A Low Power True Random Number Generator in 0.18 M CMOS

Abstract

This paper presents the design and implementation of a true random number generator (TRNG) for smart card application. Based on the effect of the oscillator phase noise and meta-stable state of the trigger, the random number is generated. An efficient calibration method can correct the uniformity of random number sequences and improve the distribution of the random number. The prototype of the TRNG is fabricated in a 0.18μm CMOS technology. Under the standard diehard test, the results show that bit rate is 1Mb/s and the TRNG has a good pass rate under a bad condition. The power consumption of the TRNG is 0.066mW with a 1.8V power supply.