Tilman Hausherr created PDFBOX-6244:
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             Summary: 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


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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