Full disk encryption on Jessie - usb key and passphrase
Hello,
I have laptop where I set up full disk encryption following this
tutorial:
https://xo.tc/setting-up-full-disk-encryption-on-debian-jessie.html
It works great, but since LUKS can have up to 8 key slots, I would like
to add another way to decrypt the laptop: key on a external usb. So, if
there is a usb with the key plugged in, laptop doesn't ask for the
passphrase and just continue booting; if there isn't - it asks for the
passphrase. Can this be done?
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