Two-factor authentication

New in version 4.8.0.

Since phpMyAdmin 4.8.0 you can configure two-factor authentication to be
used when logging in. To use this, you first need to configure the
phpMyAdmin configuration storage. Once this is done, every user can opt-in for the second
authentication factor in the Settings.

When running phpMyAdmin from the Git source repository, the dependencies must be installed
manually; the typical way of doing so is with the command:

composer require pragmarx/google2fa-qrcode bacon/bacon-qr-code

Or when using a hardware security key with FIDO U2F:

composer require code-lts/u2f-php-server

Authentication Application (2FA)

Using an application for authentication is a quite common approach based on HOTP and
It is based on transmitting a private key from phpMyAdmin to the authentication
application and the application is then able to generate one time codes based
on this key. The easiest way to enter the key in to the application from phpMyAdmin is
through scanning a QR code.

There are dozens of applications available for mobile phones to implement these
standards, the most widely used include:

Hardware Security Key (FIDO U2F)

Using hardware tokens is considered to be more secure than a software based
solution. phpMyAdmin supports FIDO U2F

There are several manufacturers of these tokens, for example:

Simple two-factor authentication

This authentication is included for testing and demonstration purposes only as
it really does not provide two-factor authentication, it just asks the user to confirm login by
clicking on the button.

It should not be used in the production and is disabled unless
$cfg['DBG']['simple2fa'] is set.