Olaf Henniger

Learn More
This paper considers security requirements for automotive on-board networks and describes the processes used for identifying and prioritizing such requirements. The security engineering process starts from use cases for automotive onboard networks that require wireless communication interfaces and involves an investigation of security threat scenarios and(More)
The software running on electronic devices is regularly updated, these days. A vehicle consists of many such devices, but is operated in a completely different manner than consumer devices. Update operations are safety critical in the automotive domain. Thus, they demand for a very well secured process. We propose an on-board security architecture which(More)
Control and data flow aspects of a distributed system can be identified through the analysis of control and data dependencies that exist not only within processes, but also across process boundaries. This paper proposes a non-interleaving model that exposes the intra-process as well as inter-process control and data dependencies in a specification of a(More)
In this paper, we present an algorithm for generating test purpose descriptions in form of MSC’s from a given labeled event structure that represents the behavior of a system of asynchronously communicating extended finite state machines. The labeled event structure is a non-interleaving behavior model describing the behavior of a system in terms of the(More)
This paper describes a biometric method for user authentication on smart cards. Smart cards are chip cards with the ability for data processing directly on the card. They are not only usable for storing biometric reference data, but biometric user authentication methods can also be performed on card in order to protect security-relevant functions or data on(More)
Human signatures are widely used for biometric authentication. For automatic online signature verification, rather than storing an image of the completed signature, data are represented in the form of a time series of pen position and status information allowing the extraction of temporal-based features. For visualisation purposes, signature images need to(More)