218Kauth/s, 3nJ/auth SCA/ML-Resistant Privacy-Preserving Mutual Authentication Accelerator with a Crypto-Double-Coupled PUF in 4nm class CMOS.

A SCA/ML-resistant secure PPMA accelerator is fabricated in 4nm class CMOS, occupying $3776 \mu \mathrm{m}^{2}$. Double-coupled crypto microarchitecture using a 128b strong PUF along with AES128 round hardware achieves CRP space of 10 ²⁸ with BER of 0.15%. Secure mote/server-authentication throughput of 218/435Kauth/s is demonstrated with no side-channel leakage detected after 2.5M authentications. Resistance to machine-learning attacks is demonstrated against 10M training CRPs.