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PDF encryption and password

Support for GdViewer OCX and GdViewer Pro ActiveX/SDK.

PDF encryption and password

Postby Rocky on Thu Sep 18, 2008 12:05 am

I have three issues.

a) a PDF has an open password, and I encrypted compatible with Acrobat v5.
When I display that, I get the status PdfPasswordNeeded
But if I know the password, is there a way to provide it programmatically so that I can view the pdf with the viewer ?

b) a PDF has an open password, and I encrypted compatible with Acrobat 7 and later.
When I display that, I get the status PdfCanNotBeDecrypted.

any plan to support PDF encrypted compatible with Acrobat 7 and later ?

c) I have a pdf that I got on the web, and that I can open with Acrobat Reader.
I know that something is probably wrong with this pdf, since I have an application that generates a png out of the first page, and it takes much more time then normal to achieve that on that sample

But when I try to open that pdf with the viewer, it crashes, and it is impossible to view another document after that. I'm using vb.net
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Rocky
 
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Re: PDF encryption and password

Postby Loïc on Thu Sep 18, 2008 3:58 pm

Hi,

a) a PDF has an open password, and I encrypted compatible with Acrobat v5.
When I display that, I get the status PdfPasswordNeeded
But if I know the password, is there a way to provide it programmatically so that I can view the pdf with the viewer ?


Yes you can. You need to use the DisplayFromPdfFile() method. This method has an optional parameter which allows you to specify the PDF password.

b) a PDF has an open password, and I encrypted compatible with Acrobat 7 and later.
When I display that, I get the status PdfCanNotBeDecrypted.

any plan to support PDF encrypted compatible with Acrobat 7 and later ?


This feature is not yet available but are into our RoadMap. I think it will be available within few months.


c) I have a pdf that I got on the web, and that I can open with Acrobat Reader.
I know that something is probably wrong with this pdf, since I have an application that generates a png out of the first page, and it takes much more time then normal to achieve that on that sample

But when I try to open that pdf with the viewer, it crashes, and it is impossible to view another document after that. I'm using vb.net


I was able to open this file with the next release of the viewer (not yet available) which contains PDF viewing improvements. This release will be available within 3 or 4 days.

Best regards,

Loïc Carrère
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Loïc
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Location: France

Re: PDF encryption and password

Postby Loïc on Sun Oct 12, 2008 1:34 pm

Hi,

PDF encryption compatible with Acrobat 7 and later are now available.

Best regards,

Loïc
User avatar
Loïc
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Posts: 1350
Joined: Tue Oct 17, 2006 11:48 pm
Location: France


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