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Conference Papers Year : 2022

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


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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Dates and versions

hal-03416062 , version 1 (05-11-2021)
hal-03416062 , version 2 (14-01-2023)



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. pp.423-428, ⟨10.1109/ASP-DAC52403.2022.9712547⟩. ⟨hal-03416062v2⟩
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