Improving End-to-end Key Security in Trusted Node-based QKD Networks with Secret Sharing
Mario Wenning, Jonas Berl, Tobias Fehenberger, Carmen Mas Machuca · 2025
We develop an optimized key routing scheme that applies secret sharing in a meshed, trusted-node-based QKD network. Each threshold increment improves end-to-end key security by at least six nines, with cost increases below 57 %.