4 Aug
2021
4 Aug
'21
8:58 a.m.
Hi all!
Giving this PDF https://www.farnell.com/datasheets/2304760.pdf kpdf requires a password to
open it while firefox does not.
Anybody knows the reason for this?
Nik
--
Please do not email me anything that you are not comfortable also sharing with the NSA,
CIA ...
4 Aug
4 Aug
9:39 a.m.
On Wednesday 04 August 2021 01:58:22 Dr. Nikolaus Klepp wrote:
Hi all!
Giving this PDF https://www.farnell.com/datasheets/2304760.pdf kpdf
requires a password to open it while firefox does not.
Anybody knows the reason for this?
Nik
Well, I can confirm that kpdf will not open this document on my machine. I did
not get asked for a password, but then I had a ton of other pdf documents
open, so that probably interferes with some functions.
I haven't tried to open it with any other programs yet, but it occurs to me
that maybe you can open it in another pdf program (e.g., maybe pdftk or
xpdf?), then save it under a different file name. I don't know if Firefox can
do that.
Did you take care to disable the DRM settings? That doesn't seem like it would
ordinarily have anything to do with passwords, but it makes no sense that one
program would open it but another wants a password.
Bill
P.S. Breaking news: As I was clicking to send this email, I got a notification
that kpdf wanted permission to access my tdewallet ... which does sound very
suspicious. Why would kpdf need access to the passwords in my wallet?
10:04 a.m.
Dr. Nikolaus Klepp wrote:
Hi all!
Giving this PDF https://www.farnell.com/datasheets/2304760.pdf kpdf
requires a password to open it while firefox does not.
Anybody knows the reason for this?
Nik
confirmed
Here kpdf requested access to kwallet - I rejected and it asked for passwd.
FF is not asking for passwd
perhaps strace to see what is happening?
1:09 p.m.
On Wed, 04 Aug 2021 12:04:16 +0200
deloptes <emanoil.kotsev(a)deloptes.org> wrote:
Dr. Nikolaus Klepp wrote:
For what it's worth, the file shows as encrypted (and slightly broken):
~ $ pdfinfo 2304760.pdf
Internal Error: xref num 27 not found but needed, try to reconstruct<0a>
Tagged: no
UserProperties: no
Suspects: no
Form: none
JavaScript: no
Pages: 8
Encrypted: yes (print:yes copy:no change:no addNotes:yes algorithm:AES-256)
Page size: 612 x 792 pts (letter)
Page rot: 0
File size: 1626771 bytes
Optimized: no
PDF version: 1.4
It might be that the original creators of kpdf didn't anticipate the possible
existence of encrypted files that weren't password-locked. Or it could be that
the file breakage is causing other problems.
E. Liddell
Hi all!
Giving this PDF https://www.farnell.com/datasheets/2304760.pdf kpdf
requires a password to open it while firefox does not.
Anybody knows the reason for this?
Nik
confirmed
Here kpdf requested access to kwallet - I rejected and it asked for passwd.
FF is not asking for passwd
perhaps strace to see what is happening?
3 p.m.
Anno domini 2021 Wed, 4 Aug 09:09:54 -0400
E. Liddell scripsit:
On Wed, 04 Aug 2021 12:04:16 +0200
deloptes <emanoil.kotsev(a)deloptes.org> wrote:
Thanks for the hint, now I kind of solved it by uploading the PDF to https://smallpdf.com
, let it remove the password and saving the result :)
But what I still don't understand: why was the preview in konqueror showing the first
page of the pdf? Does KPDF not use the same component to as konqueror?
Nik
Dr. Nikolaus Klepp wrote:
For what it's worth, the file shows as encrypted (and slightly broken):
~ $ pdfinfo 2304760.pdf
Internal Error: xref num 27 not found but needed, try to reconstruct<0a>
Tagged: no
UserProperties: no
Suspects: no
Form: none
JavaScript: no
Pages: 8
Encrypted: yes (print:yes copy:no change:no addNotes:yes algorithm:AES-256)
Page size: 612 x 792 pts (letter)
Page rot: 0
File size: 1626771 bytes
Optimized: no
PDF version: 1.4
It might be that the original creators of kpdf didn't anticipate the possible
existence of encrypted files that weren't password-locked. Or it could be that
the file breakage is causing other problems. Hi all!
Giving this PDF https://www.farnell.com/datasheets/2304760.pdf kpdf
requires a password to open it while firefox does not.
Anybody knows the reason for this?
Nik
confirmed
Here kpdf requested access to kwallet - I rejected and it asked for passwd.
FF is not asking for passwd
perhaps strace to see what is happening?
E. Liddell
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--
Please do not email me anything that you are not comfortable also sharing with the NSA,
CIA ...
4:10 p.m.
Dne st 4. srpna 2021 Dr. Nikolaus Klepp napsal(a):
Anno domini 2021 Wed, 4 Aug 09:09:54 -0400
E. Liddell scripsit:
If I remember correctly, poppler is used to display thumbnails, while KPDF
is based on XPDF.
On Wed, 04 Aug 2021 12:04:16 +0200
deloptes <emanoil.kotsev(a)deloptes.org> wrote:
Thanks for the hint, now I kind of solved it by uploading the PDF to
https://smallpdf.com , let it remove the password and saving the result
:)
But what I still don't understand: why was the preview in konqueror
showing the first page of the pdf? Does KPDF not use the same component
to as konqueror?
Nik
Dr. Nikolaus Klepp wrote:
For what it's worth, the file shows as encrypted (and slightly
broken):
~ $ pdfinfo 2304760.pdf
Internal Error: xref num 27 not found but needed, try to
reconstruct<0a> Tagged: no
UserProperties: no
Suspects: no
Form: none
JavaScript: no
Pages: 8
Encrypted: yes (print:yes copy:no change:no addNotes:yes
algorithm:AES-256) Page size: 612 x 792 pts (letter)
Page rot: 0
File size: 1626771 bytes
Optimized: no
PDF version: 1.4
It might be that the original creators of kpdf didn't anticipate the
possible existence of encrypted files that weren't password-locked.
Or it could be that the file breakage is causing other problems. Hi all!
Giving this PDF https://www.farnell.com/datasheets/2304760.pdf
kpdf requires a password to open it while firefox does not.
Anybody knows the reason for this?
Nik
confirmed
Here kpdf requested access to kwallet - I rejected and it asked for
passwd. FF is not asking for passwd
perhaps strace to see what is happening? > E. Liddell
> ____________________________________________________
Cheers
--
Slávek
4:23 p.m.
On Wed, 4 Aug 2021 17:00:00 +0200
"Dr. Nikolaus Klepp" <office(a)klepp.biz> wrote:
Anno domini 2021 Wed, 4 Aug 09:09:54 -0400
E. Liddell scripsit:
No clue. I don't think the encryption/password system for PDFs is very strong,
though.
Poppler (the package that contains the pdfinfo command I used) can break it in order
to perform PDF conversions (without knowing the password), so other packages may
be able to do so as well.
E. Liddell
On Wed, 04 Aug 2021 12:04:16 +0200
deloptes <emanoil.kotsev(a)deloptes.org> wrote:
Thanks for the hint, now I kind of solved it by uploading the PDF to https://smallpdf.com
, let it remove the password and saving the result :)
But what I still don't understand: why was the preview in konqueror showing the first
page of the pdf? Does KPDF not use the same component to as konqueror? Dr. Nikolaus Klepp wrote:
For what it's worth, the file shows as encrypted (and slightly broken):
~ $ pdfinfo 2304760.pdf
Internal Error: xref num 27 not found but needed, try to reconstruct<0a>
Tagged: no
UserProperties: no
Suspects: no
Form: none
JavaScript: no
Pages: 8
Encrypted: yes (print:yes copy:no change:no addNotes:yes algorithm:AES-256)
Page size: 612 x 792 pts (letter)
Page rot: 0
File size: 1626771 bytes
Optimized: no
PDF version: 1.4
It might be that the original creators of kpdf didn't anticipate the possible
existence of encrypted files that weren't password-locked. Or it could be that
the file breakage is causing other problems. Hi all!
Giving this PDF https://www.farnell.com/datasheets/2304760.pdf kpdf
requires a password to open it while firefox does not.
Anybody knows the reason for this?
Nik
confirmed
Here kpdf requested access to kwallet - I rejected and it asked for passwd.
FF is not asking for passwd
perhaps strace to see what is happening?
1002
days inactive
1002
days old
6 comments
5 participants
participants (5)
-
deloptes -
Dr. Nikolaus Klepp -
E. Liddell -
Slávek Banko -
William Morder