 KLJN Secure Key Exchange

KLJN Secure Key Exchange is a cryptographic protocol that aims to establish secure communication between two parties over an insecure channel. The name "KLJN" is derived from the initials of the last names of the protocol's inventors: Kolesar, Lentz, Johnson, and Nair. The KLJN protocol utilizes quantum key distribution (QKD) principles to create a shared secret key. It relies on the behavior of quantum bits (qubits), which can exist in multiple states simultaneously.