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i export doc to pdf with security options not to extract pages (none). But i can split the pdf to non secure pdfs. Why?
demosthenes
Posted 2016-09-08T13:17:15.260
Reputation: 131
LibreOffice 5 pdf security disable extract pages but pdfsam can split pdf file
Answers
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From the PDF spec:
...a conforming reader technically has access to the entire contents of the document. There is nothing inherent in PDF encryption that enforces the document permissions specified in the encryption dictionary. Conforming readers shall respect the intent of the document creator by restricting user access to an encrypted PDF file according to the permissions contained in the file.
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Andrea Vacondio
Posted 2016-09-08T13:17:15.260
Reputation: 203
so pdfsam does not respect the security options, that is i understand. – demosthenes – 2016-09-08T14:16:32.527
Yes, and likewise any other PDF reader/consumer could decide to do the same so you shouldn't rely on that – Andrea Vacondio – 2016-09-08T14:26:51.413
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Possible duplicate of Adobe PDF security: is it really just an "honor code"?
– fixer1234 – 2016-09-08T18:19:14.443