File Encryption in Java 

Protect your sensitive data with ease using this simple, Java-based file encryption tool.

This lightweight application provides a straightforward way to encrypt and decrypt your important files using a password-protected system. Utilizing robust encryption algorithms, it secures your data, making it unreadable to unauthorized users. 

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Key Features:

• Password-Based Encryption: Secure your files with a password you choose.

• Easy to Use Interface: While launched from the command prompt, the application presents a clear and intuitive graphical interface for file selection and password entry.

• File Encryption & Decryption: Encrypt your files to protect their contents, and easily decrypt them when you need access.

• Simple Operation: Just enter your password and select the file to encrypt or decrypt.

• Command Line Launch: Conveniently initiate the application directly from your Windows command prompt.

• Adds .enc Extension: Encrypted files are easily identifiable with the .enc extension. 

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How it Works:

1. Launch from Command Prompt: Open your Windows Command Prompt and navigate to the directory where you have saved the CryptographyGUI.class file (after compiling the Java source code).

2. Execute the Application: Run the command java CryptographyGUI.

3. Graphical Interface: A user-friendly window will appear.

4. Enter Password: Type your desired password (for encryption) or the correct password (for decryption) in the designated field.

5. Select Operation:

   • Click the "Encrypt" button to encrypt a file. A file selection dialog will open, allowing you to choose the file to encrypt.

   • Click the "Decrypt" button to decrypt a file. A file selection dialog will open, allowing you to choose the .enc file to decrypt.

6. Confirmation: The application will display a message indicating the success or failure of the encryption/decryption process.

7. Take care of a full Backup.

Benefits:

• Protect Confidential Information: Secure documents, personal files, and other sensitive data from unauthorized access.

• Simple and Convenient: Easy to use without requiring complex command-line knowledge for the core operations.

• Lightweight Solution: A small, self-contained application that doesn't require extensive installation. 

Effortless installation:

One-click solution: Simplify your setup with our one-click installation feature. Simply create C:\crypto as your Java program folder on your Windows machine and you're ready to go! Compile and run the easy way! 

Important Considerations:

• Password is Key: Remember your password! There is no password recovery mechanism. If you lose your password, you will not be able to decrypt your files.

• Encrypted File Extension: Encrypted files will have the .enc extension added to their original name.

• Decryption Requires .enc: When decrypting, ensure you select the file with the .enc extension.

• Basic Encryption: This is a basic encryption tool for personal use. For highly sensitive or critical data, consider using more robust and enterprise-grade encryption solutions.

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To use this tool, you'll need to compile the provided Java source code (CryptographyGUI.java) into a .class file. Then, you can launch the application from your Windows Command Prompt as described above.

This "File Encryption in Java" tool provides a quick and easy way to add a layer of security to your files. Protect your data today!