vol-luks-cipher.xml

<volume type='file'>
  <name>LuksDemo.img</name>
  <key>/var/lib/libvirt/images/LuksDemo.img</key>
  <source>
  </source>
  <capacity unit='bytes'>5368709120</capacity>
  <allocation unit='bytes'>294912</allocation>
  <target>
    <path>/var/lib/libvirt/images/LuksDemo.img</path>
    <format type='raw'/>
    <permissions>
      <mode>0644</mode>
      <owner>0</owner>
      <group>0</group>
      <label>unconfined_u:object_r:virt_image_t:s0</label>
    </permissions>
    <encryption format='luks'>
      <secret type='passphrase' uuid='f52a81b2-424e-490c-823d-6bd4235bc572'/>
      <cipher name='serpent' size='256' mode='cbc' hash='sha256'/>
      <ivgen name='plain64' hash='sha256'/>
    </encryption>
  </target>
</volume>