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Securing Analog Mixed-Signal Integrated Circuits Through Shared Dependencies
Conference proceeding

Securing Analog Mixed-Signal Integrated Circuits Through Shared Dependencies

Kyle Juretus, Vaibhav Venugopal Rao, Ioannis Savidis and Assoc Comp Machinery
GLSVLSI '19 - PROCEEDINGS OF THE 2019 ON GREAT LAKES SYMPOSIUM ON VLSI, pp 483-488
01 Jan 2019

Abstract

Computer Science Computer Science, Theory & Methods Science & Technology Technology
The transition to a horizontal integrated circuit (IC) design flow has raised concerns regarding the security and protection of IC intellectual property (IP). Obfuscation of an IC has been explored as a potential methodology to protect IP in both the digital and analog domains in isolation. However, novel methods are required for analog mixed-signal circuits that both enhance the current disjoint implementations of analog and digital security measures and prevent an independent adversarial attack of each domain. This paper demonstrates the vulnerabilities of implementing disjointed obfuscation techniques to protect analog mixed-signal ICs. In addition, a novel methodology is developed to generate functional and behavioral dependencies between the analog and digital domains that results in an increase in the adversarial key search space. The dependencies between the analog and digital keys result in a 3x increase in the number of iterations required to complete the SAT attack. An analysis of best practices is also provided to aid in the implementation of security measures for analog mixed-signal circuits.

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