Need help to protect PDF with owner password

[RJC 2009]

Hi All,

I am using PDFBox version 2.0.5 and looking for help to protect a PDF with
owner password.

Here is my test program which is trying to disable the printing option and
protect the document with an owner password.

However, if I use the resultant PDF and run the program again with a
DIFFERENT owner password then it ENABLE the printing option.



Basically I need to disable the printing option in PDF with an owner
password and the printing option cannot be enabled back without using the
original owner password.


Please advise if I am missing anything in my below testing programme.


*import* java.io.File;

*import* org.apache.pdfbox.pdmodel.PDDocument;

*import* org.apache.pdfbox.pdmodel.encryption.AccessPermission;

*import* org.apache.pdfbox.pdmodel.encryption.StandardProtectionPolicy;



*public* *class* TestEncryptPDF {



       *public* *static* *void* main(String[] args) {



              String inputPdfFileName = "D:\\temp\\test-input.pdf";

              String cannotPrintPdfFileName = inputPdfFileName.replace(
".pdf", "-cannotPrint.pdf");

              String canPrintPdfFileName = inputPdfFileName.replace(".pdf",
"-cannPrint.pdf");

              *setPdfPassword*(inputPdfFileName, cannotPrintPdfFileName,
"OwnerPassword1234", *false*);



              *setPdfPassword*(cannotPrintPdfFileName, canPrintPdfFileName,
"BreakingOwnerPassworAndEnablingPrinting", *true*);

       }



       *private* *static* *void* setPdfPassword(String inputPdfFileName,

                     String outputPdfFileName, String ownerPassword,
*boolean* canPrint) {

              *try* {

                     PDDocument pdfDoc = PDDocument.*load*(*new* File(
inputPdfFileName));

                     AccessPermission ap = *new* AccessPermission();

                     ap.setCanPrint(canPrint);

                     ap.setCanAssembleDocument(*false*);

                     ap.setCanExtractContent(*false*);

                     ap.setCanExtractForAccessibility(*false*);

                     ap.setCanFillInForm(*false*);

                     ap.setCanModify(*false*);

                     ap.setCanModifyAnnotations(*false*);

                     ap.setReadOnly();

                     // setting only owner *pwd*

                     StandardProtectionPolicy spp = *new*
StandardProtectionPolicy(

                                  ownerPassword, *null*, ap);

                     spp.setPreferAES(*true*);

                     spp.setEncryptionKeyLength(128);

                     spp.setPermissions(ap);

                     pdfDoc.protect(spp);

                     pdfDoc.save(outputPdfFileName);

                     pdfDoc.close();

              } *catch* (Exception e) {

                     e.printStackTrace();

              }

       }



}

regards

RJC