Encrypted Clipboard

A secure web application for sharing encrypted text messages. Users can encrypt text with a password and share the generated ID. Recipients can decrypt the message using the ID and password.

Features

• Secure Text Sharing: Encrypt messages with password-based encryption
• Simple Interface: Clean, easy-to-use web interface
• No Persistence: Data stored in memory only, cleared on server restart
• Client-side Encryption: Text is encrypted before transmission
• Password Protection: Messages can only be decrypted with the correct password

Tech Stack

• Backend:

  • Python 3.x
  • Flask (Web Framework)
  • cryptography (Encryption Library)

• Frontend:

  • HTML5
  • CSS3
  • Vanilla JavaScript

Installation

1. Clone the repository:

   git clone https://github.com/Priyanka959/encryption-tool.git
   cd encryption-tool

2. Create a virtual environment and activate it:

   python -m venv .venv
   # On Windows:
   .venv\Scripts\activate
   # On Unix/MacOS:
   source .venv/bin/activate

3. Install dependencies:

   pip install -r encrypted_clipboard/requirements.txt

Running the Application

1. Start the Flask server:

   # From the project root:
   python -m encrypted_clipboard.backend.app

2. Open your browser and navigate to:

   http://localhost:5000
   

Usage

Sending a Message

1. Enter your text in the "Text to Send" field
2. Enter a secure password
3. Click "Send"
4. Copy the generated Clipboard ID

Receiving a Message

1. Enter the Clipboard ID
2. Enter the password
3. Click "Receive"
4. The decrypted message will be displayed

Security Notes

• Messages are encrypted using Fernet (symmetric encryption)
• Passwords are used to derive encryption keys
• Data is stored in memory only and cleared when the server restarts
• Use strong, unique passwords for each message
• The server never stores the original password
• Messages are encrypted before transmission

Development

The project structure:

encrypted_clipboard/
├── README.md
├── requirements.txt
├── backend/
│   ├── app.py          # Flask application
│   ├── crypto_utils.py # Encryption utilities
│   └── storage.py      # In-memory storage
└── frontend/
    ├── index.html
    ├── script.js
    └── style.css

Contributing

1. Fork the repository
2. Create a feature branch
3. Commit your changes
4. Push to the branch
5. Create a Pull Request

License

This project is open source and available under the MIT License.