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#1 mirror  Icon User is offline

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Embedding files in image

Posted 15 April 2012 - 09:26 AM

hello,

"http://www.dreamincode.net/forums/topic/27950-steganography/"

can this above procedure be applied to implement "Embedding of FILES in an image" also.
thank you !
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Replies To: Embedding files in image

#2 CasiOo  Icon User is offline

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Re: Embedding files in image

Posted 15 April 2012 - 09:31 AM

I dont think it will be possible without noticeable differences in the image
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#3 pbl  Icon User is offline

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Re: Embedding files in image

Posted 15 April 2012 - 10:13 AM

Yes it is the whole purpose of steganography
But you might need a vary large image or a sery of image

"Hey John, here are my last vacation pictures. Look at them attached to this mail"
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#4 mirror  Icon User is offline

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Re: Embedding files in image

Posted 15 April 2012 - 10:33 AM

@pbl: that was cool:bigsmile:
but sounds, somebody is in danger... :helpsmilie: me.

Last week I've spent in trying to embed a file using this algo !
i was unsuccessful.

i desperately need help !
Is there any other procedure, because using "sery of image" is a bit complicated !
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#5 pbl  Icon User is offline

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Re: Embedding files in image

Posted 15 April 2012 - 12:33 PM

What are the size of both your images ?
Assuming you can hide 1 bit in every byte of your original image you will need an original image at least 8 times larger than the one to hide
But in real life, assuming the Alpha byte cannot be used, you will able to hide 3 bits on the hidden image in 4 bytes of the original one, that is more than 8 times.
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#6 mirror  Icon User is offline

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Re: Embedding files in image

Posted 15 April 2012 - 10:51 PM

So, i've a .txt file of 22 B.(this file is needed to be embed )
and .jpg file of 606 KB(this is the carrier file).
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#7 pbl  Icon User is offline

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Re: Embedding files in image

Posted 16 April 2012 - 09:20 AM

22 bytes ???
Sure it will fit in your image file. You can even just use the least significant bit of GREEN (bit 8 of every ARGB)

This post has been edited by pbl: 16 April 2012 - 09:35 AM

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