Multi-path physical random number generation method and system based on broadband laser chaos source

The invention provides a multi-path physical random number generation method and system based on a broadband laser chaos source. A photoelectric feedback ring and parallel filtering are introduced into a traditional external cavity semiconductor laser, multiple paths of laser chaotic signals which are unrelated, high in bandwidth, flat in power spectrum and hidden in time delay labels are generated at the same time, the laser chaotic signals serve as a physical entropy source, and multiple paths of high-speed physical random numbers are extracted from the physical entropy source in combination with a simple and effective post-processing technology. According to the invention, the limited entropy source bandwidth and randomness of the physical random number generator can be improved, and multiple paths of unrelated high-speed physical random numbers can be generated in parallel, so that the rate of the generated random numbers is greatly improved. 本发明提出了一种基于宽带激光混沌源的多路物理随机数产生方法及系统。通过在传统外腔半导体激光器中引入光电反馈环和并行滤波，同时产