Three-Party Semi-Quantum Key Agreement Protocol

International Journal of Theoretical Physics - A semi-quantum key agreement protocol is proposed to allow one quantum participant and two classical ones to negotiate the final shared secret key...     

Semi-Quantum Key Distribution Protocols with GHZ States

With the development of information security, quantum key distribution (QKD) has attracted much attention. Because of the lower requirement on quantum capability, more attention is paid to semi-quantum key distribution (SQKD). Two semi-quantum key distribution protocols based on GHZ states are proposed. The first protocol can achieve quantum key distribution between one classical party and one quantum party by cooperating with a third party with a strong quantum capability. Under the same conditions, the second one can achieve quantum key distribution between two classical parties. And the proposed semi-quantum key distribution protocols are free from some common attacks. It is significant for communication party without enough quantum devices to achieve quantum communication.