Steganography
Hal
hfinney at shell.portal.com
Tue Aug 2 07:32:33 PDT 1994
Andrew Brown <a.brown at nexor.co.uk> writes:
>I'm currently on the look out for new steganography ideas (you might have
>seen the patches I wrote that allow files to be hidden in gzip compressed
>files). I thought of a load of obvious stuff like adding/not adding
>spaces at the end of lines of a text file, carefully choosing assembler
>instructions where two are available, etc. Has anyone got any more ideas?
One possibility would be to right-justify your text, as a few
people like to do, then to tweak the algorithm for inserting
spaces into lines to depend on the next bits of the embedded mes-
sage. Generally, you have N spaces to insert into M word breaks.
If M divides N, you don't have any choice, but otherwise you have
N mod M "leftovers" to distribute among M. This would allow
several bits per line.
Hal
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