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Hi all !
Sorry if here is not the proper place for my question. If it is the case, can anyone inform the right place ?
Well, I'm trying to build a tool to sign PDFs by incremental update using Delphi [] .
I'm newbie in PDF structure and short deadline made me desperate and maybe a little inattentive.
After 2 months of hard fighting I managed to get the Acrobat Reader know that my PDF (originally created by a java tool called SignServer) has a signature and recognize the certificate but it says that the certification is invalid because "the byte range is invalid".
I analysed the PDF in a hex editor and the signature byte range as well any other object offsets appears correct.
My test PDF is here: https://drive.google.com/open?id=0B0KKmaB-a0Z4SDZfNXdZRWZEem8
Can anyone to indicate me what is wrong with that PDF ?
Thanks a lot for any help !
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Thank you very much !
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You might check PDF Forum and Community
https://forums.adobe.com/community/acrobat/security_%26_digital_signatures
If you are running out of time I suggest to google for ready SDK or tool to batch doing this task - it very affordable
Cheers
Adam
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Thank you for the sugestions !