Cognitive radio (CR) is regarded as an emerging technology, which equips wireless devices
with the capability to adapt their operating parameters on the fly based on the radio …

Physical-layer security (PLS) has the potential to strongly enhance the overall system
security as an alternative to or in combination with conventional cryptographic primitives …

Generating a shared key between two parties from the wireless channel is an increasingly
interesting topic. The process of obtaining information from the wireless channel is called …

The two-terminal key agreement problem with biometric or physical identifiers is considered.
Two linear code constructions based on Wyner-Ziv coding are developed. The first …

The key-leakage-storage region is derived for a generalization of a classic two-terminal key
agreement model. The additions to the model are that the encoder observes a hidden, or …

This thesis addresses security and privacy problems for digital devices and biometrics,
where a secret key is generated for authentication, identification, or secure computations. A …

Key extraction via measuring a physical quantity is a class of information theoretic key
exchange protocols that rely on the physical characteristics of the communication channel …

Most practical communication links are bidirectional. In these models, since the source node
also receives signals, its encoder has the option of computing its output based on the …

We study the state-dependent (SD) wiretap channel (WTC) with non-causal channel state
information (CSI) at the encoder. This model subsumes all instances of CSI availability as …

Motivated by recent interest in physical-layer secret-key generation over wireless fading
channels, we study the non-coherent secret-key generation capacity of a block-fading …