With the advent of Internet of Things (IoTs), secure communication between devices is a big challenge. Billions of new devices and sensors are going to be connected to the Internet. To ensure secure communication among these devices we need hardware primitives that are well suited to the requirements of IoTs. Recent research has led to an increased interest in security measures, especially in s...

The power of an accurate model for describing a physical process or designing a physical system is beyond doubt. The currently used reliability model for physically unclonable functions (PUFs) assumes an equally likely error for every evaluation of every PUF response bit. This limits an accurate description since experiments show that certain responses are more error-prone than others, but this...

The use of Physically Unclonable Functions (PUFs) in cryptographic protocols attracted an increased interest over recent years. Since sound security analysis requires a concise specification of the alleged properties of the PUF, there have been numerous trials to provide formal security models for PUFs. However, all these approaches have been tailored to specific types of applications or specif...

Silicon physical unclonable functions (PUFs) are security primitives relying on intrinsic randomness of IC manufacturing. Strong PUFs have a very large input-output space which is essential for secure authentication. Several proposed strong PUFs use timing races to produce a rich set of responses. However, these PUFs are vulnerable to machine-learning attacks due to linear separability of the o...

The stability of phenol-urea-formaldehyde (PUF) binder and 3-aminopropylsilane (APS) on composite silicate materials (fibers wafers) was studied with surface sensitive techniques (X-ray photoelectron spectroscopy (XPS) streaming potential) through a wide range humidity temperature ab initio modelling complemented the results. Behavior compared for wettability properties, determined by vapor ads...

i ABSTRACT The recent flurry of security breaches have raised serious concerns about the security of data communication and storage. A promising way to enhance the security of the system is through physical root of trust, such as, through use of physical unclonable functions (PUF). PUF leverages the inherent randomness in physical systems to provide device specific authentication and encryption...

Human exposure to elevated levels of polycyclic aromatic hydrocarbons (PAHs) and trace organic compounds (e.g. PCB, OCP, PBDE) can be related to negative health effects. This raises demands of exposure measurements to be performed. Passive air samplers (PAS) are simple and cheap sampling options that may be useful tools for exposure screening of large populations. They can also enable frequent ...

Physical Unclonable Functions (PUFs) have emerged as a promising alternative to conventional mobile secure authentication devices. Instead of storing a cryptographic key in non-volatile memory, they provide a device specific challenge-response behavior uniquely determined by manufacturing variations. The Arbiter PUF has become a popular PUF representative due to its lightweight design and poten...

Although numerous attacks revealed the vulnerability of different PUF families to non-invasive Machine Learning (ML) attacks, the question is still open whether all PUFs might be learnable. Until now, virtually all ML attacks rely on the assumption that a mathematical model of the PUF functionality is known a priori. However, this is not always the case, and attention should be paid to this imp...

This work reports on the immobilization and performance of a hydrocarbon-degrading microorganism on polyurethane foam (PUF) in the bioremediation of petroleum hydrocarbons. The ability of four different microorganisms to immobilize on PUF and to degrade various petroleum products (Arabian light crude (ALC), Al-Shaheen crude (ASC), diesel and oil slops) was assessed by measuring the n-alkane fra...