Logo des Repositoriums

Auflistung nach Autor:in "Niesing, Matthias"

1 - 4 von 4
  • Konferenzbeitrag
    A cryptographic biometric authentication system based on genetic fingerprints
    (SICHERHEIT 2008 – Sicherheit, Schutz und Zuverlässigkeit. Beiträge der 4. Jahrestagung des Fachbereichs Sicherheit der Gesellschaft für Informatik e.V. (GI), 2008) Korte, Ulrike; Krawczak, Michael; Merkle, Johannes; Plaga, Rainer; Niesing, Matthias; Tiemann, Carsten; Vinck, Han; Martini, Ullrich
    We specify a system for authentication and key derivation using genetic fingerprints which prevents the recovery of biometric information from data stored for verification. We present a detailed security analysis based on estimates of the entropy of the DNA data and formal security results. The scheme is shown to be robust and efficient by analysing the typical frequency and structure of errors in DNA measurements and selecting appropriate error correcting codes. As a result we obtain an authentication system that offers a security level equivalent to cryptographic keys with 73 bits and a FRR well below 1%.
  • Konferenzbeitrag
    Multibiometrie – mehr als nur multimodal
    (BIOSIG 2007: biometrics and electronic signatures, 2007) Radestock, Katrin; Niesing, Matthias
    In der Biometrie bezeichnet „multimodal“ die Verwendung von mehreren biometrischen Verfahren zur Authentifizierung von Personen. Multimodalität umfasst jedoch nur ein Teil der Möglichkeiten, Ergebnisse in einem biometrischen System zu kombinieren. Dieser Artikel zeigt weitere Methoden der Multibiometrie. Darüber hinaus wird dargestellt, auf welchen Ebenen Fusionen von (Zwischen-)Ergebnissen erfolgen können. Die vorgestellten Verfahren werden am Beispiel des neuen ePass mit Gesicht und Fingerabdrücken exemplarisch erläutert.
  • Konferenzbeitrag
    Performance of the fuzzy vault for multiple fingerprints
    (BIOSIG 2010: Biometrics and Electronic Signatures. Proceedings of the Special Interest Group on Biometrics and Electronic Signatures, 2010) Merkle, Johannes; Niesing, Matthias; Schwaiger, Michael; Ihmor, Heinrich; Korte, Ulrike
    The fuzzy vault is an error tolerant authentication method that ensures the privacy of the stored reference data. Several publications have proposed the application of the fuzzy vault to fingerprints, but the results of subsequent analyses indicate that a single finger does not contain sufficient information for a secure implementation. In this contribution, we present an implementation of a fuzzy vault based on minutiae information in several fingerprints aiming at a security level comparable to current cryptographic applications. We analyze and empirically evaluate the security, efficiency, and robustness of the construction and several optimizations. The results allow an assessment of the capacity of the scheme and an appropriate selection of parameters.
  • Konferenzbeitrag
    A reference framework for the privacy assessment of keyless biometric template protection systems
    (BIOSIG 2010: Biometrics and Electronic Signatures. Proceedings of the Special Interest Group on Biometrics and Electronic Signatures, 2010) Kevenaar, Tom; Korte, Ulrike; Merkle, Johannes; Niesing, Matthias; Ihmor, Heinrich; Busch, Christoph; Zhou, Xuebing
    Over the past decades, a number of methods have been reported in the scientific literature to protect the privacy of biometric information stored in biometric systems. Keyless Biometric Template Protection (KBTP) methods aim to protect biometric information without the use of long-term secrets by deploying one-way functions. These KBTP methods are currently developed to an extent that commercial products have become available. When assessing and comparing different KBTP methods it is important to have a common and generic approach. Therefore, in this paper we present a reference framework that can be used in assessing and comparing the privacy properties of KBTP systems.