The electrum FAQ solutions “How is the pockets encrypted?” as follows:
Electrum makes use of two separate ranges of encryption:
Your seed and personal keys are encrypted utilizing AES-256-CBC. The non-public keys are decrypted solely briefly, when you want to signal a transaction; for this you want to enter your password. That is executed in an effort to decrease the period of time throughout which delicate data is unencrypted in your laptop’s reminiscence.
As well as, your pockets file could also be encrypted on disk. Be aware that the pockets data will stay unencrypted within the reminiscence of your laptop all through your session. If a pockets is encrypted, then its password shall be required in an effort to open it. Be aware that the password is not going to be saved in reminiscence; Electrum doesn’t want it in an effort to save the pockets on disk, as a result of it makes use of uneven encryption (ECIES).
Pockets file encryption is activated by default since model 2.8. It’s meant to guard your privateness, but in addition to stop you from requesting bitcoins on a pockets that you don’t management.
The above would not appear to me to be ample to decrypt the data however I count on inspecting some Electrum supply code would offer the lacking dertails.
Trying to find decrypt electrum pockets file locates instruments ind data that is perhaps of some assist.