Ubuntu

Preverjanje zapečatene strojne opreme

If you have ordered the unit with the option “sealed screws and sealed bag”, please verify the sealing before unpacking. If you do not know what this means, skip this section.

Postopek varnega zagona

With the NitroPad and NitroPC, malicious changes to the BIOS, operating system, and software can be easily detected. For example, if you left your NitroPad in a hotel room, you can use your Nitrokey to check if it has been tampered with while you were away. If an attacker modifies the NitroPad’s firmware or operating system, the Nitrokey will detect this (instructions below).

Each time you start the NitroPad or the NitroPC, you should - if possible - connect your Nitrokey. If the Nitrokey is plugged in and the system has not been modified, the following screen will appear when it is turned on.

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The box marked in red contains the information that the BIOS has not been changed and that the shared secret of the NitroPad or the NitroPC and the Nitrokey match. But this information is not sufficient, because an attacker could have faked it. If at the same time the Nitrokey also flashes green, everything is fine. An attacker would have to have had access to the NitroPad or NitroPC and Nitrokey to achieve this result. It is therefore important that you do not leave both devices unattended.

If the information on the NitroPad or NitroPC does not match the information on the Nitrokey, the background would turn red and the message “Invalid Code” would appear. This could indicate that manipulation has taken place.

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V nadaljevanju je opisano, kako je lahko videti postopek zagona, če je bil sistem spremenjen (na primer po posodobitvi), in kakšna sporočila o napakah se lahko pojavijo.

Nasvet

The NitroPad and NitroPC can also be started without the Nitrokey. If you don’t have the Nitrokey with you, but are sure that the hardware has not been manipulated, you can boot your system without checking.

Rešitev Ubuntu 24.04.

Obstaja (vprašanje)ki Ubuntuju preprečuje prikaz zaslona za dešifriranje luksa, če se zažene z glavami. Tam je in lahko slepo vnesete geslo, potem pa se Ubuntu zažene normalno. Sledite tem korakom:

  1. Glave se začnejo. Če ni treba storiti ničesar, se Ubuntu zažene samodejno.

  2. Čez nekaj časa se bo prikazal črn zaslon z belim napisom v zadnjih vrsticah:

Locking TPM2 platform hierarchy...
Starting the new kernel

Te vrstice kažejo, da se Ubuntu začenja.

  1. Počakajte 5 sekund in nato vnesite geslo **** („12345678“, če ga zaganjate prvič), nato pa Vnesite.

  2. Zdaj se bo prikazal običajen zaslon Ubuntuja. Ob prvem zagonu morate dokončati začetno konfiguracijo.

Začetek

Po nakupu so gesla nastavljena na privzeto vrednost in jih morate spremeniti sami:

  1. Po zagonu sistema pritisnite Enter („Default Boot“), če naprava NitroPad ni pokazala nobenih napak in če je tipka Nitrokey zeleno osvetljena (glejte zgoraj).

  2. Nato vas bo sistem pozval k vnosu gesla za dešifriranje trdega diska. Na začetku je geslo „12345678“. To je bilo spremenjeno v različici 10.04.2024, zato, če „12345678“ ne deluje, poskusite s starim privzetim geslom: „PleaseChangeMe“.

    Img3

  3. Sistem vas bo nato vodil skozi postopek ustvarjanja uporabniškega računa. Po tem morate uspešno zagnati sistem in ga že lahko normalno uporabljate.

  4. Open the pre-installed Nitrokey App and change the PINs of your Nitrokey. To learn more about how to change the PINs, please refer to chapter Change User and Admin PIN.

  5. Spremenite geslo za šifriranje diska. Če želite izvedeti več o tem, kako spremeniti geslo za šifriranje diska, glejte poglavje Premeni geslo za šifriranje diska. Ta geslofraza se razlikuje od gesla vašega uporabniškega računa.

Obnašanje po posodobitvi sistema

The NitroPad and NitroPC firmware checks certain system files for changes. If your operating system has updated important components, you will be warned the next time you boot the NitroPad or NitroPC. This could look like this, for example:

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That’s why it’s important to restart your NitroPad or your NitroPC under controlled conditions after a system update. Only when the new status has been confirmed can you leave the device unattended again. Otherwise, you will not be able to distinguish a possible attack from a system update. Detailed instructions for a system update can be found here.