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Old 06-13-2010, 10:08 AM   #1
tetrachroma
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FileOpen Plugin DRM for PDF circumvented

More information on my blog

http://tetrachroma.wordpress.com

Last edited by tetrachroma; 07-05-2010 at 12:35 PM.
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Old 06-21-2010, 09:44 AM   #2
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Thank you! Finally I'll be able to *buy* and read some stuff that was unusable for me before.
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Old 11-17-2010, 02:53 PM   #3
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Used ineptpdf8.4.48 for PDF-file with Adobe LiveCycle Policy (Adobe.APS[adbe.pdrl.v0]) 128-bit security v.4 protection without password or key file input. Got the error: Cannot find principal key for this pdf. Does anyone know the solution?
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Old 11-19-2010, 07:33 AM   #4
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You need a principalkey for every publisher (which you can sniff out of the network connection). Check out the information in the comments on my blog.
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Old 11-24-2010, 11:50 AM   #5
globus999
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Sniffer?

Quote:
Originally Posted by tetrachroma View Post
You need a principalkey for every publisher (which you can sniff out of the network connection). Check out the information in the comments on my blog.
Hi,
As I am not a person with a medium (or a low) know-how with regards to Apache, I am stuck without a principal key. However, what I can do is to run a sniffer such a WireShark. Using this method, would I be able to pick-up the PrincipalKey from the logs? Or will the key be encrypted itself? I am asking since I have dawsonera books but no key … ;-/ Thank you kindly.
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Old 12-21-2010, 06:41 PM   #6
Lost1
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Yesterday I've successfully decrypted several PDFs encrypted with Policy Server.
I obtained the PDFs from our online library.
First ineptkey couldn't find the key, but after installing ADE ineptkey automatically found one although ADE couldn't load the PDFs.
Today I wanted to decrypt other PDFs from the same online library, but it doesn't work anymore. I get the message "Offlinekey cannot be decrypted".
I'll try to sniff the PrincipalKey with Wireshark. Maybe I can find it.
Thanks for your scripts!
They worked great yesterday for me!
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Old 12-25-2010, 04:57 AM   #7
tetrachroma
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Quote:
Originally Posted by Lost1 View Post
Yesterday I've successfully decrypted several PDFs encrypted with Policy Server.
I obtained the PDFs from our online library.
First ineptkey couldn't find the key, but after installing ADE ineptkey automatically found one although ADE couldn't load the PDFs.
Today I wanted to decrypt other PDFs from the same online library, but it doesn't work anymore. I get the message "Offlinekey cannot be decrypted".
I'll try to sniff the PrincipalKey with Wireshark. Maybe I can find it.
Thanks for your scripts!
They worked great yesterday for me!
Wireshark won't work (connection is encrypted). You have to setup an Apache + PHP Linux server as described in the blog's comments.

Anyway I suspect they haven't changed the PrincipalKey, just increased the MinorKeyRevision so that the PrincipalKey has to be transformed with the MKRevision (in a not yet known way).
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Old 12-25-2010, 07:05 AM   #8
Lost1
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I was afraid it won't work.
Tried it anyway. Unsuccessful as you said ;-)
Maybe I'll try to setup an apache server.
Thank you!
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Old 12-29-2010, 01:58 PM   #9
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The new version is working again!
Thank you!

PDF XChange Viewer is complaining though that the document is broken:


Didn't find any problems yet. Just resaved the document and the document is fine.
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Old 12-31-2010, 04:33 AM   #10
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Quote:
Originally Posted by Lost1 View Post
Yesterday I've successfully decrypted several PDFs encrypted with Policy Server.
I obtained the PDFs from our online library.
First ineptkey couldn't find the key, but after installing ADE ineptkey automatically found one although ADE couldn't load the PDFs.
Today I wanted to decrypt other PDFs from the same online library, but it doesn't work anymore. I get the message "Offlinekey cannot be decrypted".
I'll try to sniff the PrincipalKey with Wireshark. Maybe I can find it.
Thanks for your scripts!
They worked great yesterday for me!
They updated the key

Exchange to the recent key in the script as described by Neisklar and Tetrachroma in

http://www.boerse.bz/boerse/dokument...ml#post3804604
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Old 12-31-2010, 11:50 AM   #11
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Thank you joblack!
I'm also following the thread there. Didn't test it yet, 'cause I have no new ebooks.
I wish everyone a happy new year!
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Old 01-25-2011, 04:10 AM   #12
MATRIX5000
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Helo
I used ineptpdf 8.4.50 to Decrypt file pdf. File was incomplete, missing a few pages. How this repair.
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Old 01-27-2011, 07:11 PM   #13
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Quote:
Originally Posted by MATRIX5000 View Post
Helo
I used ineptpdf 8.4.50 to Decrypt file pdf. File was incomplete, missing a few pages. How this repair.
This is a well known pdf parser problem. No immediate solution is available and as Tetrachroma (and others) explained a pdf format expert is probably needed to solve the problem.
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Old 02-03-2011, 06:32 AM   #14
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Hey, I’m having trouble. I have the 8.4.48, but I keep getting the "Pywin extention (win32API module) needed" error. I’ve already downloaded the Pywin32-214 stuff, but I’m not sure how to install it. I click on the setup icon in the Pywin 32-214 subfolders and something pops up like MSDOS but then disappears real quick. I’m sort of a rookie and hoping someone can guide me in the right direction. How do you install the Win32 stuff?

procedures i did = Phyton 2.7 installed > Pycrypto 2.1.win32-py2.7 installed > Pywin32-214 downloaded and extracted.

I hope you could help me on this thank you in advance!
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Old 02-04-2011, 03:12 PM   #15
orange99
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Hello. I am using 8.4.51 to try to remove DRM from a FileOpen pdf. I am simply getting:

Error: 'Error'

Enabling debug, in the debug file I see what looks like a bunch of variables and their values. Then a long settings url. Then Settings and Retval=answer. Then a 1st url and then a 1st preresult. I don't know if there is supposed to be more info or not. Anything I can do to troubleshoot some more?
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