Uniform-Distributed Noise Generator Based on a Chaotic Circuit

In this paper, the guidelines to design a true random number generator (TRNG) circuit of uniform distributed numbers. The approach is proposed for a TRNG based on a one-dimensional piecewise-linear chaotic map and it is suitable for the development of integrated TRNG circuits. In particular, the proposed design strategy is based on a feedback control procedure that allows to dynamically change the system parameters for the correction of the circuit "non-idealities" (e.g. the circuit offsets). The correction algorithm does not require a direct measurement of the system "non-idealities" or of the effective value of the map parameters, but only a dynamic estimation of these quantities based on the observation of the TRNG output. The design approach is validated by a hardware prototype implemented on a field programmable analog array (FPAA)