File Encryption and Decryption Tool

This project implements a simple file encryption and decryption tool using the Caesar cipher technique in C++. It is designed to protect your files by applying a basic ciphering technique that shifts characters by a defined number, securing the contents of the file.

Features

• File Encryption: Encrypts the contents of a file using the Caesar cipher algorithm, shifting the characters by a user-defined key.
• File Decryption: Decrypts an encrypted file back to its original content using the same key used for encryption.
• C++ Implementation: Efficiently written in C++ for fast performance.
• Lightweight and Simple: Easy to understand and use, with minimal dependencies.

Technologies Used

• C++: The core programming language used for the tool.
• Caesar Cipher: A classical encryption technique where each character in the text is shifted by a fixed number of positions in the alphabet.

Getting Started

Prerequisites

Ensure you have a C++ compiler installed on your system (e.g., GCC for Linux or MinGW for Windows).

Installation

1. Clone the repository:

   git clone https://github.com/dhanraj-12/Encryption_decryption_tool.git

2. Navigate to the project directory:

   cd Encryption_decryption_tool

3. Compile the code:

   g++ encrypt_decrypt.cpp -o encrypt_decrypt

Usage

To encrypt a file:

./encrypt_decrypt -e <file_path> <shift_key>