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."

2 of 16 comments (clear)

  1. 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.

  2. 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