10-Gbps true random number generator accomplished in ASIC

Abstract

Random number generators are wildly used in many applications in a diverse set of areas ranging from statistics to cryptography. Pseudo random number generators (PRNGs) are quite satisfactory for most applications. However, for cryptography and security applications, true random number generators (TRNGs) are required for the unpredictability. High density and high data output rate are as important as the quality of the TRNG in the nowadays true random number required devices and instruments. We present the design and the primary test results of our 10-Gbps TRNG, which is named TRNG2015, in the paper. The entropy source of the TRNG2015 is the jitter of ring oscillators. The TRNG2015 is fabricated in a 130nm CMOS process and assembled in a 6mm × 6 mm QFN48 package. It has one LVDS clock input and ten LVDS random data outputs. The output data rate depends on the input clock which is up to 1 GHz, and the output data rate is up to 1 Gbps per channel and up to 10 Gbps in total.