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https://issues.apache.org/jira/browse/PDFBOX-2490?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14203433#comment-14203433
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Andreas Lehmkühler commented on PDFBOX-2490:
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I've changed to behaviour or better clarified it, COSDocument#isEncrypted
provides if a pdf is encrypted or not. COSDocument#isDecrypted has to be
called If someone needs to know if an encrypted pdf is already decrypted.
> Return value of COSDocument#isEncrypted is unclear
> --------------------------------------------------
>
> Key: PDFBOX-2490
> URL: https://issues.apache.org/jira/browse/PDFBOX-2490
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing, PDModel
> Affects Versions: 1.8.7, 2.0.0
> Reporter: Andreas Lehmkühler
> Assignee: Andreas Lehmkühler
> Labels: Encryption
> Fix For: 1.8.8, 2.0.0
>
>
> According to the java doc COSDocument#isEncrypted provides if a pdf is
> encrypted or not. But it's not clear what it really means:
> - is the pdf somehow encrypted
> - is an encrypted pdf already decrypted after parsing
> I guess the first case was the origin intention of this method. Although a
> comment in the code indicates that the information is needed within the
> non-sequential parser I can't find any call of COSDocument#isEncrypted
> anywhere in the non-sequential parser.
> I'm going to change the behaviour of isEncrypted so that it follows the
> origin intention and I'll add a new method isDecrypted as well.
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