Cancelable biometrics are a group of techniques to transform the input biometric to an irreversible feature intentionally using a transformation function and usually a key in order to provide security and privacy in biometric recognition systems. This transformation is repeatable enabling subsequent biometric comparisons. This paper is introducing a new idea to exploit as a transformation function for cancelable biometrics aimed at protecting the templates against iterative optimization attacks. Our proposed scheme is based on time-varying keys (random biometrics in our case) and morphing transformations. An experimental implementation of the proposed scheme is given for face biometrics. The results confirm that the proposed approach is able to withstand against leakage attacks while improving the recognition performance.
翻译:可取消的生物鉴别技术是一种将输入的生物鉴别技术转换成不可逆转特征的技术,它有意使用转化功能,通常是在生物鉴别识别系统中提供安全和隐私的关键。这种转换可以重复进行,便于随后进行生物鉴别比较。本文件提出一种新的想法,即作为可取消的生物鉴别技术的一种转换功能,旨在保护模板不受迭接优化攻击。我们提议的方案基于时间变化键(我们案例中的随机生物鉴别技术)和变形变形。对面生物鉴别技术试行了拟议方案。结果证实,拟议方法能够在提高识别性能的同时抵御渗漏攻击。