Bug 2936 - PDF password required, weird encryption info
Summary: PDF password required, weird encryption info
Status: RESOLVED WORKSFORME
Alias: None
Product: poppler
Classification: Unclassified
Component: general (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: high major
Assignee: Kristian Høgsberg
QA Contact:
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2005-04-08 10:46 UTC by Jaakko R
Modified: 2008-03-07 05:47 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:


Attachments

Description Jaakko R 2005-04-08 10:46:24 UTC
# wget
"http://v3.espacenet.com/pdfdoc?DB=EPODOC&IDX=US6289364&F=128&QPN=US6289364&PGN=1"

# evince pdfdoc\?DB\=EPODOC\&IDX\=US6289364\&F\=128\&QPN\=US6289364\&PGN\=1

on console I see:

Error: Weird encryption info
Error: Couldn't read xref table

Window dialog opens: Password required

Same error for xpdf, gpdf (I believe they share the same source).  Works ok with
acroread.

Acroread claims:
User Password: No
Master Password: No
Encryption Level: 40-bit RC4 (Acrobat 3.x, 4.x)

I reconfirmed this bug with evince 0.1.9 and poppler 0.1.2.  I am moving this
bug from evince to poppler, see the discussion in 
http://bugzilla.gnome.org/show_bug.cgi?id=166443
Comment 1 Pablo Rodríguez 2005-07-08 22:06:09 UTC
The same happens with all PDF documents at
http://andreas.schmidhauser.ch/apollo.html. They cannot be opened because the
files are encrypted, but no password is requried.
Comment 2 FreeDesktop Bugzilla Database Corruption Fix User 2005-07-16 14:15:04 UTC
I had a look at this. Appears that the problem is that there is no fileID  
value in the trailer. No idea how to handle that, since the PDF spec appears  
to require this value for the encryption algorithm. 
Comment 3 Fredrik Öhrström 2005-10-10 02:19:26 UTC
I have experience this bug too! However the bug seems to be fixed in:
xpdf version 3.01



Comment 4 Brad Hards 2007-10-27 00:52:35 UTC
The first page shows in kpdf and the poppler test tools for HEAD. Not sure what is going on with the rest of the document.

Jaakko: can you tell us if you are still seeing the original problem?
Comment 5 Benjamin Close 2008-01-11 02:37:07 UTC
Bugzilla Upgrade Mass Bug Change

NEEDSINFO state was removed in Bugzilla 3.x, reopening any bugs previously listed as NEEDSINFO.

  - benjsc
    fd.o Wrangler
Comment 6 Jaakko R 2008-03-07 05:47:43 UTC
Checked with poppler 0.6.2, the original problem is gone.

But if I download the first two pages
# wget
"http://v3.espacenet.com/pdfdoc?DB=EPODOC&IDX=US6289364&F=128&QPN=US6289364&PGN=1"
# wget
"http://v3.espacenet.com/pdfdoc?DB=EPODOC&IDX=US6289364&F=128&QPN=US6289364&PGN=2"
they show fine in acroread 8.1.2, but not in evince 2.20.2.

I think this is what comment #4 referred to.  I would like to have this bug closed and open another one, but I do now know how the pdf feature of splitting a document into many files is called.  Linearized pdf?  PDF reference guide did not quickly shed any light on me on this.


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