Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 60 for “"Eavesdropping"”.
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Defeating eavesdropping with quantum illumination
… has shown how it can be used to defeat passive eavesdropping on a two-way Alice-to-Bob-to-Alice communication protocol, in which the eavesdropper, Eve, merely listens to Alice and Bob's transmissions. This thesis extends that work in several ways. First, it derives a lower bound on information …
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Eavesdropping on speech in wild carrion crows
… as an indicator to human presence (similar to eavesdropping on predator calls) and have subsequently habituated to Japanese, the locally spoken language. In this thesis, I aimed to investigate this response to speech in another corvid species, the carrion crow (Corvus corone). I found that wild …
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Eavesdropping risks of the DisplayPort video interface
… images produced by applying previously published eavesdropping techniques to DisplayPort appear as random noise, and the interface is thought to be a far more difficult target. I start by showing that DisplayPort is vulnerable to electromagnetic eavesdropping, assuming that the displayed image …
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Robotic Eavesdropping: Effects of Bioinspired Acoustic Sensing on Tracking and Estimation
… that more data may become available to the eavesdropping bat. Taking bioinspiration from these suggested abilities, we seek to explore the question of how fusing active and passive ultrasonic sensing may effect the information available to a robotic vehicle. Our first investigation was an …
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A field study of the Cape ground squirrel's eavesdropping behaviour in Namibia
A thesis submitted in partial fulfilment of the requirements for the Degree of MSc of Biodiversity Research and Management of the University of Namibia
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Quantum cryptography : security analysis of multiuser quantum communication with embedded authentication
… vulnerabilities. Furthermore, the impact of the eavesdropping test procedure on impersonation attacks is outlined. The framework of a general eavesdropping test is proposed to provide additional protection against security risks in impersonation attacks.
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Data-driven Estimation of Low-Power Long-Range Signal Parameters by an Unauthenticated Agent using Software Radio
… bands that are susceptible to interference, eavesdropping, and Denial-of-Service (DoS) attacks. In this work, we consider a popular low-power, long-range communication protocol known as LoRa. Despite LoRa's high tolerance for noise and interference, it was found vulnerable to interference …
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Exploiting quasiperiodic electromagnetic radiation using software-defined radio
… nearly periodic in the short term. Video-eavesdropping attacks on these, a main motivation for the use of TEMPEST shielded equipment in security-critical applications, have evolved little since first publicly demonstrated by van Eck in 1985. I investigate digital signal processing …
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Security and Privacy Analysis of Embedded Wireless Systems
… and discovered that the system is vulnerable to eavesdropping and packet spoofing attacks. The second system, AMR, is a wireless data collection system for utility (gas, water, electric) meters. These systems wirelessly transmit periodic meter reading, allowing a mobile receiver without any …
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A game-theoretic approach to the security of emerging cognitive radio and small cell networks
… Here, the SUs aim at mitigating the effect of eavesdropping by changing their positions using only partial information about the locations of the eavesdroppers. Accordingly, for each SU, we propose an appropriate utility function and then maximize the social welfare of all SUs without …
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Tomographic quantum cryptography with bell diagonal states
… of Bell diagonal states that are resistant to eavesdropping attacks will be identified.In the second part of this thesis, the security of the tomographic protocol using a source which produces entangled photons via an experimental scheme proposed in Phys. Rev. Lett. 92, 37903 (2004) will be …
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Secure OFDM System Design for Wireless Communications
… communication systems, so as to prevent passive eavesdropping. The last technique provides an embedded confidential signaling link for secure transmitter-receiver interaction in OFDM systems.
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An optical system for line-of-sight communication
… avoiding the dangers of detection, jamming, and eavesdropping that traditional omnidirectional radio transmission entails. On the receiving end, a wide-angle detector is used. The system is integrated inconspicuously into a military vest, allowing the wearer to communicate while on the field. In …
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WhanauSIP : a secure peer-to-peer communications platform
… conferencing that is resilient to censoring, eavesdropping, and forgery. Performance and security evaluations performed on the PlanetLab network demonstrate that the majority of resource lookups return within five seconds. These results indicate that WhanauSIP delivers practical performance …
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Evaluating the Proliferation and Pervasiveness of Leaking Sensitive Data in the Secure Shell Protocol and in Internet Protocol Camera Frameworks
… other leveraging the same paradigm as a case of eavesdropping on Internet Protocol (IP) cameras. For the latter case, we construct a web portal for interrogating IP cameras directly for information that they may be exposing.
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Adaptive Beam Management for Secure mmWave Communication
… making millimeter wave links more resilient to eavesdropping and jamming attacks. However, the millimeter wave radios locate each other and establish communica- tion by exhaustively probing all possible angular directions, increasing their susceptibility to attacks. In this thesis, we showcase a …
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Micro-Moving Target IPv6 Defense for 6LoWPAN and the Internet of Things
… to thwart a potential attacker from performing eavesdropping, denial-of-service, or man-in-the-middle attacks. We present our work in establishing this security mechanism and analyze the required control overhead on the wireless network.
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Organized crime in the United States organizational analogies for counterinsurgency strategy
… informants, wiretaps and electronic eavesdropping to expose organized crimeâ s largely invisible network. Based on the similarities between organized crime families and insurgent organizations, law enforcement tactics and their applicability to modern counterinsurgency doctrine are an …
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Physical layer encryption using fixed and reconfigurable antennas
… the problem of securing that communication from eavesdropping was left to mathematical cryptography. Recent research into physical layer encryption shows that jointly designing for reliability and secrecy at the physical layer may be a better solution. Physical layer encryption involves …
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Design And Hardware Implementation Of A Novel Scrambling Security Algorithm For Robust Wireless Local Area Networks
… used to protect link-layer communications from eavesdropping and other attacks. It allows user to communicate with the user; sharing the public key over a network. It provides authentication and encrypted communications over unsecured channels. However, WEP protocol has an inherent security …
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