2.5D/3D Integration Technologies for Circuit Obfuscation
Yang Xie, Chongxi Bao, Yuntao Liu, Ankur Srivastava · 2016
Attacks on hardware can take on many forms. As modern chips are designed and fabricated in a global supply chain, circuit designs are subject to counterfeiting, piracy, and malicious modification by untrusted foundries, which are known as supply chain attacks. In this paper, we first survey existing circuit obfuscation techniques that are proposed to thwart the aforementioned attacks. Then, we investigate the application of 2.5D/3D integration technologies in circuit obfuscation. We introduce a security-aware design flow that utilizes the 2.5D IC and logic locking technique to counter the supply chain attacks. Opportunities and challenges in the 2.5D/3D IC based security applications are highlighted.