Hello,
which tool is prefered to determine the signature validity? I have a signed dynamic form with multiple sign fields. When I open it in Adobe Acrobat 9 Pro on Windows 7, it shows me for the first signature of the document, that "Document has been altered or corrupted since it was signed".
![acrobat_view.jpg acrobat_view.jpg](/t5/image/serverpage/image-id/3005i113DCA97DB8A8AD0/image-size/large?v=v2&px=999)
When I open the same document on another computer in Adobe Reader 9.5.2 on Windows XP, it tells me that "This revision of the document has not been altered".
![reader_view.jpg reader_view.jpg](/t5/image/serverpage/image-id/3006i0C682DA2E5A2D345/image-size/large?v=v2&px=999)
Which one of these should I trust?
Best regards,
Tomas Hansut