Random numbers from an integrated CMOS double-scroll

Abstract

A double-scroll chaotic oscillator based true random number generator (TRNG) is designed and fabricated in CMOS 0.18 μm process. In order to realize a TRNG suitable for CMOS process, an op-amp based chaotic oscillator is chosen and transistor-level op-amps are designed. Then, a symmetrically dividing method is proposed to exploit the statistics of chaotic signals generated by the oscillator and improve the throughput of random bits. The TRNG core occupies 0.026 mm 2 and dissipates 1 mW. Measurements show that the generated binary bits can pass the SP800-22 test suites and FIPS140-1 standard with a throughput of 20 Mbps.

A true random number generator based on meta-stable state

“…The output of the TRNG is unpredictable numbers or strings, which are essential keys for encrypting the information. In a way, the performance of encryption algorithms is affected by the randomness of random numbers [1,2,3]. In 2006, Jovan Dj.Golic [4] proposed a digital TRNG based on asynchronous feedback logic.…”