I am not claiming that I know the code well en, so take my comments with a grain of salt. If signing is done at the client and key is never known to nsecbunker in its plain form, then only client has the access, if not, then server has the access. @PABLOF7z will be able to confirm one or the other way. 🐶🐾🫡
From the site: “Your nostr keys are stored encrypted with a passphrase you provide and must be decrypted by you before they can be used”
So is your passphrase salted? Is that saved somewhere? Or you have to enter each time to decrypt and sign?