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Forensic investigations are usually conducted to solve crimes committed using IT systems as pertetrator and/or victim. However, depending on the size of IT system, also nonmalicious incidents can be investigated using the same, methodological and proven techniques. Based upon the principles contained in the well known computer incident taxonomy, this paper proposes the establishment a common language...
In this paper we show how to extract graphics content within a memory dump of a windows-based system. This includes the assurance of integrity and authenticity of evidence gathered this way using cryptographic mechanisms. We introduce a forensic data model and investigate different forensic analysis steps within a phase-oriented manner to classify potential forensic methods. Furthermore we discuss...
The integration of seat occupancy detection systems is one of the most recent developments in automobile production. These systems prevent the deployment of airbags at unoccupied seats, thus avoiding the considerable cost imposed by the replacement of airbags. Seat-occupancy detection system can also be used to improve passenger comfort, e.g. by an occupation-dependent control of air-conditioning...
Contrary to cryptographic hash functions, which calculate the same value for only the same input, biometric hash functions have to generate identical hashes from varying input data of the same person. In this paper a secure sketch method is suggested that was developed to generate hash values from dynamic handwritten data. The presented secure sketch method is motivated by the framework suggested...
In this paper we visit annotation watermarking as a tool to embed information about a cover or parts thereof in the cover. We describe a framework for image annotation watermarking, especially Nested Object Annotation Watermarking. This was introduced in earlier works to embed not only textual and/or semantic descriptions as annotations but also their relationships with each other. The framework describes...
Modern cars offer an increasingly powerful multimedia environment. While also the potential for an application as human computer interface (HCI) is growing, in this paper we concentrate on already existing possibilities for their use as computer-human-interface (CHI) to communicate system security related information to the driver. After identifying the intrusion detection approach from desktop IT...
This paper presents a new concept of an approach to evaluate the assurance of the audio quality and its impact on the security of mobile phones used as multimodal user guides at the same time. Differently caused interferences can influence the subjectively perceived audio signal. Finding objective measure values acts as the motivation for the development of the presented model. This model to evaluate...
A stroke point matching by dynamic time warping (DTW) and strokes wise segment alignment by using spline interpolation for time and coordinate signals are presented in this paper. The algorithm uses both the features and signals based verification methodologies. The top-level in signature representation deals with the global geometric shape. This method will verify not only the signature shape but...
According to former results from (Dittmann et al., 2005) in this paper we summarize the design principles from the general approach and introduce extended experimental test results of a voice-over-IP (VoIP) framework including a steganographic channel based on (Dittmann et al., 2005), (Dittmann and Hesse, 2004), (Kraetzer et al., 2006) and (Vogel et al., 2006). We show that using this framework it...
In this paper an approach for combining online signature authentication experts will be proposed. The different experts are based on one feature extraction method presented in our earlier work, the Biometric Hash algorithm [C. Viehauer, et al., (2002)], to which different distance measurement functions are applied. We will show that by the fusion of several algorithms with an appropriately parameterized...
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