Entanglement-based key distribution that tests correlations with a Bell inequality. Equal measurement axes generate correlated key data; other settings test the quantum channel. Authentication, statistical parameter estimation, information reconciliation and privacy amplification are needed to turn observed correlations into a secure shared key under specified assumptions.[ref]
Quantum cryptography based on Bell's theorem by Artur K. Ekert. 1991 primary proposal
New to topics? Read the docs here!