gistfile1.txt
· 1.8 KiB · Text
Bruto
## Install steps
* Make sure system installed with simple password and LUKS.
* Prepare mok-util to ensure MOK trust your own keys. Reboot.
* Prepare all drivers, modules. Build and sign the kernel and modules. Reboot.
* Prepare necessary tpm tools. Use dracut to replace initramfs-tools.
* Use systemd-cryptenroll to change to a stronger password.
* Enable Secure Boot
* Use dracut to generate a initrd.
* Use TPM to auto unlock root partition.
## Install dependencies
```bash
sudo apt install dracut libtss2-dev tpm2-tss-engine-tools tpm2-tools
```
# dracut: initrd manager.
# libtss -> TSS 2 user state tools and library
# tpm-tools
# engine-tools might not be needed.
```bash
anduin@anduin-lunar:~$ sudo cat /etc/crypttab
nvme0n1p3_crypt UUID=9aacd8c2-e5f9-42bd-b345-f8617d0a668d none luks,discard,tpm2-device=auto
```
```bash
anduin@anduin-lunar:~$ cat /etc/dracut.conf.d/tpm2.conf
add_dracutmodules+=" tpm2-tss "
```
```bash
sudo dracut -f --hostonly
```
(Reboot. mandatory)
## Ensure TPM device exists
```bash
sudo systemd-cryptenroll --tpm2-device=list
```
## Enlist all encryption methods
```bash
sudo systemd-cryptenroll /dev/nvme0n1p3
```
## Make sure the PCR to bind.
https://uapi-group.org/specifications/specs/linux_tpm_pcr_registry/
* 0 BIOS itself
* 1 BIOS settings (optional)
* 2 PCIE Firmware option ROM (Suggested for desktop PC, optional for laptop)
* 7 Secure Boot
* 9 initrd
* 14 SHIM Mok
2,7,9,14
```bash
sudo systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs="0+2+7+9+14" /dev/aaaaa
```
Enter existing LUKS pass.
## Update
Every time install kernel update:
```bash
sudo dracut -f --hostonly
```
Then reboot.
Then:
```bash
sudo systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs="0+2+7+9+14" /dev/aaaaa
```
Optional to wipe:
```bash
sudo systemd-cryptenroll /dev/nvme0n1p3 --wipe-slot=1
```
| 1 | ## Install steps |
| 2 | |
| 3 | * Make sure system installed with simple password and LUKS. |
| 4 | * Prepare mok-util to ensure MOK trust your own keys. Reboot. |
| 5 | * Prepare all drivers, modules. Build and sign the kernel and modules. Reboot. |
| 6 | * Prepare necessary tpm tools. Use dracut to replace initramfs-tools. |
| 7 | * Use systemd-cryptenroll to change to a stronger password. |
| 8 | * Enable Secure Boot |
| 9 | * Use dracut to generate a initrd. |
| 10 | * Use TPM to auto unlock root partition. |
| 11 | |
| 12 | ## Install dependencies |
| 13 | |
| 14 | ```bash |
| 15 | sudo apt install dracut libtss2-dev tpm2-tss-engine-tools tpm2-tools |
| 16 | ``` |
| 17 | |
| 18 | # dracut: initrd manager. |
| 19 | # libtss -> TSS 2 user state tools and library |
| 20 | # tpm-tools |
| 21 | # engine-tools might not be needed. |
| 22 | |
| 23 | ```bash |
| 24 | anduin@anduin-lunar:~$ sudo cat /etc/crypttab |
| 25 | nvme0n1p3_crypt UUID=9aacd8c2-e5f9-42bd-b345-f8617d0a668d none luks,discard,tpm2-device=auto |
| 26 | ``` |
| 27 | |
| 28 | ```bash |
| 29 | anduin@anduin-lunar:~$ cat /etc/dracut.conf.d/tpm2.conf |
| 30 | add_dracutmodules+=" tpm2-tss " |
| 31 | ``` |
| 32 | |
| 33 | ```bash |
| 34 | sudo dracut -f --hostonly |
| 35 | ``` |
| 36 | |
| 37 | (Reboot. mandatory) |
| 38 | |
| 39 | ## Ensure TPM device exists |
| 40 | |
| 41 | ```bash |
| 42 | sudo systemd-cryptenroll --tpm2-device=list |
| 43 | ``` |
| 44 | |
| 45 | ## Enlist all encryption methods |
| 46 | |
| 47 | ```bash |
| 48 | sudo systemd-cryptenroll /dev/nvme0n1p3 |
| 49 | ``` |
| 50 | |
| 51 | ## Make sure the PCR to bind. |
| 52 | |
| 53 | https://uapi-group.org/specifications/specs/linux_tpm_pcr_registry/ |
| 54 | |
| 55 | * 0 BIOS itself |
| 56 | * 1 BIOS settings (optional) |
| 57 | * 2 PCIE Firmware option ROM (Suggested for desktop PC, optional for laptop) |
| 58 | * 7 Secure Boot |
| 59 | * 9 initrd |
| 60 | * 14 SHIM Mok |
| 61 | |
| 62 | 2,7,9,14 |
| 63 | |
| 64 | ```bash |
| 65 | sudo systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs="0+2+7+9+14" /dev/aaaaa |
| 66 | ``` |
| 67 | |
| 68 | Enter existing LUKS pass. |
| 69 | |
| 70 | ## Update |
| 71 | |
| 72 | Every time install kernel update: |
| 73 | |
| 74 | ```bash |
| 75 | sudo dracut -f --hostonly |
| 76 | ``` |
| 77 | |
| 78 | Then reboot. |
| 79 | |
| 80 | Then: |
| 81 | |
| 82 | ```bash |
| 83 | sudo systemd-cryptenroll --tpm2-device=auto --tpm2-pcrs="0+2+7+9+14" /dev/aaaaa |
| 84 | ``` |
| 85 | |
| 86 | Optional to wipe: |
| 87 | |
| 88 | ```bash |
| 89 | sudo systemd-cryptenroll /dev/nvme0n1p3 --wipe-slot=1 |
| 90 | ``` |