Decrypt .ldb File

Description of the issue:

I need to access some .ldb files stored in the “Local Storage” system folder for brave browser on my mac. These .ldb files are encrypted so I can’t open them in a program like DB Browser without first decrypting them as it’s prompting me for either a “passphrase” or “raw key”.

Can anyone point me in the direction of finding the decryption key? I assume they are locally stored on my mac but I have no idea which folder to look for them in. Happy to provide screenshots and file directory paths if needed.