强保密生物特征识别系统的基本极限
Fundamental Limits of Biometric Identification Systems with Strong Secrecy
摘要：
研究了在强保密准则下生物特征识别系统的基本极限。在以前的研究中，这种情况下，基本的权衡之间的秘密，模板，隐私和secondary泄漏已被发现的情况下，只有一个用户，而多个用户的情况下尚未讨论。在这项研究中，我们考虑了系统的指数多个用户，我们刻画了强保密准则下的容量区域的速率元组，包括用户（识别）率。在可扩展性证明中，我们推导出一种新的方法，通过扩展一个用户的情况下的随机分仓，将多个用户。所得结果表明，无论弱或强保密标准的秘密泄漏的能力区域的特征不改变。
英文摘要：
The fundamental limits of biometric identification systems under a strong secrecy criterion are investigated. In the previous studies of this scenario, the fundamental trade-off among secrecy, template, privacy- and secrecy-leakages has been revealed in the case where there is only one user, while the case of multiple users has not been discussed yet. In this study, we consider the system with exponentially many users, and we characterize the capacity region of the rate tuples including the user (identification) rate under the strong secrecy criterion. In the achievability proof, we derive a new method to incorporate multiple users by extending the random binning for one user's case. The obtained result shows that the characterization of the capacity region does not vary regardless of the weak or strong secrecy criterion in terms of secrecy-leakage.
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