CGPDFDocument and the trailer/encrypt dictionary

Asked Oct 03 '12 at 13:48

Active Oct 03 '12 at 13:48

Viewed 273 times

I am trying to get access to the /Encrypt dictionary in the Trailer to check permissions on a PDF. CGPDFDocument only gives access to the Info and Root (top level) dictionaries it seems.

CGPDFDocumentGetCatalog CGPDFDocumentGetNumberOfPages CGPDFDocumentGetPage CGPDFDocumentGetVersion CGPDFDocumentGetInfo CGPDFDocumentGetID

Any ideas on how to get to the file permissions beyond Printing and Copying ?

CGPDFDocumentAllowsCopying CGPDFDocumentAllowsPrinting

asked Oct 03 '12 at 13:48

pchronos

Perhaps there's some base knowledge I don't have, but it's not clear what you're trying to ask. – akraut Oct 03 '12 at 20:07
1

Looking for a way to read a PDF's security permissions. There are more than just allowed to print and copy ( such as "sign" etc... ) – pchronos Oct 04 '12 at 05:15
did anyone ever figure this out? – user714171 Feb 29 '16 at 17:47

CGPDFDocument and the trailer/encrypt dictionary

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