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An Authentication Protocol with Encrypted Biometric Data

机译:带有加密生物特征数据的身份验证协议

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At ACISP'07, Bringer et al. introduced a new protocol for achieving biometric authentication with a Private Information Retrieval (PIR) scheme. Their proposal is made to enforce the privacy of biometric data of users. We improve their work in several aspects. Firstly, we show how to replace the basic PIR scheme they used with Lipmaa's which has ones of the best known communication complexity. Secondly, we combine it with Secure Sketches to enable a strict separation between on one hand biometric data which remain the same all along a lifetime and stay encrypted during the protocol execution, and on the other hand temporary data generated for the need of the authentication to a service provider. Our proposition exploits homomorphic properties of Goldwasser-Micali and Paillier cryptosystems.
机译:在ACISP'07上,Bringer等人。引入了一种新的协议,该协议可通过私有信息检索(PIR)方案实现生物特征认证。他们提出了加强用户生物识别数据隐私的建议。我们从几个方面改进他们的工作。首先,我们展示如何用具有众所周知的通信复杂性的Lipmaa替代他们使用的基本PIR方案。其次,我们将其与安全草图相结合,以实现严格的区分,一方面,生物特征数据在整个生命周期中保持不变,并在协议执行期间保持加密;另一方面,生成临时数据以用于身份验证服务提供商。我们的主张利用了Goldwasser-Micali和Paillier密码系统的同态性质。

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