, Volume 19, Issue 3, pp 293-296
Date: 25 Apr 2006

A Three-Stage Quantum Cryptography Protocol

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Abstract

We present a three-stage quantum cryptographic protocol based on public key cryptography in which each party uses its own secret key. Unlike the BB84 protocol, where the qubits are transmitted in only one direction and classical information exchanged thereafter, the communication in the proposed protocol remains quantum in each stage. A related system of key distribution is also described.