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Development of “spin dice” — A Scalable Random Number Generator Based on Spin-Torque Switching
SPIN ( IF 1.8 ) Pub Date : 2019-03-24 , DOI: 10.1142/s2010324719400095
Akio Fukushima 1 , Kay Yakushiji 1 , Hitoshi Kubota 1 , Hiroshi Imamura 1 , Shinji Yuasa 1
Affiliation  

We have developed a random-number-generator (RNG) named “spin dice,” which employs the stochastic nature of spin-torque switching (STS) in a magnetic tunnel junction. The principle of the idea is that the switching probability first tuned around 0.5 is varied linearly with the applied current. After that, the switching results are converted into binary random numbers. We fabricated several types of “spin dice” by combining magnetic tunnel junctions and single-board microcomputer, and achieved generation speed of random numbers up to several hundred kbit/sec. Because STS is scalable and magnetic tunnel junctions have compatibility to semiconductor fabrication process, “spin dice” can be considered as a promising candidate for truly random-number-generator (TRNG) for security applications.

中文翻译:

“自旋骰子”的开发——基于自旋扭矩开关的可扩展随机数发生器

我们开发了一种名为“自旋骰子”的随机数发生器 (RNG),它利用磁隧道结中自旋扭矩切换 (STS) 的随机特性。该想法的原理是,首先调谐在 0.5 左右的开关概率随施加的电流线性变化。之后,将切换结果转换为二进制随机数。我们通过结合磁性隧道结和单板微机制作了几种类型的“旋转骰子”,实现了高达数百kbit/sec的随机数生成速度。由于 STS 是可扩展的,并且磁性隧道结与半导体制造工艺具有兼容性,“自旋骰子”可以被认为是用于安全应用的真正随机数发生器 (TRNG) 的有希望的候选者。
更新日期:2019-03-24
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