Irreversibility Analysis of Feature Transform-Based Cancelable Biometrics
- Cite this paper as:
- Rathgeb C., Busch C. (2013) Irreversibility Analysis of Feature Transform-Based Cancelable Biometrics. In: Wilson R., Hancock E., Bors A., Smith W. (eds) Computer Analysis of Images and Patterns. CAIP 2013. Lecture Notes in Computer Science, vol 8048. Springer, Berlin, Heidelberg
Technologies of cancelable biometrics protect biometric data by applying transforms to biometric signals which enable a comparison of biometric templates in the transformed domain. Thereby biometric data is permanently protected, preventing identity fraud and privacy violation. The inversion of transformed biometric signals must not be feasible for potential attackers, i.e. irreversibility must be guaranteed.
In this work we propose a theoretical estimation of the irreversibility of generic cancelable biometric systems. Based on a general formalization of cancelable feature transforms the complexity of reverse engineering is evaluated, quantifying the security provided by the respective approach. In addition, examples are presented which clearly point at the security provided by existing approaches.
KeywordsBiometrics template protection cancelable biometrics irreversibility analysis feature transforms
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