A Bias and Correlation Free True Random Number Generator Based on Quantized Oscillator Phase under Sub-Harmonic Injection Locking

A. Khanna, Eslam Elmitwalli, S. Dutta, Shan Deng, S. Datta, Selçuk Köse, K. Ni
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引用次数: 3

Abstract

In this work, we demonstrated a novel oscillator phase based true random number generator (TRNG) design that can be high speed, and bias and correlation free. We are showing that: i) the arbitrary phase difference between the unsynchronized oscillator and injected synchronization signal is collapsed into two random and stable phases under subharmonic injection locking (SHIL); ii) the quantized oscillator phases under SHIL are fully symmetric and memoryless, generating bias and correlation free random bits; iii) the proposed oscillator phase TRNG is a generic design, independent of the oscillator platform. Thus, a CMOS ring oscillator based TRNG is also designed and evaluated. All of the generated random numbers pass the National Institute of Standards and Technology (NIST) tests and exhibit negligible bias and correlation from statistical analysis. Therefore, the proposed solution provides a competitive alternative to the existing on-chip TRNG design toolbox.
次谐波注入锁定下基于量子化振荡器相位的无偏置和无相关真随机数发生器
在这项工作中,我们展示了一种新的基于振荡器相位的真随机数发生器(TRNG)设计,它可以高速,无偏置和相关。结果表明:i)在次谐波注入锁定(SHIL)下,非同步振荡器与注入同步信号之间的任意相位差被压缩成两个随机稳定的相位;ii)在SHIL下的量子化振荡器相位是完全对称和无记忆的,产生无偏置和相关的随机位;iii)所提出的振荡器相位TRNG是一种通用设计,独立于振荡器平台。在此基础上,设计并评价了基于TRNG的CMOS环形振荡器。所有生成的随机数都通过了美国国家标准与技术研究所(NIST)的测试,并且从统计分析中显示出可以忽略不计的偏差和相关性。因此,提出的解决方案为现有的片上TRNG设计工具箱提供了一个有竞争力的替代方案。
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