The KMS was showcased at the International Digital Security Forum (IDSF) 2025 in Vienna. This showcase accompanied the talks throughout the 3 days, but was especially supporting Quantum Technology talks held on the first day.
The setup was fairly compact showcasing the open source Wireguard VPN extension Arnika, including the use-case of HSM backups. The VPN obtained the QKD keys from the KMS instances via ETSI 014 and further enhanced the keying material with a PQC exchanged second key. The QKD Network consisted of three nodes with one KMS each and one Think Quantum link. For rack space reasons, a second QKD pair was not deployed, but simulated. Further the group video application use-case was showcased.
During the showcase several benchmarks were performed. The key request interval for the 256 bit key from the VPN application was successively increased. The result was that the KMS was able to answer a key request every 200 ms, faster queries resulted in the KMS still performing flawlessly, though the time it took to answer a key request was not faster than the afore mentioned 200 ms. The hardware benchmark of the KMS also showed the efficient programming in C++, since the KMS only used approximately 35 MB RAM peak and average 20% CPU of the rather low performance dual core Intel Pentium G7400.