shift value, determining how many positions each letter moves in the alphabet.
4. The program then processes the message:
   • If encoding, each letter is shifted forward.
   • If decoding, each letter is shifted backward.
5. Non-alphabet characters (such as numbers, spaces, and punctuation) remain unchanged.
6. The encrypted or decrypted result is displayed.
7. The user can choose to run again or exit the program.

Example Usage 🎯

Type 'encode' to encrypt, type 'decode' to decrypt:
encode
Type your message:
hello
Type the shift number:
3
Here is the encoded result: khoor

Type 'encode' to encrypt, type 'decode' to decrypt:
decode
Type your message:
khoor
Type the shift number:
3
Here is the decoded result: hello

Features 🚀

✅ Simple and beginner-friendly Python implementation. ✅ Works with both encryption and decryption. ✅ Handles non-alphabet characters properly. ✅ Allows users to continue or exit as needed.

How to Run ▶️

1. Copy the Python code into a file (e.g., caesar_cipher.py).
2. Run the script in a Python environment:

   python caesar_cipher.py

3. Follow the prompts to encrypt or decrypt messages.

Thank You! 🎉

We hope you enjoy using this simple Caesar Cipher program! Have fun encrypting and decrypting messages! 🔏