Certainly! Here's a README file for your encryption and decryption project:

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Encryption and Decryption Project

Overview

This project implements a simple encryption and decryption algorithm using the Caesar cipher. The Caesar cipher is a substitution cipher where each letter in the plaintext is shifted a certain number of places down or up the alphabet.

Table of Contents

• Encryption and Decryption Project
  • Overview
  • Table of Contents
  • Features
  • How to Use
  • Dependencies
  • Contributing

Features

• Encrypt plaintext messages using the Caesar cipher algorithm.
• Decrypt encrypted messages back to plaintext.
• Supports customizable shift keys for encryption and decryption.

How to Use

1. Clone the repository to your local machine.
2. Run the Python script encryption_decryption.py.
3. Follow the prompts:
   • Enter encrypt for encryption or decrypt for decryption.
   • Enter the message you want to encrypt/decrypt.
   • Enter the shift key to specify the encryption/decryption offset.
4. View the output message.

Dependencies

• Python 3.x

Contributing

Contributions are welcome! If you have suggestions or improvements, feel free to submit a pull request.