On the power of quantum encryption keys

Akinori Kawachi, Christopher Portmann

Yanhua He, Yun Ren, Liwei Zhang +2 more

Based on 5G communication, this paper proposes a quantum key encryption method for the physical layer of power grid communication that uses single quantum key encryption to generate a key matrix to achieve the effect of improving the security of the communication system. The innovation of this method is that it can calculate the quantum key update frequency and distribution strategy of each power business by itself. At the same time, the power grid communication encryption algorithm can optimize the quantum key management control process of the quantum security encryption transmission equipment. It can solve the problems of low-key application efficiency or insufficient key that may exist in the current application due to the singleness of the quantum key strategy. Simulation studies show that this scheme can enhance the security and practicability of sensitive information in the power grid.

Khashayar Barooti, Alex B. Grilo, Loïs Huguenin-Dumittan +4 more

Weilun Lao, Ken Chen

This paper proposes an information encryption transmission method for power system communication network based on quantum security communication technology, which can effectively encrypt the information in power system and ensure the security of information transmission. Based on quantum secure communication technology, the communication network architecture of power system is constructed. Quantum-layer quantum key distribution Network (QKD) uses BB84 protocol to realize quantum information exchange and optical synchronization, provide quantum key to control layer, and encrypt network information of power system. The control layer is responsible for monitoring QKD status, reasonably managing keys, and issuing communication commands to the communication layer. The communication layer switch encrypts and transmits the power system communication network data generated by the application layer through the minimum attenuation routing algorithm according to the controller instruction. Experiments show that this method can realize the information encryption of power system communication network, and the quantum key encryption function, key source exchange function and the number of encryption services meet the requirements. The application of this method can improve the throughput and communication connectivity of power system communication network.

Dong Wu, Linyu Peng, Dili Peng +4 more

In order to meet the demand of quantum key generation rate for power business encryption, a quantum security encryption communication framework for power enterprises is proposed. Combining the deployment mode of power distribution terminal and communication network architecture, this paper uses the M/M/1 model with preemptive priority to calculate the queuing delay of each service’s quantum key, and compare it with the delay requirements to determine whether quantum encryption is possible. The simulation results show that the key generation rate is required to reach 205 kbit/s if the quantum encryption requirements of all services need to be met under the service type and traffic volume of this case. Conclusion: Under the limited generation rate, a reasonable and scientific method is given for the selective application of quantum encryption to power information services.

KEISUKE TANAKA