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https://issues.apache.org/jira/browse/PDFBOX-6042?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18009054#comment-18009054
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Tilman Hausherr commented on PDFBOX-6042:
-----------------------------------------
That one isn't a bug, it is because BC isn't in the classpath, see the
dependencies page:
https://github.com/apache/pdfbox-docs/blob/master/content/3.0/dependencies.md
"Public key encryption/decryption and signatures"
(It has been updated recently to be more clear, because I was contacted about
your problem)
I could add a further error log in the code, but you'll still get the crash.
And even if BC is installed, you'll get a different error: "Provided decryption
material is not compatible with the document - did you pass a null keyStore?"
> NoClassDefFoundError
> --------------------
>
> Key: PDFBOX-6042
> URL: https://issues.apache.org/jira/browse/PDFBOX-6042
> Project: PDFBox
> Issue Type: Bug
> Affects Versions: 4.0.0
> Reporter: David Justamante
> Priority: Minor
> Attachments: example.pdf
>
>
> This issue is being manually filed by the competition organizers. We
> recognize there is a number of AI generated submissions as of late. We have
> gone through the manual process of bug/patch validation to prevent
> unnecessary "noise", respecting maintainers' time.
> This submission is being sent as part of DARPA's AIxCC competition.
> (https://aicyberchallenge.com) This issue was discovered by an autonomous
> Cyber Reasoning System (CRS) and validated by competition engineers.
> We are grateful for your recent updates to the documentation around this
> behavior, and we expect this JIRA issue to be closed as "fixed."
> Nevertheless, we wanted to report this publicly and share a triggering file.
> When using PDFBox alone (without the BouncyCastle dependencies on the
> classpath) simply trying to load a PDF that requires a
> PublicKeySecurityHandler causes a NoClassDefFoundError because of a missing
> BouncyCastle class definition: {{org/bouncycastle/cms/CMSException}}
> Repro code:
> {{PDDocument pdDocument = Loader.load(new File("example.pdf"));}}
> {{}}
> (AIxCC Internal: CHA-1732){{{}{}}}
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