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https://issues.apache.org/jira/browse/PDFBOX-2447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14181486#comment-14181486
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Tilman Hausherr commented on PDFBOX-2447:
-----------------------------------------
I'm afraid that this won't work, what if the user did really close the
document? I didn't test it, but from looking at the source code, I'd expect an
NPE.
> "Cannot save a document which has been closed" when encrypting
> --------------------------------------------------------------
>
> Key: PDFBOX-2447
> URL: https://issues.apache.org/jira/browse/PDFBOX-2447
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 2.0.0
> Environment: java7 deb7
> Reporter: Ralf Hauser
> Attachments: patch2447.txt
>
>
> InputStream content = ...;
> int keyLength = 256;
> AccessPermission ap = new AccessPermission();
> StandardProtectionPolicy spp = new
> StandardProtectionPolicy(
> symmPw, symmPw, ap);
> spp.setEncryptionKeyLength(keyLength);
> document.protect(spp);
> ByteArrayOutputStream baos = new ByteArrayOutputStream();
> document.save(baos);
> in the save() the above mentioned exception is thrown (wasn't with the
> 2013-11 snapshot)
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