Luca Battistelli created PDFBOX-3114:
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             Summary: Visible signatures in different pages
                 Key: PDFBOX-3114
                 URL: https://issues.apache.org/jira/browse/PDFBOX-3114
             Project: PDFBox
          Issue Type: Bug
          Components: Signing
    Affects Versions: 2.0.0
         Environment: Compiled with jdk1.8.0_60, tested with Adobe Acrobat XI 
Pro v.11.0.13
            Reporter: Luca Battistelli
            Priority: Blocker


I tried to make two visible signatures in a 2-pages pdf file using 
pdfbox-2.0.0-RC1.

I followed the example in SVN directory
https://svn.apache.org/viewvc/pdfbox/trunk/examples/src/main/java/org/apache/pdfbox/examples/signature/
I have just modified CreateVisibleSignature class customizing the input 
parameters and the page to sign.

If both the signatures are made in the same page, no error occurs. If 
signatures are made in different pages (e.g. signature 1 in page 1 and 
signature 2 in page 2), when I open the pdf file with Adobe Acrobat XI Pro 
(v.11.0.13) it tells that signature 1 is not valid.

The URL below refers to the source/resourse zip file. It contains:
- test.docx: 2-pages test document generated with Microsoft Office Professional 
Plus 2013
- test1.pdf: pdf version that generates error (created with Word by selecting 
"Save as Adobe PDF" option)
- test1_*.pdf: signed pdf files with error
- test2.pdf: pdf version that generates no error (created with Word by 
selecting "Save as" option and then "*.PDF")
- test2_*.pdf: signed pdf files with no error
- CreateVisibleSignature.java: customized source code 
- stamp.png: signature image
- test.p12: key store (password 12345)



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