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Commit | Line | Data |
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1fe6d37e | 1 | # SPDX-License-Identifier: MIT-0 |
f4d74c61 | 2 | |
c2d54475 LP |
3 | # Destroy any old key on the Yubikey (careful!) |
4 | ykman piv reset | |
5 | ||
cf1e172d LP |
6 | # Generate a new private/public key pair on the device, store the public key in |
7 | # 'pubkey.pem'. | |
c2d54475 LP |
8 | ykman piv generate-key -a RSA2048 9d pubkey.pem |
9 | ||
2ccf0ff6 | 10 | # Create a self-signed certificate from this public key, and store it on the |
cf1e172d LP |
11 | # device. The "subject" should be an arbitrary user-chosen string to identify |
12 | # the token with. | |
c2d54475 LP |
13 | ykman piv generate-certificate --subject "Knobelei" 9d pubkey.pem |
14 | ||
cf1e172d LP |
15 | # We don't need the public key anymore, let's remove it. Since it is not |
16 | # security sensitive we just do a regular "rm" here. | |
c2d54475 LP |
17 | rm pubkey.pem |
18 | ||
cf1e172d LP |
19 | # Enroll the freshly initialized security token in the LUKS2 volume. Replace |
20 | # /dev/sdXn by the partition to use (e.g. /dev/sda1). | |
21 | sudo systemd-cryptenroll --pkcs11-token-uri=auto /dev/sdXn | |
22 | ||
23 | # Test: Let's run systemd-cryptsetup to test if this all worked. | |
fb8d67cd | 24 | sudo systemd-cryptsetup attach mytest /dev/sdXn - pkcs11-uri=auto |
c2d54475 | 25 | |
cf1e172d | 26 | # If that worked, let's now add the same line persistently to /etc/crypttab, |
12c346d8 ZJS |
27 | # for the future. We don't want to use the (unstable) /dev/sdX name, so let's |
28 | # figure out a stable link: | |
29 | udevadm info -q -r symlink /dev/sdXn | |
c9bb40b1 | 30 | |
12c346d8 ZJS |
31 | # Now add the line using the by-uuid symlink to /etc/crypttab: |
32 | sudo bash -c 'echo "mytest /dev/disk/by-uuid/... - pkcs11-uri=auto" >>/etc/crypttab' | |
33 | ||
34 | # Depending on your distribution and encryption setup, you may need to manually | |
35 | # regenerate your initramfs to be able to use a Yubikey / PKCS#11 token to | |
36 | # unlock the partition during early boot. | |
37 | # More information at https://unix.stackexchange.com/a/705809. | |
c9bb40b1 R |
38 | # On Fedora based systems: |
39 | sudo dracut --force | |
40 | # On Debian based systems: | |
41 | sudo update-initramfs -u |