Claudio Tortorelli created PDFBOX-4261:
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Summary: Invalidated signature signing pdf twice
Key: PDFBOX-4261
URL: https://issues.apache.org/jira/browse/PDFBOX-4261
Project: PDFBox
Issue Type: Bug
Components: Signing
Affects Versions: 1.8.15
Reporter: Claudio Tortorelli
Attachments: issue_data.zip
A customer sent us a pdf that has this problem: when it is signed twice by
*pdfbox 1.8.x* the second signature invalidates the first one.
If we apply the same procedure using *pdfbox 2.0.x* the problem doesn't occur,
but the customer required java 1.5 so we can't switch to the new version in
this case.
For +privacy purposes+ we had anonymized the original PDF file by editing 3
stream inside the pdf, without altering the original structure. So the file
"92752146_noSign_anonymous.pdf" you can find in attachement has not the
original text/image streams, but reproduces the problem as the original one.
Thank you in advance
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