Public bug reported:
When opening a file with AESV3 256 encryption evince repeatedly prompts
for a password interactively and fails to render the document.
To recreate:
1. Encrypt a PDF with qpdf:
$ qpdf --version
qpdf version 4.2.0
Copyright (c) 2005-2013 Jay Berkenbilt
This software may be distributed under the terms of version 2 of the
Artistic License which may be found in the source distribution. It is
provided "as is" without express or implied warranty.
$ qpdf --encrypt "wibble" "wobble" 256 -- plain.pdf encrypted.pdf
$ egrep -a AES encrypted.pdf
<< /CF << /StdCF << /AuthEvent /DocOpen /CFM /AESV3 /Length 32 >> >> /Filter
/Standard /Length 256 ...
2. Check it opens with Adobe Acrobat
3. Attempt to open with evince:
$ evince --version
GNOME Document Viewer 3.10.0
$ evince encrypted.pdf
(evince:17902): EvinceDocument-CRITICAL **: ev_document_get_n_pages: assertion
'EV_IS_DOCUMENT (document)' failed
Syntax Error: Invalid encryption key length
Command Line Error: Incorrect password
Syntax Error: Invalid encryption key length
Command Line Error: Incorrect password
(evince:17902): Gtk-CRITICAL **: gtk_widget_get_toplevel: assertion
'GTK_IS_WIDGET (widget)' failed
** Affects: evince (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1293282
Title:
evince cannot open pdf with AESV3 256 encryption
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