own-publications.bib
@article{art-ijwmc,
author = {A. Ferscha and M. Hechinger and R. Mayrhofer and R. Oberhauser},
title = {A Peer-to-Peer Light-Weight Component Model for Context-Aware Smart
Space Applications},
journal = {International Journal of Wireless and Mobile Computing ({IJWMC}),
special issue on Mobile Distributed Computing},
year = {2004},
abstract = {Abstract—Mobile Peer-to-Peer (P2P) computing applications involve
collections of heterogeneous and resource-limited devices (such as
PDAs or embedded sensor-actuator systems), typically operated in
ad-hoc completely decentralized networks and without requiring dedicated
infrastructure support. Short-range wireless communication technologies
together with P2P networking capabilities on mobile devices are responsible
for a proliferation of such applications, yet these applications
are often complex and monolithic in nature due to the lack of lightweight
component/container support in these resource-constrained devices.
A threatening field of application is ``smart space'' control, i.e.
software architectures to control various home appliances and embedded
home facilities in a personalized, spontaneous and intuitive way.
Future home environments are expected to be highly populated by ubiquitous
computing technology, allowing to integrate various aspects of home
activities seamlessly into walls, floors, furniture, appliances,
and even clothing – thus raising the need for lightweight, versatile
and component based software architectures to harness such technology
rich environments.
In this paper we describe our lightweight software component model
P2Pcomp that addresses the development needs for mobile P2P applications.
An abstract, flexible, and high-level communication mechanism among
components is developed via a ports concept, supporting protocol
independence, location independence, and (a)synchronous invocations;
dependencies are not hard-coded in the components, but can be defined
at deployment or runtime, providing late-binding and dynamic rerouteability
capabilities. Peers can elect to provide services as well as consume
them, services can migrate between containers, and services are ranked
to support Quality-of-Service choices. Our lightweight container
realization leverages the OSGi platform and can utilize various P2P
communication mechanisms such as JXTA. A ``smart space'' application
scenario demonstrates how P2Pcomp supports flexible and highly tailorable
mobile P2P applications.},
documenturl = {http://www.mayrhofer.eu.org/downloads/publications/ijwmc2004-4-P2P-Component-Model.pdf},
issue = {4},
note = {extended version of \cite{paper-mdc2004}},
pubtype = {article}
}
@article{art-eurasip-embedded-systems,
author = {Alois Ferscha and Manfred Hechinger and Marcos dos~Santos~Rocha and
Rene Mayrhofer and Andreas Zeidler and Andreas Riener and Marquardt
Franz},
title = {Building Flexible Manufacturing Systems Based on Peer-Its},
journal = {{EURASIP} Journal on Embedded Systems},
year = {2008},
volume = {2008},
note = {Article {ID} 267560},
doi = {doi:10.1155/2008/267560},
pubtype = {article},
url = {http://www.hindawi.com/getarticle.aspx?doi=10.1155/2008/267560}
}
@article{art-transactions-mobile-2012,
author = {Rene Mayrhofer and J\"urgen Fuss and Iulia Ion},
title = {{UACAP}: A Unified Auxiliary Channel Authentication Protocol},
journal = {IEEE Transactions on Mobile Computing},
note_disabled = {Submitted 2011-06-15, accepted 2012-01-27},
year = {2012},
note = {\emph{accepted for publication in 2012}},
abstract = {Authenticating spontaneous interactions between devices and users
is challenging for several reasons: the wireless (and therefore invisible)
nature of device communication, the heterogeneous nature of devices
and lack of appropriate user interfaces in mobile devices, and the
requirement for unobtrusive user interaction. The most promising
approach that has been proposed in literature involves the exploitation
of so-called auxiliary channels for authentication to bridge the
gap between usability and security. This concept has spawned the
independent development of various authentication methods and research
prototypes, that, unfortunately, remain hard to compare and interchange
and are rarely available to potential application developers. We
present a novel, unified cryptographic authentication protocol framework
(UACAP) to unify these approaches and analyze its security properties.
This protocol and a selection of auxiliary channels aimed at authentication
of mobile devices has been implemented and released in an open source
ubiquitous authentication toolkit (OpenUAT). We also present an initial
user study evaluating four of these channels.},
documenturl_disabled = {http://www.mayrhofer.eu.org/downloads/publications/IEEE-TransMobComp-Shaking-final.pdf},
eventurl_disabled = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4796201},
note = {revised and extended version of \cite{report-eth2010-openuat}},
publisher = {IEEE},
pubtype = {article}
}
@article{art-transactions-mobile-2009,
author = {Rene Mayrhofer and Hans Gellersen},
title = {Shake well before use: Intuitive and Secure Pairing of Mobile Devices},
journal = {IEEE Transactions on Mobile Computing},
year = {2009},
volume = {8},
pages = {792--806},
number = {6},
month = {June},
note_disabled = {Submitted 2008-06-15, accepted 2009-02-10},
abstract = {A challenge in facilitating spontaneous mobile interactions is to
provide pairing methods that are both intuitive and secure. Simultaneous
shaking is proposed as a novel and easy-to-use mechanism for pairing
of small mobile devices. The underlying principle is to use common
movement as a secret that the involved devices share for mutual authentication.
We present two concrete methods, ShaVe and ShaCK, in which sensing
and analysis of shaking movement is combined with cryptographic protocols
for secure authentication. ShaVe is based on initial key exchange
followed by exchange and comparison of sensor data for verification
of key authenticity. ShaCK, in contrast, is based on matching features
extracted from the sensor data to construct a cryptographic key.
The classification algorithms used in our approach are shown to robustly
separate simultaneous shaking of two devices from other concurrent
movement of a pair of devices, with a false negative rate of under
12 percent. A user study confirms that the method is intuitive and
easy to use, as users can shake devices in an arbitrary pattern.},
documenturl = {http://www.mayrhofer.eu.org/downloads/publications/IEEE-TransMobComp-Shaking-final.pdf},
eventurl = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4796201},
note = {revised and extended version of \cite{paper-pervasive2007}},
publisher = {IEEE},
pubtype = {article}
}
@article{art-istr2008,
author = {Rene Mayrhofer and Hans Gellersen},
title = {Spontaneous Mobile Device Authentication based on Sensor Data},
journal = {Information Security Technical Report},
year = {2008},
volume = {13},
pages = {136--150},
month = {August},
abstract = {Small, mobile devices or infrastructure devices without user interfaces,
such as Bluetooth headsets, wireless LAN access points, or printers,
often need to communicate securely over wireless networks. Active
attacks can only be prevented by authenticating wireless communication,
which is problematic when devices do not have any a priori information
about each other. In this article, we describe three different authentication
methods for device-to-device authentication based on sensor data
from various physical out-of-band channels: shaking devices together,
authentication based on spatial reference, and transmission via visible
laser.},
documenturl = {http://www.mayrhofer.eu.org/downloads/publications/ISTR2008-Spontaneous-mobile-sensor-authentication.pdf},
doi = {10.1016/j.istr.2008.10.005},
eventurl = {http://dx.doi.org/10.1016/j.istr.2008.10.005},
issn = {1363-4127},
issue = {3},
note = {presents a summary and extension of four previous conference papers~\cite{paper-pervasive2007,paper-ubicomp2007,paper-wais2007,paper-twuc2006}.},
publisher = {Elsevier},
pubtype = {article}
}
@article{art-mobile-multimedia2007,
author = {Rene Mayrhofer and Roswitha Gostner},
title = {Using a Spatial Context Authentication Proxy for Establishing Secure
Wireless Connections},
journal = {Journal of Mobile Multimedia},
year = {2007},
volume = {3},
pages = {198--217},
number = {3},
month = {March},
abstract = {Spontaneous interaction in wireless ad-hoc networks is often desirable
not only between users or devices in direct contact, but also with
devices that are accessible only via a wireless network. Secure communication
with such devices is difficult because of the required authentication,
which is often either password- or certificate-based. An intuitive
alternative is context-based authentication, where device authenticity
is verified by shared context, and often by direct physical evidence.
Devices that are physically separated cannot experience the same
context and thus cannot benefit directly from context authentication.
We introduce a \emph{context authentication proxy} that is pre-authenticated
with one of the devices and can authenticate with the other by shared
context. This concept is applicable to a wide range of application
scenarios, context sensing technologies, and trust models. We show
its practicality in an implementation for setting up IPSec connections
based on spatial reference. Our specific scenario is ad-hoc access
of mobile devices to secure 802.11 WLANs using a mobile device as
authentication proxy. A user study shows that our method and implementation
are intuitive to use and compare favourably to a standard, password-based
approach.},
documenturl = {http://www.mayrhofer.eu.org/downloads/publications/MobileMultimedia-Spatial-Context-Auth-Proxy.pdf},
issn = {1550-4646},
publisher = {Rinton Press},
pubtype = {article}
}
@article{art-radiomatics2004,
author = {Rene Mayrhofer and Harald Radi and Alois Ferscha},
title = {Recognizing and Predicting Context by Learning from User Behavior},
journal = {Radiomatics: Journal of Communication Engineering, special issue
on Advances in Mobile Multimedia},
year = {2004},
volume = {1},
pages = {30--42},
number = {1},
month = {May},
note = {extended version of \cite{paper-momm2003}},
abstract = {Current mobile devices like mobile phones or personal digital assistants
have become more and more powerful; they already offer features that
only few users are able to exploit to their whole extent. With a
number of upcoming mobile multimedia applications, ease of use becomes
one of the most important aspects. One way to improve usability is
to make devices aware of the user’s context, allowing them to adapt
to the user instead of forcing the user to adapt to the device. Our
work is taking this approach one step further by not only reacting
to the current context, but also predicting future context, hence
making the devices proactive. Mobile devices are generally suited
well for this task because they are typically close to the user even
when not actively in use. This allows such devices to monitor the
user context and act accordingly, like automatically muting ring
or signal tones when the user is in a meeting or selecting audio,
video or text communication depending on the user’s current occupation.
This article presents an architecture that allows mobile devices
to continuously recognize current and anticipate future user context.
The major challenges are that context recognition and prediction
should be embedded in mobile devices with limited resources, that
learning and adaptation should happen on-line without explicit training
phases and that user intervention should be kept to a minimum with
non-obtrusive user interaction. To accomplish this, the presented
architecture consists of four major parts: feature extraction, classification,
labeling and prediction. The available sensors provide a multi-dimensional,
highly heterogeneous input vector as input to the classification
step, realized by data clustering. Labeling associates recognized
context classes with meaningful names specified by the user, and
prediction allows forecasting future user context for proactive behavior.},
documenturl = {http://www.mayrhofer.eu.org/downloads/publications/Radiomatics2004.pdf},
issn = {1693-5152},
publisher = {ITB Press},
pubtype = {article}
}
@article{art-ijpcc2011,
author = {Rene Mayrhofer and Alexander Sommer and Sinan Saral},
title = {Air-Writing: A Platform for Scalable, Privacy-Preserving, Spatial
Group Messaging},
journal = {International Journal of Pervasive Computing and Communications ({IJPCC})},
year = {2012},
volume = {8},
issue = {1},
pages = {53--78},
abstract = {Spatial messaging is a direct extension to text and other multi-media
messaging services that have become highly popular with the current
pervasiveness of mobile communication. It offers benefits especially
to mobile computing, providing localized and therefore potentially
more appropriate delivery of nearly arbitrary content. Location is
one of the most interesting attributes that can be added to messages
in current applications, including gaming, social networking, or
advertising services. However, location is also highly critical in
terms of privacy. If a spatial messaging platform could collect the
location traces of all its users, detailed profiling would be possible
- and, considering commercial value of such profiles, likely.},
issue = {3},
owner = {rene},
pubtype = {article},
issn = {1742-7371},
doi = {10.1108/17427371211221081},
timestamp = {2011.06.07},
eventurl = {http://www.emeraldinsight.com/journals.htm?articleid=17024855&ini=aob}
}