[PDFBOX-3699] Regression on signature with certification flag.

• Type: Bug
• Status: Open
• Priority: Blocker
• Resolution: Unresolved
• Affects Version/s: 2.0.2, 2.0.3, 2.0.4
• Component/s: Signing
• Assignee: Unassigned
• Reporter: Marco Monacelli
• Created: 21/Feb/17 17:02
• Updated: 08/Mar/17 19:42

Description

Hello,
I got some problems signing a certified pdf with a signature with apparence: after the signature is applied the previous certification is reported as corrupted by Acrobat Reader. If I apply an invisible signature the issue doesn't happen.

I have done a regression analysis using the same code

• with pdfbox 2.0.0 and 2.0.1, the signature is not shown on the document but the certification is still valid
• with earlier versions, the signature is shown on the document but the certification is broken

The sample certified pdf (original_file.pdf) is in attachment.

Finally this problem could be related to these tickets:
1- PDFBOX-2816 (PDFBox makes disallowed changes when signing a signed document)
2- PDFBOX-45 (Support incremental save)

I tested my code with the test case file in 1 (acrosigned.pdf), and it works well.