Trust and reputation calculation is based on data fusion gathered from different data resources, which lead to have a more precise and reliable result. The aim of this research work is the investigation of existing computational model of trust and reputation and finds the more suitable one in the realm of self-organized networks.

This project focuses on attacks and defence mechanisms in reputation systems. The aim is to classify attacks against reputation system components (formulation, calculation and dissemination) and investigate the appropriate defence mechanism to make these systems resilient to attacks.

The aim of this master thesis is the investigation of existing simulator environment for trust and reputation system like TRMSim and tries to simulate trust and reputation data dissemination using agent-based algorithm (e.g ant colony system)

Currently single radio mesh networks loose significant throughput capacity with every additional hop. While on a simple 6 Mbps channel 1 hop achieves 4,3 Mbps 8 hops decrease to 0,9 Mbps. This project focuses on current 802.11s D3.0 implementation in ns3. The aim is to implement a multi radio channel assignment algorithm that solves the multihop collision domain problem. Inside of this scope you will be implementing a certain missing element, such as channel switch algorithm, channel reassignment for peerlink management protocol or the datastructure for the channel assigment decision system. You should be/make yourself familiar with network simulation environments http://nsnam.org and be profficient with C++ programming.

Electronic voting is a challenging cryptographic problem, especially if voter privacy should be ensured. The first aim of the projects/thesis is to elaborate a framework for a centralised electronic voting system with maximum voter privacy. As a special challenge we assume that the system is only used by a small number of known voters. The second aim of the projects/thesis is to develop and test a implementation of the framework.

Student: David Goltzsche

MAC layer protocols normally presume that nodes follow the multiple access scheme and are hence vulnerable to DoS attacks in case of presence of misbehaving nodes. The purpose of this Project/Master Thesis is to investigate the possible MAC-layer DoS attacks and their impact on the network throughput using OMNeT++. Finally, based on the obtained results, solutions might be suggested and investigated.

Student: Mohamad Hotait

Coming soon ..

Student: Ingo Keil

The aim of this Master thesis is to implement an agent-based trust model using Qualnet. The trust dissemination model is applied for providing self-organized authentication mechanism for mobile ad-hoc networks using Ant Colony Systems.

Student: Hang Zhang

In this work a trust and reputation framework for sensor networks is investigated. This model is based on Bayesian formulation, specifically a beta reputation system, for reputation representation, updates and integration.

Student: Sanaz Karimkhani Asl

This project analyses how big a wireless mesh network can become and finds usefull scenarios, but general limitations. The results are subject to IFIP conference, WCITD 2010 proceedings.

Student:

In this thesis network layer attacks in WSNs should be explored and classified. Afterwards, these attacks should be implemented in the simulation environment OMNeT++ using the Mixim framework.

Student: Chen

This master thesis is focused on research and development of a Wireless Mesh Capacity analysis tool, based on nominal capacity calculations, implemented in java.

Student: T.Waage

The aim of this thesis is to design a reference model for effective reputation information systems using Unified Modeling Language (UML). The model tries to address personal and organizational reputation. It includes the concepts of soft trust (recommendation of customers) and hard trust (certificate from a trusted party). Then the work discusses about possible reasons that cause differences for these two kind of trust for an on-line shop.

Student: Afagh Khodadadi

In this thesis some ideas on design of one anonymous multicast routing protocol for mobile ad hoc networks will be implemented and evaluated. Actually some ideas from unicast anonymous routing protocols will be extended to multicast. The implementation should be done in Qualnet. This work fulfills the requirements for a Master thesis.

Student: Salke Hartung

This project will result in implementation and evaluation of some ideas to provide MANET routing protocols with some privacy properties. The implementation is done in Qualnet. It will fulfill the requirements for a project work for a Master student.

Student: Salke Hartung

This project explores the WSNs structure and TinyOS system especially based on the sensor node (Iris) used in the lab of Telematics Group, University of Goettingen and illustrates the important characteristics of TinyOS. Furthermore it discusses the sensor sensing challenge by using the related sensor board. In general Wireless Sensor Networks (WSNs) are designed to monitor physical or environmental conditions through the cooperative working of a large number of distributed autonomous sensors . Due to the diversity of applications of WSNs, TinyOS which is an open source operating system started by University of California, Berkeley in 1999 intended for WSNs is becoming even more popular involving thousands of academic and commercial developers and users worldwide.

Student: Geyu Chen