steGO - Simple LSB Steganography Tool

Written by Ethan Hulse

steGO is a lightweight CLI steganography tool written in Go that allows you to hide and extract secret messages inside PNG images using Least Significant Bit (LSB) encoding.

🚀 Features

✅ Embed messages into PNG images using LSB.
✅ Extract hidden messages from PNG images.
✅ Cross-platform support (Linux, macOS, Windows).
✅ Lightweight & Fast – written in Go, no dependencies required.
✅ Command-line interface for easy use.

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📥 Download

You can download precompiled binaries from the Releases page.

Platform	Binary Name	Download Link
🐧 Linux	steGo	Download
🍏 macOS	steGoMac	Download
🖥 Windows	steGo.exe	Download

⚡ Usage

1️⃣ Hide a Message in an Image

steGo encode image.png secret.png -file texttohide.txt

2️⃣ Extract a Hidden Message

steGo decode secret.png

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Installation Steps (optional)

1. Download the correct binary for your OS.
2. Make it executable (for Linux/macOS):

   chmod +x steGo  # or steGoMac on macOS

3. Move it to a directory in your $PATH:

   sudo mv steGo /usr/local/bin/  # or steGoMac on macOS

For Windows, simply place steGo.exe in any folder and run it from Command Prompt or PowerShell.

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🛠 Building from Source

If you prefer to build steGO yourself, ensure you have Go installed and run:

git clone https://github.com/thvl3/steGO.git
cd steGO
go build -o steGo steGo.go  # Linux
GOOS=darwin GOARCH=amd64 go build -o steGoMac steGo.go  # macOS
GOOS=windows GOARCH=amd64 go build -o steGo.exe steGo.go  # Windows

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❓ FAQ

1️⃣ What image formats does steGO support?

Currently, steGO only supports PNG images for encoding and decoding.

2️⃣ Can I hide files instead of just text?

Right now, steGO supports text messages or .txt files.

3️⃣ Is there a graphical user interface (GUI)?

No, steGO is a command-line tool

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🎯 Planned Features

🔹 Support for additional image formats (JPEG, BMP, etc.)
🔹 Encryption for added security
🔹 Support for hiding entire files inside images
🔹 More advanced steganography techniques (e.g., DCT-based hiding)

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📜 License

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

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❤️ Contributing

Contributions are welcome! Feel free to submit issues, suggest features, or open pull requests.

Steps to Contribute

1. Fork the repo and create a new branch.
2. Implement your changes.
3. Submit a Pull Request for review.

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📧 Contact

For any questions, reach out via: 📬 Email: [email protected]
🐙 GitHub Issues: Create an Issue