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Anti-Piracy of Analog and Mixed-Signal Circuits in FD-SOI

Abstract : We propose an anti-piracy security technique based on locking for analog and mixed-signal circuits designed in FD-SOI. We show that obfuscating the body-bias voltages of tunable transistors is an effective way for inducing high functionality corruption. The obfuscation is achieved by constituting a secret key from the concatenation of the input digital codes of the body-bias generators that produce the correct body-bias voltages. We also propose a slight modification of the bodybias generator that increases prohibitively the time complexity of counterattacks aiming at finding an approximate key. The proposed locking scheme is demonstrated on a Σ∆ modulator used in highly-digitized RF receiver architectures.
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Submitted on : Friday, November 5, 2021 - 9:22:11 AM
Last modification on : Sunday, June 26, 2022 - 3:18:40 AM
Long-term archiving on: : Sunday, February 6, 2022 - 6:20:10 PM


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  • HAL Id : hal-03416062, version 1


Mariam Tlili, Alhassan Sayed, Doaa Mahmoud, Marie-Minerve Louërat, Hassan Aboushady, et al.. Anti-Piracy of Analog and Mixed-Signal Circuits in FD-SOI. 27th Asia and South Pacific Design Automation Conference (ASP-DAC), Jan 2022, Virtual, Taiwan. ⟨hal-03416062⟩



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