基于自治布尔网络的高速物理随机数发生器研究

摘要

利用确定性的数学算法可产生快速伪随机数,然而其具有可预测性,难以确保信息安全.从混沌物理熵源中提取的物理随机数具有统计无偏和不可预测性,但是受限于传统混沌电路的带宽瓶颈,随机数的实时产生速率无法有效提高,为此,设计实现一种基于自治布尔网络的宽带混沌振荡器.研究结果表明:利用该装置可产生速率达10 Gbit/s的物理随机数序列;所产生的物理随机数序列具有良好的随机统计特性;该装置可便捷地应用于数据加密、高速保密通信等领域.%Using deterministic mathematical algorithms can produce fast pseudo-random numbers. However, their predictability makes them difficult to guarantee the security of communication. Unpredictable random numbers can be extracted from chaotic circuits, called physical random number generators (physical-RNGs). But the bandwidths of the conventional chaotic circuits limit their generation bit rates. A novel physical-RNG by utilizing the autonomous Boolean network which can produce wideband chaotic signals was designed. The results show that the physical-RNG can produce physical random bits stream at a speed up to 10 Gbit/s. The physical random numbers generated by the physical-RNG own good random characteristics. The physical-RNG can be conveniently applied in data encryption and secure communications.