Telephone:+49 6151 16-25477
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Technische Universität Darmstadt
Department of Computer Science
- Denial-of-Service (DoS) attacks and mitigation
- Wireless Multihop Networks (Mobile Ad hoc Networks, Disruption-/Delay-Tolerant Networking)
- Emergency communication
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Security Aspects of the Apple Wireless Direct Link Protocol
Draining Mallory and Sybil: DoS-resistant Disruption-Tolerant Networks
Disruption-Tolerant Networks (DTNs) can be used as a communication means in the emergency context when communication infrastructure is unavailable. In DTNs, mobile user devices such as smartphones act as “data mules”: they store, carry and forward messages. Unfortunately, the “storing” part is especially
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Practical Performance Analysis of Neighbor Awareness Networking
Experimental Evaluation of Mobile Attacks on Ad hoc Routing Protocols
Practical Defense Against Pollution Attacks in Network Coding-based Systems
Network Coding has many positives properties that make it especially suitable for Wireless Multihop Networks . Network Coding can be used to increase the effective capacity of the network, by coding (simplest form: bit-wise XOR) together packets of different flows and forwarding them in a single broadcast
Understanding the Apple Auto Unlock Protocol
The Apple Watch provides the ability to automatically unlock a device running macOS when in proximity. The underlying proprietary protocol is called Auto Unlock (AU) and differs from other smart locking
Reverse Engineering the Apple Wireless Direct Link Protocol
Abstract of final thesis:
Apple Wireless Direct Link (AWDL) is a proprietary and undocumented 802.11 based peer-to-peer protocol. It is implemented in all of Apple's operating systems. In this thesis a reverse engineering method using
Neighbor Discovery and Maintenance under Mobility in mmWave-based Mesh Networks
Design, Implementation and Evaluation of Realistic Scenarios and Movement Models for Natural Disasters Using Simulations for Delay Tolerant Networks
Seeing the continuous increase in natural disasters around the world, many people are contemplating how to contribute helping those in need. Among them are several computer scientists who fulfil their share by developing technology which enables fast and reliable communication in disaster areas. We were inspired by their work and thus wanted to further improve the state-of-the-art. DTN is a specific technology which can be used for the creation of alternative networks in disaster areas, where conventional ones are unavailable due to the inevitable destructions implied by the disaster. Given that such technology is usually evaluated within network simulators we exclusively focus on improving the state-of-the-art of movement models and scenarios utilized within such simulators. The very random driven, and thus not realistic, state-of-the-art is improved by our contribution in the form of a fully designed, implemented, and evaluated realistic natural disaster movement model with underlying scenarios. The results of our evaluation indicate that previously published results might be too optimistic. Thus, further approximations to reality are inevitable for more accurate simulation of DTN, in the goal to ultimately obtain better and more realistic results.
In-depth Analysis of Apple's Multipeer Connectivity Framework
Efficient Neighbour Discovery with Adjustable Antenna Beams in Highly Directional 60 GHz Mesh Networks
- Network Security (NetSec), Integrated Course, SS 2015, SS 2016, SS 2017, SS 2018
- Selected Lecture in Secure Mobile Systems (SeMoSy), Integrated Course, SS 2016, SS 2017, SS 2018
- Selected Lecture in Allgemeine Informatik I, Lecture, SS 2016
- Selected Topics in (Advanced) Seminar on Networking, Security, Mobility, and Wireless Communications, WS 2015/16, SS 2016, SS 2018
- Selected Topics in Secure Mobile Networking Lab/Project, SS 2015, WS 2015/16, SS 2016, WS 2017/18