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https://issues.apache.org/jira/browse/PDFBOX-4556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16878611#comment-16878611
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bal commented on PDFBOX-4556:
-----------------------------

hi, i have tried with the different color combination but i am not able to see 
any appearances for the contents(i.e signed by , name ) but i am able to see 
the image . These values are present when i open PDF it with the editor.  i am 
getting the invalid pdf when i am attaching the pkcs 7 signature. i have  
returned the signature bytes of the pkcs7 signature  from the sign method.  
Getting the errors ' signature is invalid ' and second error is 'document has 
been altered or corrupted since it was signed.'  i can't upload the pdf ... 
please help... thanks in advance.

> how the visual representation of the signature is achieved  
> ------------------------------------------------------------
>
>                 Key: PDFBOX-4556
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4556
>             Project: PDFBox
>          Issue Type: Wish
>          Components: .NET
>    Affects Versions: 1.8.16
>            Reporter: bal
>            Priority: Major
>         Attachments: as_TobeSigned.pdf, pdfImage-modified-by-tilman.pdf, 
> pdfImage1.pdf, pdfImage1_modified_by_Tilman2.pdf, png.png
>
>




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