Quantum key distribution (QKD) offers theoretically secure key exchange but faces practical distance and rate limits. A new arXiv preprint proposes a Distributed Key Management System (DKMS) that instead provisions quantum-safe symmetric encryption keys to applications across a network, using a hybrid architecture that combines QKD with post-quantum cryptography (PQC).
The system is framed around "global capacity allocation," meaning it decides how and where keys are generated and delivered to make the most of scarce quantum resources. By doing so, it aims to address the distance and rate limitations that have kept QKD from broader adoption.
Because this is a single preprint, the claims are not yet peer-reviewed. The abstract does not provide performance benchmarks or compare the DKMS with alternative key-management schemes, so its effectiveness remains an open question pending further details.