Paper 2018/961
Jitter Estimation with High Accuracy for Oscillator-Based TRNGs
Shaofeng Zhu, Hua Chen, Limin Fan, Meihui Chen, Wei Xi, and Dengguo Feng
Abstract
Ring oscillator-based true random number generators (RO-based TRNGs) are widely used to provide unpredictable random numbers for cryptographic systems. The unpredictability of the output numbers, which can be measured by entropy, is extracted from the jitter
of the oscillatory signal. To quantitatively evaluate the entropy, several stochastic models have been proposed, all of which take the jitter as a key input parameter. So it is crucial to accurately estimate the jitter in the process of entropy evaluation. However, several previous methods have estimated the jitter with non-negligible error, which would cause the overestimation of the entropy. In this paper, we propose a jitter estimation method with high accuracy. Our method aims at eliminating the quantization error in previous counter-based jitter estimation methods and finally can estimate the jitter with the error smaller than
Metadata
- Available format(s)
-
PDF
- Category
- Implementation
- Publication info
- Published elsewhere. CARDIS 2018
- Keywords
- TRNGring oscillatorjitterestimationentropy.
- Contact author(s)
- zhushaofeng @ tca iscas ac cn
- History
- 2018-10-14: received
- Short URL
- https://ia.cr/2018/961
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2018/961, author = {Shaofeng Zhu and Hua Chen and Limin Fan and Meihui Chen and Wei Xi and Dengguo Feng}, title = {Jitter Estimation with High Accuracy for Oscillator-Based {TRNGs}}, howpublished = {Cryptology {ePrint} Archive, Paper 2018/961}, year = {2018}, url = {https://eprint.iacr.org/2018/961} }