Soft dark bit masking with integrated load modulation and burn-in induced destabilization for physically unclonable function keys

摘要

Embodiments of an invention for soft dark bit masking are disclosed. In one embodiment, an apparatus includes a basic physically unclonable function (PUF) cell, a load, and a masking circuit. The load is selectively connectable to the basic PUF cell to determine whether the basic PUF cell is unstable. The masking circuit is to mask the output of the basic PUF cell if the basic PUF cell is determined to be unstable. Embodiments of the invention also include mechanisms to reinforce the stability of stable cells, while further destabilizing unstable cells.

主权项

1. An apparatus comprising:
a basic physically unclonable function (PUF) cell; a load, the load selectively connectable to the basic PUF cell to determine whether the basic PUF cell is unstable; and a masking circuit to mask the output of the basic PUF cell if the basic PUF cell is determined to be unstable.