Logic Obfuscation against IC Reverse Engineering Attacks Using PLGs
Qutaiba Alasad, Jiann Shiun Yuan · 2017
A strong logic locking approach could be utilized to contest serious threats on ICs. However, recent Boolean satisfiability (SAT) attack successfully decrypts all existing logic locking techniques. Even though different methods have been used to make the attack execution time increase exponentially, those methods are vulnerable to tracked and removed resilient SAT structure based attacks. In this work, we use silicon nanowire FETs to produce an obfuscated IC against reverse engineering attacks and reduce the performance penalty by exchanging some logic gates with different polymorphic gates based SiNW FETs and incorporating a small block of circuitry whose output is untraceable.