Red Hat SummitC.5. Common Post-Installation Tasks
The following sections are about common post-installation tasks.
C.5.1. Set a Randomly Generated Key as an Additional Way to Access an Encrypted Block Device
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The following sections are about generating keys and adding keys.
C.5.1.1. Generate a Key
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This will generate a 256-bit key in the file
$HOME/keyfile.
dd if=/dev/urandom of=$HOME/keyfile bs=32 count=1 chmod 600 $HOME/keyfile
dd if=/dev/urandom of=$HOME/keyfile bs=32 count=1
chmod 600 $HOME/keyfile
C.5.1.2. Add the Key to an Available Keyslot on the Encrypted Device
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cryptsetup luksAddKey <device> ~/keyfile
cryptsetup luksAddKey <device> ~/keyfile
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