trusty/keymaster/4.0/android.hardware.keymaster@4.0-service.trusty.xml

<manifest version="1.0" type="device">
    <hal format="hidl">
        <name>android.hardware.keymaster</name>
        <transport>hwbinder</transport>
        <fqname>@4.0::IKeymasterDevice/default</fqname>
    </hal>
</manifest>