Highly secure physically unclonable cryptographic primitives based on interfacial magnetic anisotropy

In a step forward for information security for the Internet of Things, a team of researchers has published a new paper in the online edition of Nano Letters in which they have engineered a new type of physically unclonable function (PUF) based on interfacial magnetic anisotropy energy (IAE). This PUF utilizes the random distribution of magnetization orientation of each device, which originates from the sub-nanometer variation of oxide layer produced by the thinning process.