[OS X TeX] Pdf security settings

[Ignacio Romero]

Hi,

Does anybody know how to control the security settings of a pdf file from 
pdftex? What I would like to do is to produce a pdf file that cannot be 
modified afterwards. I know this can be done with Adobe Acrobat but I 
would like to do it directly from pdftex or, as a second option, with some 
kind of (free) postprocessing.

Thanks

Ignacio


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