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147079 | Aug 31,2019 02:34 AM UTC | Sep 4,2019 01:45 PM UTC | WinForms | 4 |
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Tags: PDF |
Response |
Query |
But, when I try to add another valid signature, I got error 0x80070057 = the document may contain at most one author signature.
I'm following the code described at https://help.syncfusion.com/file-formats/pdf/working-with-digitalsignature?cs-save-lang=1&cs-lang=vb#signing-an-existing-document
The first signature has the following propterties:
signature.TimeStampServer = New TimeStampServer(New Uri("http://rfc3161timestamp.globalsign.com/advanced"))
signature.EnableValidationAppearance = False
signature.EnableLtv = True
signature.Certificated = True
signature.DocumentPermissions = PdfCertificationFlags.AllowFormFill
Everything runs OK until the "Save" command, which raises the above error. |
Could you please provide us the stack trace of the exception or error you got along with the PDF in which the error occurs so that we can analyze and provide you exact solution. |
If the document is virgin (not signed before) I set "signature.Certified = true" and in opposite (the document is already signed) I set "signature.Certified = false" - and at this point the error raises.
I mean, we cannot set "Certified=false" in an already signed document - we need only to discard the property entirelly.
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We are analyzing this behavior we will let you know more about this on 04-Sep-19. |
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