Abstract
ks the position
of the unstable PUF bits and then discards these bits further in
the application. As reported in [3], by masking out the unstable
bits, the readout of remaining PUF bits has an ideal BER
of 0%. Although such an outcome is desired, it necessitates
more testing time and/or additional circuitry to detect the
unstable bits. This can introduce a higher cost and may
add more vulnerability to side-channel attacks. For example,
if the power lines are separated for dark-bit identification