How it works
Three properties that make a key impossible to steal.
Distributed key generation. Keys are generated, distributed, and used through multi-party computation across independent nodes. The complete key is never reconstructed at any single point. There is no "key file," no master vault, and no trusted relay node holding the plaintext. An attacker who compromises a node obtains only a share, which is mathematically indistinguishable from random noise.
Honest-majority security. The cryptographic guarantee holds as long as fewer than half of the nodes are compromised. A single hostile node, a single insider, or a single jurisdiction coercing one operator cannot reconstruct keys or break the system. This is a property of the math, not of contractual trust, and it survives the most realistic threat models for critical infrastructure.
Standards-first integration. Partisia Quantum ships NIST post-quantum algorithms (ML-KEM, ML-DSA, SLH-DSA) as a pure software layer that deploys on existing infrastructure today, no quantum hardware required. When QKD hardware is part of the deployment, any vendor integrates through the standard ETSI GS QKD 014 REST API, which eliminates vendor lock-in and keeps the architecture portable as the quantum ecosystem matures.
Further reading