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Author Topic: YASA (Yet Another Steganography Application)  (Read 15406 times)

hollowlife1987

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YASA (Yet Another Steganography Application)
« on: December 30, 2007, 06:28:36 AM »
YASA is a small learning project made in C# using the .Net framework 2.0
YASA will take an source image in bmp, png or jpg format and hide any type of data inside of it and save as png

http://yasa.hollow-net.net

yasa1.png

EDIT:
Tested YASA under Ubuntu 7.04 using Mono and it works perfectly fine. :)
If a mac user with an intel and/or ppc cpu could please test using mono it would be greatly appreciated.

Ubuntu 7.04 running YASA
yasa-mono.png
« Last Edit: December 31, 2007, 06:48:38 AM by hollowlife1987 »

app103

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Re: YASA (Yet Another Steganography Application)
« Reply #1 on: December 30, 2007, 06:37:59 AM »
This is pretty cool.

How well would this work with a highly compressed jpg file that has the right amount of pixels to hide the desired file?

Would this result in an image that would have a much larger file size than the original image + the hidden file?

hollowlife1987

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Re: YASA (Yet Another Steganography Application)
« Reply #2 on: December 30, 2007, 06:42:56 AM »
Yeah, converting from jpg to png will increase the file size quite a bit actually.
But if you take a regular png and add the data to it it shouldn't change the file size much if at all.

Deozaan

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Re: YASA (Yet Another Steganography Application)
« Reply #3 on: December 30, 2007, 07:10:03 PM »
Neat! Here's one with hidden information inside!

test.png


Veign

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Re: YASA (Yet Another Steganography Application)
« Reply #4 on: December 30, 2007, 07:38:23 PM »
That's kinda cool.  I wrote on that would let you hide simple phrases inside of an Image file but think your method of hiding a file is a much better idea.

hollowlife1987

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Re: YASA (Yet Another Steganography Application)
« Reply #5 on: December 30, 2007, 07:42:33 PM »
Neat! Here's one with hidden information inside!
 (see attachment in previous post)
Nice hidden pic :-p

That's kinda cool.  I wrote on that would let you hide simple phrases inside of an Image file but think your method of hiding a file is a much better idea.
Thank, you if you ever want to algorithm on how its being done or anything feel free to ask.
As I said this is a learning project for me so I would more than be happy to share my knowledge gained by working on this. :)

hollowlife1987

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Re: YASA (Yet Another Steganography Application)
« Reply #6 on: December 31, 2007, 07:22:19 AM »
In my previous post in reply to app's i stated that the application should not be increasing the file size upon further testing i was wrong.
Keeping the file size near the same has been added to my todo list for this application.

Veign

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Re: YASA (Yet Another Steganography Application)
« Reply #7 on: December 31, 2007, 03:18:15 PM »
Maybe we can work together on creating an online application to do this in PHP.  Might be an interesting thing...

hollowlife1987

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Re: YASA (Yet Another Steganography Application)
« Reply #8 on: December 31, 2007, 05:47:22 PM »
Maybe, i know my friend Krishean who helped me with the algorithm made a php version from my code.
I've changed it a bit more since then but yeah a PHP or even ASP.net version ;) would be great also :)

RED_404

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Re: YASA (Yet Another Steganography Application)
« Reply #9 on: January 14, 2008, 10:53:24 PM »
Nice App



Edit: removed link to external image (http://www.dazoe.net/red/4k.png) which packs an exe file inside.

Sorry I put a 4k demo inside:http://www.pouet.net...prod.php?which=34526
« Last Edit: January 27, 2008, 06:35:59 PM by RED_404 »