A Keccak-based Wireless Authentication Tag With Per-Query Key Update And Power-Glitch Attack Countermeasures

This chip is a wireless authentication tag for supply chain integrity applications. Since the tags are intended to be used for anti-counterfeiting countermeasures against physical attacks are crucial. The tag implements FeCap based NV-DFFs along with an on-chip energy backup solution. This when combined with a custom key update protocol provides resilience against side-channel and power glitch attacks. The tag also implements a new regulating voltage multiplier topology and pulse position modulation for efficient power and data-transfer over a 433MHz near field inductive link.