Python Caesar Cipher

This repository contains a simple implementation of the Caesar Cipher algorithm in Python. The Caesar Cipher is a classic encryption technique where each letter in the plaintext is shifted by a fixed number of positions in the alphabet.

Features

• Encrypt a plaintext message using a shift key.
• Decrypt a ciphertext message using a shift key.
• Handles both uppercase and lowercase letters.
• Ignores non-alphabetic characters during encryption/decryption.

How It Works

The Caesar Cipher shifts each letter in the message by a specified number of positions. For example, with a shift of 3:

• A becomes D
• B becomes E
• Z wraps around to C

Usage

Prerequisites

• Python 3.x installed on your system.

Running the Script

1. Clone the repository:

   git clone https://github.com/Darshan-KC/Python-Caesar-cipher.git
   cd Python-Caesar-cipher

2. Run the script:

   python caesar_cipher.py

3. Follow the on-screen prompts to:

   • Choose between encryption and decryption.
   • Input the message and shift key.

Example

Input:

• Operation: Encrypt
• Message: Hello, World!
• Shift Key: 3

Output:

• Encrypted Message: Khoor, Zruog!

File Structure

• caesar_cipher.py: The main script implementing the Caesar Cipher.

Contributing

Contributions are welcome! If you find bugs or want to enhance the functionality, feel free to fork the repository and submit a pull request.

License

This project is licensed under the MIT License.

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Happy coding! 😊