Picture encoding. A must read....
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Picture encoding. A must read....
I have been working on this for a few days now and I finally finished it. I'm pretty excited to present this to a limited public. The possibilities for its use are endless! Enjoy, give me feedback, and let me know what you think.
Text inside picture - Image Encoding
Text inside picture - Image Encoding
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jack_indigo
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Re: Picture encoding. A must read....
Steganagraphy, right?
- JAB Creations
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Re: Picture encoding. A must read....
Now that is pretty dam nifty.
I have a secret message for you and the password is composed of the first six digits of the password from SpaceBalls...
*EDIT* - I shouldn't have saved with the default file name...gah what a noob mistake to make.
I have a secret message for you and the password is composed of the first six digits of the password from SpaceBalls...
*EDIT* - I shouldn't have saved with the default file name...gah what a noob mistake to make.
Last edited by JAB Creations on Thu Jul 17, 2008 4:10 pm, edited 1 time in total.
Re: Picture encoding. A must read....
Of course. I am going to add more image formats hopefully, and eventually make a version where you can encode a picture inside a picture... I'm not going to say what the possibilities are for that, but lets say its used quite often for illegal activities. I'm sure it has other possibilities as well. Any other ideas?jack_indigo wrote:Steganagraphy, right?
Re: Picture encoding. A must read....
Steganography.
The script's not actually working though.
Also, as all cryptography-related things old and open is better than new and closed.
The script's not actually working though.
Also, as all cryptography-related things old and open is better than new and closed.
Re: Picture encoding. A must read....
It appears some special characters do not work. If you type in regular sentences, it works. I haven't gone through all the specifics yet, this is just a first release I quickly finished last night. I'll look into it more as what does and does not work.
Re: Picture encoding. A must read....
No, by "not working" I mean it gives me a desktop screenshot instead of the bitmap I uploaded, and when I feed it back the desktop bmp with the password it just returns rubbish.
Re: Picture encoding. A must read....
I have no idea what you are doing then. There definitely is no code to return a screen shot of your desktop. The code merely edits the .bmp byte array. The only type of picture you should get back is the encoded .bmp or nothing at all, please give me more detail on what you are doing exactly to get a screen shot of your desktop?Mordred wrote:No, by "not working" I mean it gives me a desktop screenshot instead of the bitmap I uploaded, and when I feed it back the desktop bmp with the password it just returns rubbish.
Re: Picture encoding. A must read....
Not my desktop, a desktop. It was apparently the same image JAB used before me, and a bug in your code served me that.
Re: Picture encoding. A must read....
Oh, I understand now. Yes, my code overwrites the image it displays every time, so if one person were to lag while another was encoding a picture elsewhere, you might get their picture displayed. I will change how that works as well.
Re: Picture encoding. A must read....
I wrote a steganography script once. http://www.ooer.com/13/Steganography-With-GD/1
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alex.barylski
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Re: Picture encoding. A must read....
I've seen something like this years ago on the screen savers...
Would it actually work with JPEG? Wouldn't being a lossy compression have a obfuscating effect on the password?
Would it actually work with JPEG? Wouldn't being a lossy compression have a obfuscating effect on the password?
Re: Picture encoding. A must read....
The way mine works breaks with a jpeg. It uses lowest order bit in the color of each pixel to hide the data. In a jpeg you can't be certain what each color is going to be.
Re: Picture encoding. A must read....
Yea i saw this along time ago on the screen savers too.Hockey wrote:I've seen something like this years ago on the screen savers...
Would it actually work with JPEG? Wouldn't being a lossy compression have a obfuscating effect on the password?
You can even hide a file inside a bmp image file.