[jira] [Created] (PDFBOX-2347) NPE while creating security handler for decryption

["Tilman Hausherr (JIRA)" <ji...@apache.org>]

Tilman Hausherr created PDFBOX-2347:
---------------------------------------

             Summary: 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
             Fix For: 1.8.7, 2.0.0


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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