一种基于混沌原理的真随机数发生器  

A Chaos-Based Truly Random Number Generator

作　　者：王欣[1] 周童[1] 王永生[1] 喻明艳[1] 

机构地区：[1]哈尔滨工业大学微电子中心,黑龙江哈尔滨150001

出　　处：《微电子学与计算机》2009年第2期135-139,共5页Microelectronics & Computer

摘　　要：选取一维分段线性混沌映射函数设计真随机数发生器的随机源,具体分析了函数中各参数对输出序列随机性和电路稳定性的影响.通过改进函数在混沌吸引盆外的映射关系,成功解决了真随机源电路在各种噪声干扰和器件失配影响下所可能存在的失效问题,显著提高了电路的稳定性.该混沌函数以电压作为迭代变量,电路采用了负反馈形式的运放、采样保持电路和逻辑判断电路等模块,并运用了电荷再分配技术.以该随机源构成的真随机数发生器不但具有理想的随机性,在1Mbit/s的输出速率下,平均功耗不超过0.3mW,可广泛应用在SoC等嵌入式环境中.The piecewise-linear one-dimension(PL1D)chaotic map is used as the source of the designed truly random number generator(TRNG).The effects of the map s parameters are analyzed according to the randomness of output sequences and the stability of the circuit.Modifying the chaotic map beyond the basin of attraction,the invalidation problem by noise disturbances and device mismatches are effectively resolved,and the stability of the circuit is obviously improved.The variable of the chaotic map is realized as vol...

关 键 词：真随机数发生器 混沌映射 运放 

分 类 号：TN918[电子电信—通信与信息系统]