DeDRM fails to decrypt: encryption EBX_HANDLER (IndexError: list index out of range)

[michal-devel]

Question / bug report
I used ACSM Input Plugin to download ebook. It downloads the book correctly, however DeDRM fail to decrypt the file.

Which version of Calibre are you running?
5.37

Which version of the DeDRM plugin are you running?
v.10.0.3

Please have a look at log file:

DeDRM v10.0.3: Trying to decrypt ooqmsq26.pdf
DeDRM v10.0.3: ooqmsq26.pdf is a PDF ebook with encryption EBX_HANDLER
DeDRM v10.0.3: ooqmsq26.pdf is a PDF ebook (EBX) for UUID xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
DeDRM v10.0.3: Trying UUID-matched encryption key adobe_uuid_xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
error writing pdf: Invalid object number: objid=3290
Traceback (most recent call last):
  File "/home/michal/.config/calibre/plugins/DeDRM.zip/ineptpdf.py", line 1820, in getobj
    obj = objs[i]
IndexError: list index out of range

I'm happy to help you investigate this issue. At first I created an issue at ACSM Input Plugin for Calibre.

[noDRM]

Hard to say without having access to both the PDF file and the decryption key. Can you try this test version and see if that works?

DeDRM_plugin_test_233.zip

If it doesn't, I'd need to have the PDF and the key file to take a closer look. If you're willing to share these, my email is on my Github profile.

[michal-devel]

I’m back on 27th. I will try the test version, and, if needed, send you the files you asked for. Many thanks for your input! W dniu pt., 23.12.2022 o 10:56 noDRM ***@***.***> napisał(a):

…

Hard to say without having access to both the PDF file and the decryption key. Can you try this test version and see if that works? DeDRM_plugin_test_233.zip <https://github.com/noDRM/DeDRM_tools/files/10294127/DeDRM_plugin_test_233.zip> If it doesn't, I'd need to have the PDF and the key file to take a closer look. If you're willing to share these, my email is on my Github profile. — Reply to this email directly, view it on GitHub <#233 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AG3INTSKAYL56TJTOFSNETDWOVZLZANCNFSM6AAAAAAS6H66Q4> . You are receiving this because you authored the thread.Message ID: ***@***.***>

[michal-devel]

I has worked flawlessly! I tested the updated plugin on three PDFs and it worked without any problems.

[noDRM]

Thanks for confirming, I've added that bugfix to the repository.

[teerapap]

I also want to confirm that v10.0.9 solves this problem.
Thanks a lot for the fix. 😃