  The advent of distributed computing systems will offer great flexibility for
application workloads, while also imposing more attention to security, where
the future advent and adoption of quantum technology can introduce new security
threats. For this reason, the Multi-access Edge Computing (MEC) working group
at ETSI has recently started delving into security aspects, especially
motivated by the upcoming reality of the MEC federation, which involves
services made of application instances belonging to different systems (thus,
different trust domains). On the other side, Quantum Key Distribution (QKD) can
help strengthen the level of security by enabling the exchange of secure keys
through an unconditionally secure protocol, e.g., to secure communication
between REST clients and servers in distributed computing systems at the edge.
In this paper, we propose a technical solution to achieve this goal, building
on standard specifications, namely ETSI MEC and ETSI QKD, and discussing the
gaps and limitations of current technology, which hamper full-fledged in-field
deployment and mass adoption. Furthermore, we provide our look-ahead view on
the future of secure distributed computing through the enticing option of
federating edge computing domains.
