Steganography (Hidden Images-secret agenty stuff) v3.0 Updated July 12, 2014

[azurithil]

Secret message inside it

[The_Lionhearted]

Hey! Quit saying stuff about my mom!

[Kemaru]

Yay! To be honest, I'm not quite sure what this does. Downloading it.

[AshleighVengeance]

tell me why I cant find any of the plug ins in my paint.net...

I've installed them and everything.

[Simon Brown]

Try the effects menu.

[pyrochild]

Wow, Simon, aren't you just overflowing with helpfulness?

Try this, AshleighVengeance: viewtopic.php?f=16&t=2023

[AshleighVengeance]

They don't come up.

[david.atwell]

Do you have any Paint.NET DLL files in the plugin folder?

[AshleighVengeance]

I figured it out but no one told me that I was supposed to put them in the effects folder.

[AshleighVengeance]

I lied...I didnt see the part about putting it in there.

[ssbmbeliever]

Take a look at my pic, color steganography.

It says what I have to say about this plugin.

[lemonsourkid]

I am having trouble with Boltbait's Steganography plugin. Whenever I try to reveal an image, color or black and white, I get the revealed image but with scan lines as seen in the picture below.

I have tried this with pictures that I encoded myself meaning this is a problem with the reveal image part. This problem seemed to have started when I installed 3.5.1. I have downloaded the latest steganography plugin. Any help is appreciated.

Edit: Actually I found the problem. I feel like a complete idiot. It was that I actually didn't have the latest version. However, the version you download here isn't the same as the one in his plugin pack.

Hidden Content:

Either that or I'm making an even more complete fool of myself. :?

[BoltBait]

I have recompiled this plugin for Paint.NET 4.0.

The algorithm is the same, only the UI has changed.

Check the first post in this thread for download link. Install the normal way.

(Yes, I've been cleaning up all my older plugins. I think this is the last one. )

Source code to the decoders:

Hidden Content:

// Title: BoltBait's Steganography B&W Decoder v2.0
// Name: B&W Decoder
// Submenu: Steganography
// URL: http://boltbait.com/pdn/
// Author: BoltBait
// Keywords: Steganography|Decode|hidden|hide|secret|agent
// Desc: Reveal a hidden color image
#region UICode
#endregion

void Render(Surface dst, Surface src, Rectangle rect)
{
	for (int y = rect.Top; y < rect.Bottom; y++)
	{
        	if (IsCancelRequested) return;
		for (int x = rect.Left; x < rect.Right; x++)
		{
			ColorBgra HiddenPoint = src[x,y];
			int GrayLevel = ((((int)HiddenPoint. & (int)1) * 4);
			GrayLevel += (((int)HiddenPoint.G) & (int)1) * 2;
			GrayLevel += (((int)HiddenPoint.R) & (int)1);
			HiddenPoint.R = (byte)(GrayLevel * 32);
			HiddenPoint.G = (byte)(GrayLevel * 32);
			HiddenPoint.B = (byte)(GrayLevel * 32);
            		dst[x, y] = HiddenPoint;
		}
	}
}

Hidden Content:

// Title: BoltBait's Steganography Color Decoder v2.0
// Name: Color Decoder
// Submenu: Steganography
// URL: http://boltbait.com/pdn/
// Author: BoltBait
// Keywords: Steganography|decode|hidden|hide|secret|agent
// Desc: Reveal a hidden color image
#region UICode
#endregion

void Render(Surface dst, Surface src, Rectangle rect)
{
	for (int y = rect.Top; y < rect.Bottom; y++)
	{
        	if (IsCancelRequested) return;
		for (int x = rect.Left; x < rect.Right; x++)
		{
			ColorBgra HiddenPoint = src[x,y];
			HiddenPoint.R = (byte)((((int)HiddenPoint.R) & (int)7) * 36);
			HiddenPoint.G = (byte)((((int)HiddenPoint.G) & (int)7) * 36);
			HiddenPoint.B = (byte)((((int)HiddenPoint. & (int)7) * 36);
			dst[x, y] = HiddenPoint;
		}
	}
}

[BoltBait]

I just updated this plugin. Now, all hidden images are dithered before being hidden. This is the standard Floyd-Steinberg Dithering method.

Dithering dramatically improves the quality of the hidden image.

Algorithm for decoding remains the same.

[NitroN]

Hey, was just wondering wether this picture can be "decrypted" with other programs? If so, which ones?