Issue Removing DRM from New Books

[PhilLFC85]

Question / bug report

Ive downloaded some books online no idea were they were purchased from to begin with but they are all DRM Locked, ive updated all my programs and plugins to the latest versions but i dont understand debug logs so no idea were to start, any help would be greatly appreciated.

Which version of Calibre are you running?

9.13

Which version of the DeDRM plugin are you running?

10.0.29

If applicable, which version of the Kindle software are you running?

No response

Log output

Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: DeDRM (10, 0, 29) && Obok DeDRM (10, 0, 9)
calibre 9.13 embedded-python: True
Windows-11-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.26200')
Python 3.14.6
Windows: ('11', '10.0.26200', 'SP0', 'Multiprocessor Free')
Interface language: None
EXE path: C:\Program Files\Calibre2\calibre-debug.exe
Successfully initialized third party plugins: DeDRM (10, 0, 29) && Obok DeDRM (10, 0, 9)
QPA platform: windows
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 108.91792294807368 x 108.85714285714285
[0.00] Starting up...
[0.00] Showing splash screen...
[1.16] splash screen shown
[1.16] Initializing db...
[1.17] db initialized
[1.17] Constructing main UI...
DEBUG: 0.0 obok::utilities.py - loading translations
DEBUG: 0.0 obok::dialogs.py - loading translations
DEBUG: 0.0 obok::config.py - loading translations
DEBUG: 0.0 obok::action_err.py - loading translations
[1.65] GUI main window shown
[1.68] main UI initialized...
[1.68] Hiding splash screen
[1.68] splash screen hidden
[1.68] Started up in 1.68 seconds with 237 books
DeDRM v10.0.29: Trying to decrypt Be More Captain Marvel - Kendall Ashley.epub
DeDRM v10.0.29: Verifying zip archive integrity
DeDRM v10.0.29: Be More Captain Marvel - Kendall Ashley.epub is a secure Adobe Adept ePub for UUID 1489424f-dd11-4a4d-b894-7987667f8d8e
DeDRM v10.0.29: Trying Encryption key default_ade_key_uuid_9bde8ef1-3701-4ca2-92f3-5ce18ad21c79
moinndsu.epub is a secure Adobe Adept ePub.
Could not decrypt moinndsu.epub because of an exception:
Traceback (most recent call last):
File "C:\Users\philc\AppData\Roaming\calibre\plugins\DeDRM.zip\ineptepub.py", line 296, in decryptBook
File "C:\Users\philc\AppData\Roaming\calibre\plugins\DeDRM.zip\ineptepub.py", line 112, in init
File "Crypto\Cipher\AES.py", line 229, in new
File "Crypto\Cipher_init_.py", line 52, in _create_cipher
File "Crypto\Cipher_mode_cbc.py", line 274, in _create_cbc_cipher
File "Crypto\Cipher\AES.py", line 91, in _create_base_cipher
ValueError: Incorrect AES key length (0 bytes)

DeDRM v10.0.29: Failed to decrypt with key default_ade_key_uuid_9bde8ef1-3701-4ca2-92f3-5ce18ad21c79 after 0.1 seconds
DeDRM v10.0.29: Looking for new default Adobe Digital Editions Keys after 0.1 seconds
Found 1 keys
DeDRM v10.0.29: Ultimately failed to decrypt after 0.2 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre\customize\ui.py", line 253, in _run_filetype_plugins
File "calibre_plugins.dedrm.init", line 1063, in run
File "calibre_plugins.dedrm.init", line 658, in ePubDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v10.0.29: Ultimately failed to decrypt after 0.2 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools/blob/master/FAQs.md
Failed to count pages in book: 295 EPUB because it is DRM locked
Added Be More Captain Marvel to db in: 0.0
Added 1 books in 0.4 seconds
[21.65] Shutdown starting...
[21.68] Shutdown message shown...
[21.68] Grid view shutdown
[21.68] Bookshelf view shutdown
[21.69] Actions shutdown
[21.89] Various services shutdown
[21.89] Metadata backup shutdown
[21.96] Current database closed
[21.97] Windows hidden
[21.99] Waiting for overseers, mdns, and live to shutdown
[21.99] Waiting for device manager to shutdown
[21.99] Shutdown complete in 0.34, quitting...

[ElleKayEm]

Did you download them with ADE authorised with an Adobe ID on this computer?

[PhilLFC85]

I do have ADE installed, i downloaded them through Nicotine+ from another user who had them in his Calibre Library Share, ive not attempted to open them using ADE as i know that wont work ive only tried removing DRM through calibre

[ElleKayEm]

If you can't open them in ADE on this machine, then DeDRM has no way to get the correct key.

[PhilLFC85]

So they are absolutely useless unless the person who i got them off dedrm them or give me the key

[ElleKayEm]

Yes

[PhilLFC85]

Ahhhh that is not good 😐 I cant see the person removing the drm, thought i had saved a few hundred pound then, ill keep trying for access through the user, thanks for clearing that up for me.