DeDRM not removing DRM from Adobe Digital Editions

[Redwolf0]

I recently replaced my computer and now I cannot remove the DRM from Epub files from Adobe Digital Editions. I am using the latest version of Calibre. I hope that some one knows how to resolve this issue. The following are the details:

Failed to convert book: H:\EBooks\My Library\Michael Connelly\The Proving Ground (265)\The Proving Ground - Michael Connelly.epub with error:
DeDRM v7.2.1: Trying to decrypt The Proving Ground - Michael Connelly.epub
DeDRM v7.2.1: Verifying zip archive integrity
DeDRM v7.2.1: The Proving Ground - Michael Connelly.epub is a secure Adobe Adept ePub
DeDRM v7.2.1: Trying Encryption key default_key
Could not decrypt nsisemci.epub because of an exception:
Traceback (most recent call last):
File "calibre_plugins.dedrm.ineptepub", line 425, in decryptBook
File "calibre_plugins.dedrm.ineptepub", line 343, in __init__
File "calibre_plugins.dedrm.ineptepub", line 298, 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 v7.2.1: Failed to decrypt with key default_key after 0.1 seconds
DeDRM v7.2.1: Looking for new default Adobe Digital Editions Keys after 0.1 seconds
DeDRM v7.2.1: Exception when getting default Adobe Key after 0.1 seconds
Traceback (most recent call last):
File "calibre_plugins.dedrm.__init__", line 358, in ePubDecrypt
File "calibre_plugins.dedrm.adobekey", line 362, in adeptkeys
File "calibre_plugins.dedrm.adobekey", line 342, in CryptUnprotectData
calibre_plugins.dedrm.adobekey.ADEPTError: Failed to decrypt user key key (sic)
DeDRM v7.2.1: Ultimately failed to decrypt after 0.1 seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/...master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre\customize\ui.py", line 236, in _run_filetype_plugins
File "calibre_plugins.dedrm.__init__", line 644, in run
File "calibre_plugins.dedrm.__init__", line 415, in ePubDecrypt
calibre_plugins.dedrm.DeDRMError: DeDRM v7.2.1: Ultimately failed to decrypt after 0.1 seconds. Read the FAQs at Harper's repository: https://github.com/apprenticeharper/...master/FAQs.md
InputFormatPlugin: EPUB Input running
on H:\EBooks\My Library\Michael Connelly\The Proving Ground (265)\The Proving Ground - Michael Connelly.epub
Failed to run pipe worker with command: from calibre.srv.render_book import viewer_main; viewer_main()
Traceback (most recent call last):
File "runpy.py", line 198, in _run_module_as_main
File "runpy.py", line 88, in _run_code
File "site.py", line 83, in <module>
File "site.py", line 78, in main
File "site.py", line 50, in run_entry_point
File "calibre\utils\ipc\worker.py", line 195, in main
File "<string>", line 1, in <module>
File "calibre\srv\render_book.py", line 828, in viewer_main
File "calibre\srv\render_book.py", line 819, in render_for_viewer
File "calibre\srv\render_book.py", line 796, in render
File "calibre\ebooks\oeb\iterator\book.py", line 64, in extract_book
File "calibre\customize\conversion.py", line 241, in __call__
File "calibre\ebooks\conversion\plugins\epub_input. py", line 301, in convert
calibre.ebooks.DRMError: The Proving Ground - Michael Connelly.epub
Exception ignored while calling deallocator <function NativeFunction.__del__ at 0x0000023505AD97A0>:
Traceback (most recent call last):
File "calibre_plugins.dedrm.adobekey", line 268, in __del__
TypeError: 'NoneType' object is not callable
Exception ignored while calling deallocator <function NativeFunction.__del__ at 0x0000023505AD97A0>:
Traceback (most recent call last):
File "calibre_plugins.dedrm.adobekey", line 268, in __del__
TypeError: 'NoneType' object is not callable

[Martinoptic]

That version of DeDRM is very old. You need at least 10.09. Look under releases here.
https://github.com/noDRM/DeDRM_tools

[JSWolf]

calibre 9 is using a newer version of QT and a newer version of Python. It's no wonder such an old version of DeDRM will no longer work.

What you want is the alpha release of the current DeDRM.

https://github.com/noDRM/DeDRM_tools_autorelease/tags

[Redwolf0]

Thank you gentlemen for you quick response. I updated the DeDRM plugin and it still is not working. The following is from Calibre's debug mode. Would youhave any other advice to offer?

Spoiler:

ApplicationPaletteChange event ignored
Using calibre Qt style: True
ApplicationPaletteChange event received
calibre Debug log
calibre 9.8 embedded-python: True
Windows-11-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.26200')
Python 3.14.2
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: DeACSM (0, 0, 16) && Gather KFX-ZIP (from KFX Input) (2, 33, 0) && DeDRM (10, 0, 18) && Package KFX (from KFX Input) (2, 33, 0) && KFX metadata reader (from KFX Input) (2, 33, 0) && From KFX (2, 33, 0) && KFX Input (2, 33, 0) && Set KFX metadata (from KFX Output) (2, 19, 0) && KFX Output (2, 19, 0)
calibre 9.8 embedded-python: True
Windows-11-10.0.26200-SP0 Windows ('64bit', 'WindowsPE')
('Windows', '11', '10.0.26200')
Python 3.14.2
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: DeACSM (0, 0, 16) && Gather KFX-ZIP (from KFX Input) (2, 33, 0) && DeDRM (10, 0, 18) && Package KFX (from KFX Input) (2, 33, 0) && KFX metadata reader (from KFX Input) (2, 33, 0) && From KFX (2, 33, 0) && KFX Input (2, 33, 0) && Set KFX metadata (from KFX Output) (2, 19, 0) && KFX Output (2, 19, 0)
QPA platform: windows
devicePixelRatio: 1.0
logicalDpi: 96.0 x 96.0
physicalDpi: 92.53889943074003 x 92.67567567567568
[0.00] Starting up...
[0.00] Showing splash screen...
[1.19] splash screen shown
[1.19] Initializing db...
[1.37] db initialized
[1.37] Constructing main UI...
[2.10] GUI main window shown
[2.18] main UI initialized...
[2.18] Hiding splash screen
[2.18] splash screen hidden
[2.18] Started up in 2.18 seconds with 234 books
DeDRM v10.0.18: Trying to decrypt The Proving Ground.epub
DeDRM v10.0.18: Verifying zip archive integrity
DeDRM v10.0.18: The Proving Ground.epub is a secure Adobe Adept ePub for UUID 2fd6f3f1-ffbf-455c-8d03-505568806a57
DeDRM v10.0.18: Trying Encryption key default_key
nt17r976.epub is a secure Adobe Adept ePub.
Could not decrypt nt17r976.epub because of an exception:
Traceback (most recent call last):
File "C:\Users\ernes\AppData\Roaming\calibre\plugins\De DRM.zip\ineptepub.py", line 296, in decryptBook
File "C:\Users\ernes\AppData\Roaming\calibre\plugins\De DRM.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 v10.0.18: Failed to decrypt with key default_key after 0.1 seconds
DeDRM v10.0.18: Looking for new default Adobe Digital Editions Keys after 0.1 seconds
DeDRM v10.0.18: Exception when getting default Adobe Key after 0.1 seconds
Traceback (most recent call last):
File "calibre_plugins.dedrm.__init__", line 584, in ePubDecrypt
File "C:\Users\ernes\AppData\Roaming\calibre\plugins\De DRM.zip\adobekey.py", line 314, in adeptkeys
File "C:\Users\ernes\AppData\Roaming\calibre\plugins\De DRM.zip\adobekey.py", line 294, in CryptUnprotectData
adobekey.ADEPTError: Failed to decrypt user key key (sic)
DeDRM v10.0.18: Ultimately failed to decrypt after 0.1 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools...master/FAQs.md
Running file type plugin DeDRM failed with traceback:
Traceback (most recent call last):
File "calibre\customize\ui.py", line 236, 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 v10.0.18: Ultimately failed to decrypt after 0.1 seconds. Read the FAQs at noDRM's repository: https://github.com/noDRM/DeDRM_tools...master/FAQs.md
stdout+stderr from file dialog helper: [b'', b'']
piped data from file dialog helper: [b'\xe3\x89W\x87\x0f\xd4r.\x81\x88\x9a\xf84\xa2r\xd 0\x95\xd2&V\xdc\x127\x07\xce\xea`Z&\x80\xc2\xb3', b'C:\\Users\\ernes\\Documents\\My Digital Editions\\The Proving Ground.epub']
Added The Proving Ground to db in: 5.2
Failed to count pages in book: 272 EPUB because it is DRM locked
Added 1 books in 5.7 seconds
[119.56] Shutdown starting...
[119.59] Shutdown message shown...
[119.59] Grid view shutdown
[119.59] Bookshelf view shutdown
[119.60] Actions shutdown
[119.80] Various services shutdown
[119.80] Metadata backup shutdown
[119.90] Current database closed
[119.91] Windows hidden
[119.93] Waiting for overseers, mdns, and live to shutdown
[119.93] Waiting for device manager to shutdown
[119.93] Shutdown complete in 0.37, quitting...

[JSWolf]

You have the wrong version of DeDRM. You want the one I linked.

[Martinoptic]

Is it just the one book you've a problem with? Are you using deACSM? If so, have you updated the details within it as you've changed computers (very easy to forget to). If you use ADE to download will it then remove the drm? I don't know if Sats changed anything ADE related with 10.0.18 but it may be worth trying Jon's linked file? If it still doesn't work maybe someone else has some idea?

[pdurrant]

Detailed help with DRM removal isn't permitted at MobileRead. As at one of the github repositories.


Thread closed.