Research On Device Access Authentication Based On Quantum Teleportation Under Noise

Information security is the primary task in modernization development for cryptosystem is an epoch-making means to realize information security.Traditional encryption technology is no longer completely reliable with the rapid improvement of computer computing power.Quantum characteristics for uncloneable,indistinguishable,and uncertain have become a research hotspot in the field of information security due to its unconditional security in quantum communication.Quantum teleportation is one of the most important research achievements in quantum communication.It carries out measurement operations and unitary operations on the corresponding initial quantum states and collapsed quantum states to reconstruct unknown quantum state information,thereby achieving efficient and safe information transmission.Furthermore,quantum teleportation also has the superiorities of large channel capacity,strong anti-interference ability and long transmission distance,and has been widely concerned by experts and scholars in related fields at home and abroad.For now,more efficient quantum teleportation protocols and applications based on quantum teleportation principle are still hot research topics.Therefore,this paper mainly studies the quantum teleportation protocols under noise and the application for the quantum teleportation principle in device access authentication of smart grid.The main research results are as follows:(1)Bidirectional quantum teleportation protocol under noise.Firstly,with regards to the problem of high cost and low efficiency in bidirectional quantum teleportation protocol,an innovative bidirectional quantum teleportation protocol based on a four-qubit GHZ state and two Bell states is proposed.In this protocol,if the two communication participants separately perform four single-qubit measurement operations and a four-qubit joint measurement operation on their own qubits,two arbitrary single-qubit quantum states and an unknown three-qubit state can be mutually transmitted between them.The proposed protocol has the advantages of low resource consumption and high transmission efficiency.Secondly,a channel authentication scheme is proposed to solve the problem that there may be eavesdropping attack on quantum channel and ensure the security of quantum channel in bidirectional quantum teleportation.Finally,the effects for four types of joint noises on the protocol are analyzed,which can be visualized by studying the relationships between fidelity and quantum noise.(2)Controlled quantum teleportation protocol under noise.Firstly,for the problem of complex computation and low communication success rate in the controlled quantum teleportation protocol,we design a theoretical controlled quantum teleportation protocol based on a seven-qubit entangled state.In this protocol,the sender and the controller respectively carry out two GHZ measurement operations and a projection measurement operation on their own qubits,and the receiver takes appropriate unitary operations,which can finally realize the long-distance transmission of an unknown Bell state.Secondly,the performances of the protocol are analyzed,including by comparisons explain the obvious superiorities in transmission efficiency and communication success rate of the protocol,by using decoy photon technology guarantee its security.Finally,since there are two quantum channels in controlled quantum teleportation,the analysis for the quantum noise effect on information transmission can be divided into two cases where two quantum channels are affected by the same and different noises at the same time.The each relation between fidelity and quantum noise can be obtained in these two cases.(3)Device access authentication based on quantum teleportation in smart grid.In view of the bottlenecks encountered in the promotion and application of quantum teleportation in practical production and life,we propose a third party controlled device access bidirectional authentication protocol in smart grid environment based on the principle of bidirectional quantum teleportation and controlled quantum teleportation.We mainly describe the realization process and the basic principle of this authentication protocol,then further extend which to realize the device access authentication protocol of cross control center in the smart grid.The analysis shows that the authentication protocol has high security.