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This was requested, though I think an issue was never filed. If people are supposed to invoke it, even for testing, then it's reasonable to make it "public".
42 lines
1.6 KiB
Bash
42 lines
1.6 KiB
Bash
# SPDX-License-Identifier: MIT-0
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# Destroy any old key on the Yubikey (careful!)
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ykman piv reset
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# Generate a new private/public key pair on the device, store the public key in
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# 'pubkey.pem'.
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ykman piv generate-key -a RSA2048 9d pubkey.pem
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# Create a self-signed certificate from this public key, and store it on the
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# device. The "subject" should be an arbitrary user-chosen string to identify
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# the token with.
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ykman piv generate-certificate --subject "Knobelei" 9d pubkey.pem
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# We don't need the public key anymore, let's remove it. Since it is not
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# security sensitive we just do a regular "rm" here.
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rm pubkey.pem
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# Enroll the freshly initialized security token in the LUKS2 volume. Replace
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# /dev/sdXn by the partition to use (e.g. /dev/sda1).
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sudo systemd-cryptenroll --pkcs11-token-uri=auto /dev/sdXn
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# Test: Let's run systemd-cryptsetup to test if this all worked.
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sudo systemd-cryptsetup attach mytest /dev/sdXn - pkcs11-uri=auto
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# If that worked, let's now add the same line persistently to /etc/crypttab,
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# for the future. We don't want to use the (unstable) /dev/sdX name, so let's
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# figure out a stable link:
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udevadm info -q -r symlink /dev/sdXn
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# Now add the line using the by-uuid symlink to /etc/crypttab:
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sudo bash -c 'echo "mytest /dev/disk/by-uuid/... - pkcs11-uri=auto" >>/etc/crypttab'
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# Depending on your distribution and encryption setup, you may need to manually
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# regenerate your initramfs to be able to use a Yubikey / PKCS#11 token to
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# unlock the partition during early boot.
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# More information at https://unix.stackexchange.com/a/705809.
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# On Fedora based systems:
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sudo dracut --force
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# On Debian based systems:
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sudo update-initramfs -u
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