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https://issues.apache.org/jira/browse/PDFBOX-4609?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16905111#comment-16905111
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bal edited comment on PDFBOX-4609 at 8/12/19 11:53 AM:
-------------------------------------------------------

hi,

i found the sign() method implementation in the doWriteSignature () method of 
the coswriter class, but this method is not called from saveIncremental, 
instead it calls the write() method of the coswriter class. how  can i call the 
sign() from the coswriter class? please help.


was (Author: bal@123):
hi,

i found the sign() method implementation in the doWriteSignature () method of 
the coswriter class, but this method is not called from saveIncremental, 
instead it calls the write() method of the coswriter class. how  can i call the 
sign() form the coswriter? please help.

> At least  one signature is invalid
> ----------------------------------
>
>                 Key: PDFBOX-4609
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4609
>             Project: PDFBox
>          Issue Type: Wish
>          Components: .NET
>    Affects Versions: 1.8.15
>            Reporter: bal
>            Priority: Major
>         Attachments: Debug.txt, keystore.p12
>
>
> I am getting signature is  invalid  error in the signature panel of pdf after 
> pkcs 7 signature insertion. I can see the name of the signer with the signed 
> by in signature panel. I am not able to find out disallowed changes pdfbox 
> does resulting into invalid pdf by acrobat reader.   Is it possible to 
> validate the pdf with pdfbox? Thanks in advance. 



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