Questions tagged [steganography]

{steganography} is the practice of concealing a message within another message.

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1answer
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Steganography in Latex

I am a teacher. An ongoing problem is that students post assignments to websites like chegg.com to have other people write projects for them. I don't know if the students are providing JPGs or PDFs -...
3
votes
2answers
125 views

Computing letter coordinates (Typesetters Steganography)

Is there a way to find out about the coordinates of letters in a formatted piece of text? Suppose the compiled text has three columns, and the letters are equally spaced. Then what I'm looking for is ...
0
votes
2answers
776 views

How to attach AND HIDE a file in a PDF using Latex?

Embedding a file is fairly easy using LaTeX (see, for example: Embed link to an embedded file). Hiding an embedded file is also possible and fairly easy to do outside LaTeX (see, for example: https://...
10
votes
1answer
311 views

How move each line in text

In steganography is an interesting way of conveying information. Each line is either raised by a few points or not raised at all. How will cause it to subsequent lines of text have been raised about ...
73
votes
8answers
14k views

How to add an invisible watermark to PDF documents?

I'd like to add an invisible watermark to each PDF document that I produce so that in case it leaks, I know where it leaked from. Anyone knows what would a good way for an invisible watermark be in a ...