无线传感器网中基于隐私同态的数据聚合方案

Data Aggregation Scheme Based on Privacy Homomorphism for WSN

DF数据聚合方案在加/解密时采用相同的秘钥,因此不能有效抵抗已知明文攻击、捕获攻击及中间人攻击。为解决该问题,提出一个适用于无线传感器网络的数据聚合方案。该方案利用一次一密的双重加密机制,多资源节点在加/解密时采用不同的密钥,从而有效抵抗明/密文攻击、捕获攻击以及中间人攻击。同时,基于隐私同态技术进行数据加密,使得聚合数据时无需解密,保证了数据机密性和用户的隐私性。分析结果表明,与SDAP和SEDA方案相比,该方案具有较强的前向安全性和较低的存储开销。

There is only a same key in Domingo-Ferrer （DF） data aggregation scheme while encryption/decryption,therefore it can not resist the known plaintext attack,capture attack,etc.In order to solve these problems,this paper proposes a data aggregation scheme based on Privacy Homomorphism （PH） mechanism.The scheme adopts a double encryption mechanism of one-time pad,multi-resource node uses different key while encryption/decryption,so that it can be effectively against plaintext/ciphertext attack,compromising attack and man-in-middle attack.It does not decrypt while aggregating,so need not the extra decryption overhead,and at the same time it ensures the confidentiality of the data and user＇ s privacy.Analysis result shows that this scheme has strong forward security and lower storage cost compared with the SDAP and SEDA scheme.