Obtaining true-random binary numbers from a weak radioactive source

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Abstract

In this paper, we present a physical random number generator (RNG) for cryptographic applications. The generator is based on alpha decay of Americium 241 that is often found in common house-hold smoke detectors. A simple and low-cost implementation is shown to detect the decay events of a radioactive source. Furthermore, a speed-optimized random bit extraction method was chosen to gain a reasonable high data rate from a moderate radiation source (0.1 μCi). A first evaluation by applying common suits for analysis of statistical properties indicates a high quality of the data delivered by the device. © Springer-Verlag Berlin Heidelberg 2005.

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Alkassar, A., Nicolay, T., & Rohe, M. (2005). Obtaining true-random binary numbers from a weak radioactive source. In Lecture Notes in Computer Science (Vol. 3481, pp. 634–646). Springer Verlag. https://doi.org/10.1007/11424826_67

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