AC-XOR PUF: A Novel Design for Enhanced Entropy Source Integration

Afterwards, an XOR PUF based on an amplifier chain (AC-XOR PUF) was proposed to integrate multiple entropy source modules and perform cascading non-linear propagation [6]. This design utilizes amplifier modules with a gain of approximately 1 for cascading connection, allowing process errors in each stage to propagate non-linearly to the next stage.