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https://issues.apache.org/jira/browse/PDFBOX-2347?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Andreas Lehmkühler closed PDFBOX-2347.
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> NPE while creating security handler for decryption
> --------------------------------------------------
>
> Key: PDFBOX-2347
> URL: https://issues.apache.org/jira/browse/PDFBOX-2347
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 1.8.6, 1.8.7, 2.0.0
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Labels: Encryption
> Fix For: 1.8.7, 2.0.0
>
> Attachments: PDFBOX-2347-263071.pdf
>
>
> The attached file has a NPE with the non sequential parser only:
> {code}
> Exception in thread "main" java.io.IOException: Error (NullPointerException)
> while creating security handler for decryption
> at
> org.apache.pdfbox.pdfparser.NonSequentialPDFParser.initialParse(NonSe
> quentialPDFParser.java:493)
> at
> org.apache.pdfbox.pdfparser.NonSequentialPDFParser.parse(NonSequentialPDFParser.java:794)
> at
> org.apache.pdfbox.pdmodel.PDDocument.loadNonSeq(PDDocument.java:1156)
> at
> org.apache.pdfbox.pdmodel.PDDocument.loadNonSeq(PDDocument.java:1139)
> at org.apache.pdfbox.tools.PDFToImage.main(PDFToImage.java:197)
> at org.apache.pdfbox.tools.PDFBox.main(PDFBox.java:89)
> Caused by: java.lang.NullPointerException
> at
> org.apache.pdfbox.pdmodel.encryption.PDEncryption.getFilter(PDEncrypt
> ion.java:159)
> at
> org.apache.pdfbox.pdmodel.encryption.PDEncryption.<init>(PDEncryption.java:96)
> at
> org.apache.pdfbox.pdfparser.NonSequentialPDFParser.initialParse(NonSe
> quentialPDFParser.java:464)
> {code}
> The file has this:
> {code}
> trailer
> <<
> /Size
> 53
> /Info
> 29 0 R
> /Encrypt
> null
> /Root
> 35 0 R
> /Prev
> 256729
> /ID
> [
> <f571e5c0c658cb76cfe7ad0662f8f6a1>
> <1c11ae9224c83622f7682d9e00bd2581>
> ]
> >>
> {code}
> so the encryption item is COSNull which is not the same as "null" when using
> getItem(). So the solution is to use getDictionaryObject() instead, because
> it checks for COSNull. This method is already used elsewhere in PDFBox to get
> /Encrypt.
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