Annual Report 2010 - Fachgruppe Informatik an der RWTH Aachen ...

ability to store containers and cell trees on untrusted nodes strong encryption is needed. At
the same time some data like the containers holding file system descriptors must be readable
by everyone while still be resilient against manipulation.
From a security standpoint we face different problems. Besides the described security
concerns we need to reliably identify threats against our assets (cell trees and containers)
during every phase of development. In a next step mechanisms to negate these threats must be
identified. Eventually these mechanisms need to be evaluated in regards to generated network
load, classified according to evaluation and finally implemented. To help with this complex
process we are looking at security patterns, but finding the security patterns most suitable to
our unique problem remains a challenge. Currently there exists no global database or tool to
search for security patterns in a structured.
CAIRO - context aware intermodal routing
Uta Christoph, Karl-Hinz Krempels
Goal of the CAIRO project is to offer a navigation and assistance system for the public
transport on mobile devices (mobile or smart phones), which links static data (e.g. railway
stations, time schedules) with dynamic data (train delays, route changes for busses) into an
intermodal routing service.
With the help of this system users can be provided with individual information depending on
their current situation. For example, in case of delays on long distance travels alternative
routes can be determined. CAIRO achieves this by considering intermodal offers (e.g. trains,
busses, car or bycicle sharing possibilities) and traffic information of the public transport.
Thus for the first time an intermodal, dynamic routing is realized which takes into account the
current location of the user and real time data of the public transport system.
CAIRO is a joint project of Deutsche Bahn AG (DB Vertrieb GmbH), HaCon GmbH, InnoZ
GmbH, RWTH Aachen University, and VBB Verkehrsverbund Berlin-Brandenburg GmbH.
The Impacts of Next Generation Wireless Networks on Transport Protocols
Alexander Zimmermann
Future Mobile Web Services and Applications develop an ever-increasing demand for reliable
high-speed communication. In recent years, a new class of networks that aim to meet these
requirements have evolved: Wireless Mesh Networks (WMN). Since they provide a flexible
technology WMNs are easy to deploy in areas where the installation of a (wired)
infrastructure is impossible or too costly. Although their redundant, hierarchical and layered
architecture promise a self-organizing, -healing, and -configuring network the advantages
cannot be fully utilized due to protocol constrains. While efforts exists to improve the general
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