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How to edit PDFs with owner password set? https://forum.pdfsharp.net/viewtopic.php?f=2&t=3352 |
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Author: | adabada [ Fri May 06, 2016 7:57 pm ] |
Post subject: | How to edit PDFs with owner password set? |
Howdy, I have a fillable, editable PDF that has an owner password. I can fill it in Adobe Reader and export it, and I can also use iTextSharp with unethicalReading set to true and then fill the PDF just fine, but with PDFsharp I always get the "we don't support this encryption" message. Is there a way to edit/fill PDFs that have the owner's password set? Thanks. |
Author: | TH-Soft [ Sat May 07, 2016 7:28 am ] |
Post subject: | Re: How to edit PDFs with owner password set? |
Hi! adabada wrote: Is there a way to edit/fill PDFs that have the owner's password set? Yes - if the encryption scheme is supported.
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Author: | kevin.gregg [ Tue Jan 10, 2017 7:48 pm ] |
Post subject: | Re: How to edit PDFs with owner password set? |
I get a different error in this same use case. I get "Header checksum illegal". I don't want to edit the document, just fill the form via our application. The document does not have a user password, just an owner password. This prevents PdfSharp from even opening the document so I cannot fill the form. I have tried all the PdfDocumentOpenModes and get the same error on the line executing PdfReader.Open. |
Author: | Thomas Hoevel [ Wed Jan 11, 2017 8:59 am ] |
Post subject: | Re: How to edit PDFs with owner password set? |
kevin.gregg wrote: I get a different error in this same use case. I get "Header checksum illegal". Different error, different problem.No simple solution yet, but maybe a workaround. See also: viewtopic.php?f=3&t=3276&hilit=header+checksum#p9700 |
Author: | rogdo [ Sat Apr 14, 2018 8:52 am ] |
Post subject: | Re: How to edit PDFs with owner password set? |
Hi, I believe I have a similar issue. I cannot read a PDF (PDFREADER returns blank pages), nor to draw on it. the URL to the PDF: http://mayafiles.tase.co.il/RPdf/556001 ... 907-00.pdf when trying to draw i get - PdfSharp.SharpZipLib.SharpZipBaseException: 'Header checksum illegal' when trying to save, i get - cannot save a pdf with no pages, although the pagecount is 2. will glad to know if there is a solution. many thanks in advance. |
Author: | () => true [ Sat Apr 14, 2018 9:36 am ] |
Post subject: | Re: How to edit PDFs with owner password set? |
rogdo wrote: Hi, I believe I have a similar issue. I cannot read a PDF (PDFREADER returns blank pages), nor to draw on it. Different error, different problem.No simple solution yet, but maybe a workaround. See also: viewtopic.php?f=3&t=3276&hilit=header+checksum#p9700 viewtopic.php?f=2&t=832 |
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