[Slackbuilds-users] BUG: pdftk decrypt doesn't work

[Eduardo Sanchez]

Hi Greg:

1. I don't have an idea of what was used to encrypt the pdf. It was a
book downloaded from the 'net. However, it was decrypted without a
hitch by qpdf.

2. pdftk was compiled on current. I don't have a stable box to compare.

Thanks for the update. Regards,


Eduardo


 En respuesta al mensaje de "Greg' Ar Tourter"
<artourter at gmail.com> el Tue, 20 Dec 2016 16:46:40 +0000

> Hi Eduardo,
> 
> I have tried on a pdf that I encrypted using pdftk first using the
> default 128bit encryption, and decryption went without errors. do you
> know what was used to encrypt your pdf in the first place and with
> what settings?
> 
> Another thing that comes to mind is was pdftk compiled on current or
> stable (before you upgraded to current) if the latter, you might want
> to recompile it to see if the problem still occurs
> 
> Hope this helps
> 
> Greg
> 
> On 20 December 2016 at 15:00, Eduardo Sanchez
> <sombragris at sombragris.org> wrote:
> > This was observed in Slackware64-current but it could well be the
> > case with Slackware-14.2.
> >
> > Using the latest pdftk from SBo, an attempt to decrypt a PDF fails:
> >
> > Command Line:
> >
> > $ pdftk secured.pdf input_pw mypasswd output \
> > unsecured.pdf
> >
> > Output:
> >
> > Error: Unexpected Exception in open_reader()
> > Unhandled Java Exception in main():
> > java.lang.NullPointerException
> >    at gnu.gcj.runtime.NameFinder.lookup(libgcj.so.16)
> >    at java.lang.Throwable.getStackTrace(libgcj.so.16)
> >    at java.lang.Throwable.stackTraceString(libgcj.so.16)
> >    at java.lang.Throwable.printStackTrace(libgcj.so.16)
> >    at java.lang.Throwable.printStackTrace(libgcj.so.16)
> >
> >
> > Thankfully I was able to decrypt the PDF afterwards using
> > Slackware's stock qpdf, but I nevertheless wanted to report this in
> > case you guys could find a workaround.
> >
> > Regards,
> >
> >
> > Eduardo
> >
> > --
> > Eduardo Sánchez Gauto, Abog., Th.M.
> > Abogado - Traductor Público Matriculado Inglés - Español
> > Web: http://sombragris.org - Blog: http://shadow.sombragris.org
> > TW: @thegreyshadow - FB: /thegreyshadow
> > Teléfono: (0991) 755-355 - Asunción, Paraguay
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-- 
Eduardo Sánchez Gauto, Abog., Th.M.
Abogado - Traductor Público Matriculado Inglés - Español
Web: http://sombragris.org - Blog: http://shadow.sombragris.org
TW: @thegreyshadow - FB: /thegreyshadow
Teléfono: (0991) 755-355 - Asunción, Paraguay
==================================================================