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https://issues.apache.org/jira/browse/PDFBOX-5144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17312152#comment-17312152
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Michael Klink commented on PDFBOX-5144:
---------------------------------------
Which Adobe Acrobat version are you using? If you are using an old one, please
be aware that the AES 256 PDF encryption used here has been added to the PDF
specification in 2017.
> Unable to combine file(s) in abode acrobat reader for pdfbox generated pdf
> --------------------------------------------------------------------------
>
> Key: PDFBOX-5144
> URL: https://issues.apache.org/jira/browse/PDFBOX-5144
> Project: PDFBox
> Issue Type: Task
> Reporter: Datta
> Priority: Blocker
> Attachments: CarePlanSummary_123_08272020 (1).pdf,
> CarePlanSummary_373539_03192021 (2).pdf, CarePlanSummary_373539_03192021
> (2).pdf, CarePlanSummary_373539_03192021 (3).pdf,
> CarePlanSummary_373539_03192021 (3).pdf, CarePlanSummary_48384_05182020
> (3).pdf
>
>
> Hi
> One of our client is stuck with an problem. PDF(s) generated are not able
> combine file(s) in adobe.Ex;- pdf1 and pdf2 are generated and when we try to
> combine file(s)(Adobe acrobat reader) it is giving password protected dialog
> box. After entering owner password it is not working.
> As per code
> *public* StandardProtectionPolicy getDefaultProtectionPolicy() {
> *final* *int* keyLength = 256;
>
> *final* AccessPermission accessPermission = *new* AccessPermission();
> // disable printing, everything else is allowed
> accessPermission.setCanPrint(*true*);
> accessPermission.setCanAssembleDocument(*false*);
> accessPermission.setCanExtractContent(*false*);
> accessPermission.setCanModify(*false*);
> accessPermission.setCanModifyAnnotations(*false*);
> accessPermission.setCanExtractForAccessibility(*true*);
> /**
> * accessPermission.setReadOnly();
> */
> *final* StandardProtectionPolicy policy = *new*
> StandardProtectionPolicy("XYZ",
> "", accessPermission);
> policy.setEncryptionKeyLength(keyLength);
> policy.setPreferAES(*true*);
> policy.setPermissions(accessPermission);
> *return* policy;
> }
> Just want to know the problem is due to Access permission?
> Also any alternate options to unblock to combine file(s).
> Much appreciated if I get solution on the same.
> Thanks
> Datta
> !Screenshot 2021-03-30 at 10.46.59 AM.png!
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