Breaking Analog Biasing Locking Techniques via Re-Synthesis
Asia and South Pacific Design Automation Conference(2021)
摘要
ABSTRACTWe demonstrate an attack to break all analog circuit locking techniques that act upon the biasing of the circuit. The attack is based on re-synthesizing the biasing circuits and requires only the use of an optimization algorithm. It is generally applicable to any analog circuit class. For the attacker the method requires no in-depth understanding or analysis of the circuit. The attack is demonstrated on a bias-locked Low-Dropout (LDO) regulator. As the underlying optimization algorithm we employ a Genetic Algorithm (GA).
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关键词
Hardware security and trust, IP/IC piracy, locking, analog circuit synthesis
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