A Design and Implementation of Multi-thread Quantum Key Distribution Post-processing Software

Although the quantum technology introduces an unprecedented threat to the classical encryption field, the combination of Quantum Key Distribution (QKD) and one-time pad makes the absolutely secure encryption possible. However the key distribution rate of most QKD systems still cannot meet the requirements of practical applications. The complex QKD post-processing is one of the largest obstacles to improving the key distribution rate. In this paper, the design and implementation of a multi-thread QKD post-processing software is introduced, including the motivation, architecture and communication protocol. The QKD post processing software is flexible, efficient and easy to implement.