Image based steganography that survives resizing?

[jd.mubix at gmail.com (Rob Fuller)]

Agreed about the EXIF data, but are you only talking about binary
steganography? You can hide barcodes in images pretty simply that
would survive resizing just fine. Also, are you talking human or
computer legible stego? Peoples choice of stego is highly dependent on
message size,message contents, repetition, and placement.

--
Rob Fuller | Mubix
Room362.com | Hak5.org | TheAcademyPro.com



On Wed, Jan 27, 2010 at 7:42 AM, Jim Halfpenny <jim.halfpenny at gmail.com> wrote:
> Image metadata may survive (EXIF, copyright strings), it really depends on
> how the program manipulating the image handles the image and metadata parts
> of the file. Chances are if the hidden data is in the image data then it
> will not survive resizing, changes to colour deptt, colour maps etc.
>
> Jim
>
> 2010/1/27 Adrian Crenshaw <irongeek at irongeek.com>
> > Hi all,
> > ??? Does anyone know of any image based steganography that survives
> > resizing of the image? I'm looking into using blind drops, but many sites
> > alter images that they post.
> >
> > Thanks,
> > Adrian
> >
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