A QKD Protocol Extendable to Support Entanglement and Reduce Unauthorized Information Gain by Randomizing the Bases Lists with Key Values and Invalidate Explicit Privacy Amplification

摘要: This paper suggests an improvement to the BB84 scheme in Quantum key distribution. The original has its weakness letting quantifiably more information gain eavesdropper during public announcement of unencrypted bases lists. security secret comes at expense final length. We aim exploiting randomness preparation (measurement) basis and bit values encoded (observed), so as randomize lists before they are communicated over channel. A proof is given for our proven that protocol results lesser by Eve comparison with other extensions. Moreover, analysis made on feasibility proposal such support entanglement based QKD. performance compared terms upper lower bounds tolerable error rate. also quantify (by Eve) mathematically using familiar approach concept Shannon entropy. models attack interference a multi-access quantum Besides, this hints invalidation separate privacy amplification step "prepare-and-measure" protocols general.