🔐 SecureCrypt

Advanced Text Encryption & Decryption Tool (Java Swing)

SecureCrypt is a lightweight yet powerful desktop application that provides fast and reliable text encryption and decryption using both classical and modern cryptographic algorithms. Designed with a clean UI and secure AES-based password protection, it is ideal for students, developers, and anyone who works with sensitive text data.

🚀 Features

• Multiple Algorithms Supported

  • Caesar Cipher
  • Base64
  • AES (GCM)
  • Reverse Text
  • ROT13
  • XOR Cipher
  • Atbash Cipher
  • Vigenere Cipher
  • Hex Encode / Decode
  • Substitution Cipher

• Master Password Protection

  • Optional AES-256 encryption layer
  • Password-derived key using SHA-256
  • Secure IV generation

• Modern UI

  • Gradient background
  • Clean, simple interface
  • Titled input/output panels
  • Dark/Light friendly design

• File Tools

  • Save input/output to file
  • Load text from file
  • Integrated About window

📦 Installation & Usage

1. Clone the repository

   git clone https://github.com/thefallenmaster/SecureCrypt.git

2. Go into the project directory

   cd SecureCrypt

3. Compile

   javac SecureCrypt.java

4. Run

   java SecureCrypt

🧩 How It Works

1. Enter text into Input Text
2. Select an Encryption Algorithm
3. (Optional) Enter a Master Password
4. Click Encrypt or Decrypt
5. Output appears instantly in the Output Text panel

📸 Screenshot

🛠 Built With

• Java 8+
• Java Swing
• AES/GCM Encryption
• SecureRandom + SHA-256
• Base64 Encoding

🔒 Security Notes

• AES encryption uses GCM mode for authenticated encryption.
• Password protection uses SHA-256–derived keys.
• IVs are securely generated each time.

📄 License

This project is licensed under the MIT License.
See the LICENSE file for details.

👤 Author

Gauthambala
Passionate about secure, user-friendly applications.