KLJN Secure Key Exchange
CRYPTOGRAPHIC KEY EXCHANGE METHODOLOGY
Random Resistor Random Temperature Kirchhoff Law Johnson Noise (RRRT-KLJN) Key Exchange; RRRT-KLJN; Random-resistor-random-temperature Kirchhoff-law-Johnson-noise key exchange
Random-resistor-random-temperature Kirchhoff-law-Johnson-noise key exchange, also known as RRRT-KLJN or simply KLJN, is an approach for distributing cryptographic keys between two parties that claims to offer unconditional security. This claim, which has been contested, is significant, as the only other key exchange approach claiming to offer unconditional security is Quantum key distribution.