How does Firefox store saved passwords, and what files are involved?

Firefox saves login credentials in a record file (`logins.json` for version 32.0+, or `signons.sqlite` for older versions) located in the user's profile folder under `%APPDATA%\Mozilla\Firefox\Profiles\xxxxxxxx.default\`. The passwords are encrypted using 3DES-CBC, and the decryption keys are stored in a key file: `key4.db` (version ≥58.0.2) or `key3.db` (older versions). Understanding this structure is essential for offline password recovery, similar to the approach for Chrome browser.