A write-time based memristive PUF for hardware security applications

A novel memristor based physically unclonable function

“…In addition, memristor-based PUFs are also predicted to offer more resistance to model building attacks than purely CMOS-based PUF circuits, since memristors are bidirectional devices, while MOSFET is a unidirectional device [23]. Simulation based studies of memristor PUF circuits have demonstrated that they are capable of achieving close-to-ideal values for the statistical performance metrics, which are often superior compared to the values attained by CMOS-only PUF circuits [20,21].…”

“…There are two main ideas behind using memristors as PUF circuits, and the protocols built around them: write-time based output response variation [20][21][22] and variation of output voltages in memristor-based crossbar "polynominoes" [7,23,24]. We describe these two schemes in detail below.…”

“…Leveraging the intrinsic controlled sensitivity to processvariation effects, memristor-based circuits (usually in a hybrid form combined with CMOS) has been proposed to operate as hardware security primitives, particularly as PUF circuits [7,[20][21][22][23][24]]. The combination is made possible by the fact that the memristor manufacturing technology is compatible with modern CMOS fabrication standards [22], which provides memristors a distinct advantage compared to many other nano-devices.…”

A Novel Memristor-Based Hardware Security Primitive

“…This phenomenon has opened up the possibility of harnessing the unique properties of these nanodevices to build circuits that are superior to those that can be built using the current CMOS technology. Memristors [Chua 1971;Strukov et al 2008], especially metal-oxide memristors, are an exciting new addition to this class of nanodevices, which have the added advantage that their processing technology is relatively compatible with CMOS [Rose et al 2013a]. This makes the fabrication of both memristor and CMOS devices to build hybrid memristor-CMOS devices feasible, thus combining the best of both worlds.…”

Pulse width and height modulation for multi-level resistance in bi-layer TaOx based RRAM

“…Beyond memory applications, RRAM also holds promise for use in performing logic functions, 6 mimicking neuromorphic activities, 7 physically unclonable function (PUF) based hardware encryption, 8 or signal processing. 9 One challenge for implementing RRAM for these applications is the significant programming variation in RRAM resistance states, which includes cycle-to-cycle variation and stochastic switching, producing unwanted bit flip.…”