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Design and verification of TCP/IP offload engine in quantum key distribution system

2019; American Institute of Physics; Volume: 90; Issue: 11 Linguagem: Inglês

10.1063/1.5117336

1527-2400

Xiaodong Zhong, Lian Chen, Yin-Jie Li, Ge Jin,

Quantum Mechanics and Applications

Since the quantum key distribution (QKD) system is designed based on the basic principles of quantum mechanics, the theoretical security of information can be achieved by encrypting the communication content using the key generated by the QKD system. As the key generation rate increases, the QKD system has an increasing demand for information interaction through the network. This paper optimizes the network interaction part of the QKD system, unloading the TCP/IP protocol from the central processing unit to the hardware. Compared with the TCP/IP implemented in the dual-core processor, the interaction speed is increased by 114%, up to 560 Mbps. In addition, this paper designs identity authentication and encryption protection algorithms for all the interactive data, preventing a third-party from tampering and eavesdropping, further improving the security of the system.