Comment on "Quantum Dialogue protocol"
Chang-Ho Hong, Hyung-Jin Yang
Abstract
In 2004, Ba An Nguyen [Phys. Lett. A 328, 6-10] has presented a Quantum Dialogue scheme for simultaneously communicating their messages. In this comment, we show that the quantum dialogue scheme is not secure against the intercept-and-resend attack and we propose a modified scheme which is secure against that attack.
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