A Ring Oscillator Based Truly Random Number Generator

Jitter;Random Number Generator;Ring Oscillator;Last Passage Time;Electrical and Computer Engineering

Robson, Stewart

University of Waterloo

关键词: Jitter;    Random Number Generator;    Ring Oscillator;    Last Passage Time;    Electrical and Computer Engineering;   

Others  :  https://uwspace.uwaterloo.ca/bitstream/10012/7911/1/Robson_Stewart.pdf

瑞士|英语

来源: UWSPACE Waterloo Institutional Repository

【 摘 要 】

Communication security is a very important part of modern life. A crucial aspect of security is the ability to identify with near 100% certainty who is on the other side of a connection. This problem can be overcome through the use of random number generators, which create unique identities for each person in a network. The effectiveness of an identity is directly proportional to how random a generator is. The speed at which a random number can be delivered is a critical factor in the design of a random number generator.This thesis covers the design and fabrication of three ring oscillator based truly random number generators, thefirst two of which were fabricated in 0.13µ m CMOS technology. The randomness from this type of random number generator originates from phase noise in a ring oscillator.The second and third ring oscillators were designed to have a low slew rate at the inverter switching threshold. The outputs of these designs showed vast increases in timing jitter compared to thefirst design. The third design exhibited improved randomness with respect to the second design.