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https://issues.apache.org/jira/browse/PDFBOX-6244?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18108277#comment-18108277
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Maruan Sahyoun commented on PDFBOX-6244:
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website updated

> Clarify that parsing doesn't check signatures
> ---------------------------------------------
>
>                 Key: PDFBOX-6244
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-6244
>             Project: PDFBox
>          Issue Type: Improvement
>          Components: Documentation
>            Reporter: Tilman Hausherr
>            Priority: Minor
>
> Clarify that parsing doesn't check whether any signatures are valid, and that 
> loading a manipulated / "updated" PDF will not fail parsing. This applies to 
> certification constraints as well. This behavior is not a security flaw, it's 
> a missing feature. The ShowSignature example offers a limited signature 
> check. The gold standard is Adobe Reader.



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