hnjm/steganography-library

A C# library allowing anyone to consume my own implementation of steganography, using a LSB (Least Significant Bit) method.

Steganography

This is my own implementation of steganography, using a LSB (Least Significant Bit) method.
The way this works is by taking the LSB for every byte in a pixel (There are four in this case ARGB)
and changing the LSB to one bit of the data that you are trying to store. For example if I have
one byte of data I would like to store, I could store it in two pixels. I can store 4 bits
in one pixel without modifying the image enough that it is visible to the naked eye. In this
implementation I am only storing string data, but this can be made to store anything from files
to other images completely, like QR codes.

How do I use this?

This version of my implementation is built for developer advantage. It is a consumable code library giving developers ease
of access to writing their own steganography tools in C#. Simply import this DLL to your code base and you are ready to go!

using Steganography_Library;
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Steganography
{
    class Program
    {
        static void Main(string[] args)
        {
            //Must be SAVED as a png, can be loaded FROM any format!
            SteganographicImage stegoImage = new SteganographicImage(new Bitmap(Image.FromFile("Image.png")));
            stegoImage.EncodeImage(Encoding.UTF8.GetBytes("Secret Message")).Save("NewImage.png");

            //Decoding, load from png
            stegoImage = new SteganographicImage(new Bitmap(Image.FromFile("NewImage.png")));
            Console.WriteLine(stegoImage.DecodeImage());
        }
    }
}

Bugs and issues

If you encounter and bugs or issues, feel free to open an issue on GitHub. I will address these issues as soon as I can.