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Cryptanalysis of a Privacy-Preserving Aggregation Protocol

机译:隐私保护聚合协议的密码分析

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摘要

Privacy-preserving aggregation protocols allow an untrusted aggregator to evaluate certain statistics over a population of individuals without learning each individual’s privately owned data. In this note, we show that a recent protocol for computing an aggregate sum due to Jung, Li, and Wan (IEEE Transactions on Dependable and Secure Computing, 2015) is universally breakable, that is, anyone is able to recover each individual’s private data from the corresponding ciphertext. We also describe an alternate collusion attack against their companion product protocol.
机译:保留隐私的聚合协议允许不受信任的聚合器在不了解每个人的私有数据的情况下评估整个人口中的某些统计信息。在本说明中,我们表明,用于计算由Jung,Li和Wan导致的合计金额的最新协议(IEEE可靠和安全计算交易,2015年)是通用的,也就是说,任何人都可以恢复每个人的私有数据来自相应的密文。我们还描述了针对其配套产品协议的另一种共谋攻击。

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