PUF Architecture with Run-Time Adaptation for Resilient and Energy-Efficient Key

Abstract

This paper presents a novel PUF-based key generation architecture featuring run-time instability monitoring and adaptive error correction, overcoming the limitations of conventional architectures with fixed correction bits set at design or testing time. Run-time information from on-chip sensors is fused by a lightweight machine learning algorithm evaluating the minimum number of correction bits necessary to meet the required key error rate (KER). The number of correction bits in the subsequent er