Passwords

File | Settings | Appearance and Behavior | System Settings | Passwords for Windows and Linux
IntelliJ IDEA | Preferences | Appearance and Behavior | System Settings | Passwords for macOS
Ctrl+Alt+S

Specify whether IntelliJ IDEA should save your passwords - ones you use to access password-protected resources such as version control repositories and databases.

When you use KeePass password manager, the master password will be used to access a file that stores individual passwords. Once IntelliJ IDEA remembers your passwords, it will not ask for the passwords again including the master password unless you need to access the password database.

Under Save passwords, you can configure password settings.

Item	Description
In native Keychain	IntelliJ IDEA displays this option for macOS and Linux only. Select this option to use native Keychain for storing your passwords.
In KeePass	Select this option to use the KeePass password manager for storing your passwords.
Database	This field displays the location of your current c.kdbx file. If you need to select another location, click and in the dialog that opens, choose the appropriate one. If you want to import another c.kdbx file, click icon and from the drop-down list select Import. If you want to remove the existing passwords in the c.kdbx file, select Clear.
Master Password	Use this field to enter a password that you want to use for accessing c.kdbx file. The first time IntelliJ IDEA generates a password automatically.
Do not save, forget password after restart	Select this option if you want to remove the c.kdbx file containing individual passwords after the restart.