Research And Design Of SoC Based QKD Software Management System

With the rise of quantum computing methods,modern cryptography based on complexity computing is facing a serious threat.These seemingly complex encryption methods are insignificant and vulnerable to the powerful parallel computing power of quantum computing.Although the encryption algorithm of "one secret at a time" has been proved to be absolutely safe,it is faced with the problem of key generation and distribution,so it cannot be applied in a large scale.However,the emergence of quantum key distribution means,that is,the emergence of quantum key distribution makes the "one secret at a time" encryption algorithm useful.Quantum secret communication based on quantum key distribution has gradually become a powerful technical means to guarantee network information security.It is widely used in some government organs,national defense fields,financial institutions,scientific and technological energy,research frontiers and other fields with high requirements on information security.At present,it has been proved that QKD system(Quantum Key Distribution)based on BB84 protocol has perfect security,and the security of this system is relatively ideal.Mostly adopted FPGA(Field Programmable Gate Array)for the implementation of QKD postprocessing System.If the CPU is embedded in the chip,the complex functions such as QKD data processing,data communication,key extraction,light source and detector control are realized in one by combining hardware and software.For the design of such a System on Chip(SoC),it will be of great significance to the development of current and future quantum communication,and accelerate the application and industrialization of quantum communication technology.The key generation process of quantum key distribution is realized on a chip,which can play a convenient and flexible role in information confidentiality and security for all kinds of devices and files that need to be encrypted in the future.The main research content of this paper is the research and design of the software management part of the system on Chip(SoC),the software has the advantage of better to control the process,on the piece of quantum key distribution system,five sub-modules of postprocessing are controlled,respectively base vector comparison,error estimation,information negotiation,data validation and private amplification process and so on,Then through the encryption algorithm,finally produce the key smoothly.The feasibility of the software system was tested by the self-built hardware experiment platform.