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

Eduardo Sanchez sombragris at sombragris.org
Tue Dec 20 15:00:44 UTC 2016

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 \


Error: Unexpected Exception in open_reader()
Unhandled Java Exception in main():
   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.



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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