Privacy, Secrecy, and Storage With Multiple Noisy Measurements of Identifiers
Privacy, Secrecy, and Storage With Multiple Noisy Measurements of Identifiers
复制标题
DOI：
10.1109/tifs.2018.2834303
复制
发表时间：
2018-11-01
影响因子：
6.8
通讯作者：
Kramer, Gerhard
中科院分区：
文献类型：
--
作者：
Guenlue, Onur;Kramer, Gerhard
密钥泄漏存储区域是一个经典的两端密钥协商模型的推广。对模型的补充是编码器观察到标识符的隐藏或噪声版本，并且编码器和解码器可以执行多个测量。为了说明该区域的行为，该理论被应用到二进制标识符和噪声通过二进制对称信道建模。特别是，密钥泄漏存储区域被简化，通过在不同的方向应用Gerber夫人引理两次马尔可夫链。随着测量次数的增加，该区域的增长被量化。还给出了与编码器处的无噪声（可见）标识符相比，隐藏标识符的隐私泄漏率降低的量。如果编码器不正确地将源建模为可见的，则表明可能发生实质性的秘密泄漏，并且重构密钥的可靠性可能降低。
The key-leakage-storage region is derived for a generalization of a classic two-terminal key agreement model. The additions to the model are that the encoder observes a hidden, or noisy, version of the identifier, and that the encoder and decoder can perform multiple measurements. To illustrate the behavior of the region, the theory is applied to binary identifiers and noise modeled via binary symmetric channels. In particular, the key-leakage-storage region is simplified by applying Mrs. Gerber's lemma twice in different directions to a Markov chain. The growth in the region as the number of measurements increases is quantified. The amount by which the privacy-leakage rate reduces for a hidden identifier as compared to a noise-free (visible) identifier at the encoder is also given. If the encoder incorrectly models the source as visible, it is shown that substantial secrecy leakage may occur and the reliability of the reconstructed key might decrease.