Installing Yubikey Manager

  ~ ❯ sudo apt install yubikey-manager yubikey-manager-qt
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
yubikey-manager is already the newest version (4.0.9-1).
The following additional packages will be installed:
  qml-module-io-thp-pyotherside qml-module-qt-labs-calendar
The following NEW packages will be installed:
  qml-module-io-thp-pyotherside qml-module-qt-labs-calendar yubikey-manager-qt
0 upgraded, 3 newly installed, 0 to remove and 505 not upgraded.
Need to get 4,606 kB of archives.
After this operation, 5,195 kB of additional disk space will be used.
Do you want to continue? [Y/n] Y
Get:1 http://http.kali.org/kali kali-rolling/main amd64 qml-module-io-thp-pyotherside amd64 1.6.0-2+b3 [76.8 kB]
Get:2 http://http.kali.org/kali kali-rolling/main amd64 qml-module-qt-labs-calendar amd64 5.15.8+dfsg-2 [39.0 kB]
Get:3 http://http.kali.org/kali kali-rolling/main amd64 yubikey-manager-qt amd64 1.2.4-1+b1 [4,490 kB]
Fetched 4,606 kB in 2s (2,065 kB/s)             
debconf: delaying package configuration, since apt-utils is not installed
Selecting previously unselected package qml-module-io-thp-pyotherside:amd64.
(Reading database ... 918730 files and directories currently installed.)
Preparing to unpack .../qml-module-io-thp-pyotherside_1.6.0-2+b3_amd64.deb ...
Unpacking qml-module-io-thp-pyotherside:amd64 (1.6.0-2+b3) ...
Selecting previously unselected package qml-module-qt-labs-calendar:amd64.
Preparing to unpack .../qml-module-qt-labs-calendar_5.15.8+dfsg-2_amd64.deb ...
Unpacking qml-module-qt-labs-calendar:amd64 (5.15.8+dfsg-2) ...
Selecting previously unselected package yubikey-manager-qt.
Preparing to unpack .../yubikey-manager-qt_1.2.4-1+b1_amd64.deb ...
Unpacking yubikey-manager-qt (1.2.4-1+b1) ...
Setting up qml-module-io-thp-pyotherside:amd64 (1.6.0-2+b3) ...
Setting up qml-module-qt-labs-calendar:amd64 (5.15.8+dfsg-2) ...
Setting up yubikey-manager-qt (1.2.4-1+b1) ...
Processing triggers for kali-menu (2023.1.7) ...
Processing triggers for desktop-file-utils (0.26-1) ...
Processing triggers for man-db (2.11.2-2) ...
Processing triggers for mailcap (3.70+nmu1) ...
  ~  8s ❯

Configuring YubiKey

Launching the application launches the following window.

yubikey_manager

Once our key is inserted.

yubikey_manager

First recommendations. Change the default PIN, PUK and Management Key.

yubico_manager

In all three cases we have the option use default in case it is the first time we configure our YubiKey. The minimum length of PIN and PUK is 6 digits.

yubico_manager

For the Management Key we can specify the encryption algorithm. We can also protect its access using the PIN itself.

yubico_manager

With this we would have our YubiKey ready to be used as a double factor in the services we need and are supported.