Crypto Encryption Project

This project demonstrates a simple file encryption process using C and a shell script. The project allows you to encrypt multiple files stored in a directory and save the encrypted files in a separate directory.

Features

• File Encryption: Encrypts files using a simple XOR-based encryption algorithm.
• Directory Management: Automatically checks and manages the input (upload) and output (encrypted) directories.
• Error Handling: Provides robust error handling for missing directories, empty directories, and file access issues.

Project Structure

crypto-encryption-project/
├── README.md           
├── LICENSE             
├── encrypt.c           
├── encrypt_files.sh    
├── upload/             
│   ├── example.txt    
├── encrypted/          # Directory where encrypted files are saved (created by script)
└── .gitignore

Requirements

• GCC : To compile the C program.
• Bash : To run the shell script.

Setup and Usage

1. Clone the Repository :

git clone https://github.com/techiuv/crypto-encryption-project.git
cd crypto-encryption-project    

2. Compile the C Program :

 gcc -o encrypt encrypt.c

3. Prepare Files for Encryption : Place the files you want to encrypt into the upload/ directory. Example file (example.txt) is already provided.

4. Run the Shell Script :

./encrypt_files.sh

The script will:

Check if the upload directory exists and contains files. Create the encrypted directory if it doesn’t exist. Encrypt each file in the upload directory and save the encrypted files in the encrypted directory. 5. Check Encrypted Files After running the script, you can find the encrypted files in the encrypted/ directory.

6. Customization You can change the encryption key by editing the ENCRYPTION_KEY variable in the encrypt_files.sh script.

Error Handling

The script and C program handle various errors, including:

• Missing or unreadable directories.
• Files that cannot be read or written.
• General encryption failures.

License

This project is licensed under the MIT License. You are free to use, modify, and distribute this software in your own projects.

Contribution

Contributions are welcome! Please fork this repository and submit a pull request with your changes.

Explanation of Sections:

1. Features: Summarizes what the project does.
2. Project Structure: Shows how files and directories are organized.
3. Requirements: Lists the necessary software.
4. Setup and Usage: Provides step-by-step instructions on how to set up and use the project.
5. Error Handling: Briefly mentions how errors are managed.
6. License: Specifies the licensing terms.
7. Contributions: Invites others to contribute to the project.
8. Contact: Provides ways for users to get in touch or report issues.

This README.md file should provide all necessary information for users and contributors to understand and use your project effectively.