failed to decrypt cookie (AES-CBC) because UTF-8 decoding failed. Possibly the key is wrong?

[pryans]

Problem
After upgrading Brave browser, the --cookies-from-browser option can no longer decrypt cookies.

OS
linuxmint 5.15.0-126-generic #136-Ubuntu SMP Wed Nov 6 10:38:22 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux

Browser
Brave Browser 131.1.73.91

Command
gallery-dl --cookies-from-browser brave:/home/user/.config/BraveSoftware/Brave-Browser/Default

Error
[cookies][warning] failed to decrypt cookie (AES-CBC) because UTF-8 decoding failed. Possibly the key is wrong?
[cookies][info] Extracted 0 cookies from brave (369 could not be decrypted)
[cookies][debug] cookie version breakdown: {'v10': 0, 'v11': 369, 'other': 0, 'unencrypted': 0}

yt-dlp fix
yt-dlp/yt-dlp@4613096

Tested Workaround
I was able to make this change which fixed the issue.
In file
~/.local/lib/python3.10/site-packages/gallery_dl/cookies.py
change line 909 from
return plaintext.decode()
to
return plaintext[32:].decode()

[mikf]

[cookies][warning] failed to decrypt cookie (AES-CBC) because UTF-8 decoding failed. Possibly the key is wrong?

You are using a very outdated version of gallery-dl.
This warning message was changed 1½ years ago in v1.25.5 (2e6cea9)

I was able to make this change which fixed the issue.

The same fix is present in the latest v1.28.0: d2db706

[pryans]

Yeah I messed up the pip upgrade command and didn't notice.