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From John Milne <JMi...@phlexglobal.com>
Subject RE: Get page count from encrypted document
Date Mon, 23 Jun 2014 09:36:12 GMT
Hi,

Agreed, but there are different levels of security available on a PDF.
Simple security such as preventing changing a document, commenting it, or form field fill
in should not prevent a page count being returned without calling the openProtection() method
first. 

If you can view the document, then the page count should be available. To my mind anyhow.

Regards

John

-----Original Message-----
From: Gilad Denneboom [mailto:gilad.denneboom@gmail.com] 
Sent: 23 June 2014 10:14
To: users@pdfbox.apache.org
Subject: Re: Get page count from encrypted document

The entire point of encryption is to prevent someone without the right knowledge (the password)
from gaining access to the contents of your file, such as the number of pages in it.


On Mon, Jun 23, 2014 at 10:38 AM, John Milne <JMilne@phlexglobal.com> wrote:

> One last question for someone.
> Why do we need to decrypt the PDF to simply get the page count?
>
> Thanks
>
> John
>
> -----Original Message-----
> From: John Milne [mailto:JMilne@phlexglobal.com]
> Sent: 20 June 2014 14:43
> To: users@pdfbox.apache.org
> Subject: RE: Get page count from encrypted document
>
> Thanks Dave,
>
> That appears to do the trick.
>
> Best regards
>
> John
>
> -----Original Message-----
> From: Dave Smith [mailto:dave.smith@candata.com]
> Sent: 20 June 2014 14:09
> To: users@pdfbox.apache.org
> Subject: Re: Get page count from encrypted document
>
> After you load the document
>
> if(document.isEncrypted())
>             {
>                 document.openProtection(new 
> StandardDecryptionMaterial(""));
>             }
>
> In the "" enter the password if required.
>
>
>
>
> On Fri, Jun 20, 2014 at 9:04 AM, Gilad Denneboom < 
> gilad.denneboom@gmail.com>
> wrote:
>
> > What kind of security? If it's a file-open password then you can't 
> > get any information about it (at least in any Adobe apps), until you 
> > provide the password.
> >
> >
> > On Fri, Jun 20, 2014 at 2:39 PM, John Milne <JMilne@phlexglobal.com>
> > wrote:
> >
> > > Hi,
> > >
> > >
> > >
> > > I have a number of PDF’s with various levels of security and need 
> > > to be able to get a page count from them.
> > >
> > > The getNumberOfPages call fails to return a value with a document 
> > > that is secured, while Adobe reader and windows preview are able 
> > > to get the page count.
> > >
> > >
> > >
> > > [image: cid:image001.jpg@01CF8C8B.EAAF6620]
> > >
> > >
> > >
> > > PDDocument doc = PDDocument.load(new File(args[0]));
> > >
> > > int count = doc.getNumberOfPages();
> > >
> > >
> > >
> > > Does anyone have any thoughts as to why and how I can get a page count?
> > >
> > >
> > >
> > > Regards
> > >
> > >
> > >
> > > John
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > [image: Description: Phlex-small-png.png]
> > >
> > > *John Milne*, Analyst Programmer
> > > *T:* +44 (0)1494 720420  *F*: +44 (0)1494 720430
> > >
> > > *E:* jmilne@phlexglobal.com
> > >
> > > *W:*www.phlexglobal.com
> > >
> > >
> > >
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