Slashdot Mirror

← Back to Stories (view on slashdot.org)

Vector Steganography

Posted by michael on from the picture-in-picture dept.

Aphriza writes "DirectionsMag.com has the third in a series on steganography and its uses in a vector format. Its not just for terrorists any more. Plus the scripts are GNU copylefted."

8 of 16 comments (clear)

  1. Re:hoax? by Green+Light · · Score: 1

    Umm, yep, you're right, you haven't read the article...

    This Steganography has nothing to do with your skull, which we now have to wonder about (your skull, that is).

    --
    "Send an Instant Karma to me" - Yes
  2. Re:hoax? by PD · · Score: 2, Insightful

    He must be thinking of phrenology.

    --
    If tits were wings it'd be flying around.
  3. Re:hoax? by ActiveSX · · Score: 1

    I can see how you could get the two confused.

  4. Vector Steganography & Flash? by breon.halling · · Score: 1

    Perhaps this will lead to some kind of steg utility for Flash.

    Could be interesting to embed a different image for every frame of the animation!

    Just a thought...

    --
    "Yeah, well, Dracula called and he's coming over tonight for you and I said okay."
  5. Workaround... by chennes · · Score: 5, Informative

    Unfortunately, I don't see that there is much hope for this actually succeeding as a real tool to watermark data. It is too easy to simply spline all of the data and recalculate the points, obliterating the watermark. Further, a lot of software simply does that automatically to smooth out the data. As soon as it is saved again, the stego is gone.

    1. Re:Workaround... by chennes · · Score: 1
      True, except that these methods are probably not intended for watermarking, but rather merely to hide data.

      Actually, according to the article, that is one of its major intended purposes. While this particular type of stego could be used for many other purposes, it's primary focus is on watermarking geological survey data so that people who use it illegally can be caught.

  6. Re:Two errors in summary by catwh0re · · Score: 1

    the irony is that there are more grammar errors in the troll-speak than the original... good job

  7. pdf/ps form also allows "vector" steganography by retiarius · · Score: 3, Informative

    years ago, ed mccreight of adobe mentioned
    off-handedly to me that font data can easily
    be overspecified (as floating-point),
    yet compatible with standard decoders.
    naturally, this admits the possibility
    of subliminal messages in ordinary-looking
    acrobat format.

    further, even plain ASCII emailable text
    (e.g. slashdot messages, legal briefs, C code,
    email to be archived at the u.s. whitehouse,
    intelligence-gathering agencies, etc.) can be
    (or already has been!) subjected to this
    simple appearance-preserving treatment.
    for further elucidation, see:
    http://developers.slashdot.org/comments.pl?sid=114 89&cid=314165