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A True Random Number Generator with Built-in Attack Detection

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2 Author(s)
Bernhard Fechner ; Dept. of Comput. Sci., FernUniversitdt in Hagen, Hagen ; Andre Osterloh

True random number generators (TRNGs) are extensively used in cryptography, simulations and statistics. Metastability is a way to generate true random numbers. By using electromagnetic radiation, a flip-flop in a metastable state can be manipulated to a known state. In this work, we introduce and analyze the concept of a randomized bit-cell, being able to simultaneously produce random numbers and detect active nonintrusive attacks. The experimental comparison with a standard TRNG yields an 11.5 times better distribution of zeros and ones while the TRNGs are under attack. The concept is extended by using a corrector. A perfect distribution can be gained at the expense of a delay which is proportional to the quality of the random source.

Published in:

Dependability of Computer Systems, 2008. DepCos-RELCOMEX '08. Third International Conference on

Date of Conference:

26-28 June 2008