ComfyUI-Cyber-Steganography 🕵️‍♂️💻

"The best place to hide a secret is in plain sight."

A Cyberpunk/Spy-craft custom node pack for ComfyUI that allows you to hide secret text messages inside AI-generated images using Steganography (LSB).

This tool acts as a "Digital Watermarking" or "Secret Comm Channel" for agents operating in the latent space.

Features

• Stego Encode (The Hider): Embeds a secret text string into an image.
• Stego Decode (The Revealer): Extracts the hidden text from an image.
• Encryption: Optional key-based XOR encryption for an extra layer of security.
• No External Dependencies: Uses pure Python and Pillow (which ComfyUI already uses).

Installation

1. Navigate to your ComfyUI custom_nodes directory:

   cd ComfyUI/custom_nodes/
   

2. Clone this repository (or just copy the folder):

   git clone https://github.com/yourusername/ComfyUI-Cyber-Steganography.git
   

3. Restart ComfyUI.

Usage

Hiding a Secret (StegoEncode)

1. Load an image or generate one.
2. Connect the image to the Stego Encode node.
3. Enter your secret message in the text widget.
4. (Optional) Enter a key to encrypt the message.
5. Connect the output image to a Save Image node or continue your workflow.

Revealing a Secret (StegoDecode)

1. Load an image that contains a secret message.
   • Note: Steganography is fragile. Resizing, compressing (JPEG), or altering the image will destroy the message. Use PNG format.
2. Connect the image to the Stego Decode node.
3. (Optional) Enter the key if one was used during encoding.
4. Connect the output text to a ShowText node or inspect the output.

Technical Details

This node uses Least Significant Bit (LSB) steganography.

• It modifies the last bit of the Red, Green, and Blue channels of the pixels to store data.
• Data format: [32-bit Length Header] + [Message Bits].
• Encryption: Simple XOR cipher if a key is provided.

Disclaimer

This tool is for educational and artistic purposes. It is not military-grade encryption. Do not use for critical security.