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Posted to dev@pdfbox.apache.org by "Michael Klink (Jira)" <ji...@apache.org> on 2021/02/22 13:49:00 UTC
[jira] [Commented] (PDFBOX-5105) IllegalArgumentException in
computeEncryptedKeyRev56
[ https://issues.apache.org/jira/browse/PDFBOX-5105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17288385#comment-17288385 ]
Michael Klink commented on PDFBOX-5105:
---------------------------------------
Adobe Reader displays only an empty page and broken comments, and offers to save a "repaired" PDF.
Looking at the PDF the cross references are mostly incorrect, the table position is incorrect, ... that PDF is broken.
Probably one could replace the {{IllegalArgumentException}} by a {{BrokenPdfException}}.
> IllegalArgumentException in computeEncryptedKeyRev56
> ----------------------------------------------------
>
> Key: PDFBOX-5105
> URL: https://issues.apache.org/jira/browse/PDFBOX-5105
> Project: PDFBox
> Issue Type: Bug
> Reporter: Fabian Meumertzheim
> Priority: Minor
> Attachments: crash-1db33f5d58786db4ab9f87b8334987127f26aad9.pdf
>
>
> The attached PDF generates the following stack trace when loaded via Loader.loadPDF (using current Git revision 877fe27feaa36e7d24119b053ef41c4247f0691d):
> java.lang.IllegalArgumentException: Null input buffer
> at java.base/javax.crypto.Cipher.doFinal(Cipher.java:2201)
> at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.computeEncryptedKeyRev56(StandardSecurityHandler.java:751)
> at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.computeEncryptedKey(StandardSecurityHandler.java:658)
> at org.apache.pdfbox.pdmodel.encryption.StandardSecurityHandler.prepareForDecryption(StandardSecurityHandler.java:210)
> at org.apache.pdfbox.pdfparser.COSParser.prepareDecryption(COSParser.java:2522)
> at org.apache.pdfbox.pdfparser.COSParser.rebuildTrailer(COSParser.java:1885)
> at org.apache.pdfbox.pdfparser.COSParser.retrieveTrailer(COSParser.java:263)
> at org.apache.pdfbox.pdfparser.PDFParser.initialParse(PDFParser.java:127)
> at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:180)
> at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:154)
> at org.apache.pdfbox.Loader.loadPDF(Loader.java:204)
> at com.example.PdfBoxFuzzer.fuzzerTestOneInput(PdfBoxFuzzer.java:31)
> While the PDF is clearly broken, the type of thrown exception is unexpected (not an IOException).
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