Event
M.S. Thesis Defense: Khai Vinh Lai
Monday, November 24, 2014
10:00 a.m.
AVW2168
Maria Hoo
301 405 3681
mch@umd.edu
ANNOUNCEMENT: M.S. Thesis Defense
Name: Khai Vinh Lai
Committee:
Professor Gang Qu
Professor Charles Silio
Professor Charalampos Papamanthou
Date/Time: Monday, November 24, 2014 at 10am-12pm
Location: AVW 2168
Title: Synergistic Configurable Ring Oscillator PUF: Design, Characterization, and Implementation
Abstract:
Silicon Physical Unclonable Function (PUF) is a novel hardware primitive that uses the intrinsic variation of integrated circuit manufacturing process for various security applications. Ring oscillator PUF (RO PUF) is one of the most popular silicon PUFs due to its ease of implementation on both ASIC and FPGA. However, RO PUF can have severe reliability issues when the operating environment deviates from the normal environment and security issues when it lacks an efficient anti-cloning mechanism. In this work, we propose a novel approach to build reliable RO PUF efficiently and enhance its resistance against physical cloning attack. The key idea of our approach is to construct ring oscillators with carefully selected inverters during the testing phase after the chip is fabricated. Our experimental results show that our configurable approach outperforms the traditional RO PUF and 1-out-of-8 PUF by generating more reliable bits that pass the NIST randomness tests. Our approach is also about 4X more hardware efficient than the 1-out-of-8 PUF. We also demonstrate that the configuration vectors can prevent physical cloning and have the potential usage in chip-dependent applications such as device authentication.
