Abstract: Secure data aggregation aims at realizing the end-to-end confidentiality and authentication of the data, which is collected and aggregated by sensor. End-to-end confidentiality is usually guaranteed by the privacy homomorphic encryption. However, the homomorphic authentic schemes are not multi-source and multi-message. For the contradictions between the end-to-end authentication and the data aggregation, a secure data aggregate authentic scheme was proposed. A secure data aggregate protocol was constructed with the proposed authentic scheme and a homomorphism encryption scheme. Security analysis result shows that the proposed data aggregate protocol can obtain the end-to-end confidentiality and authentication of the collected data.

Key words: Wireless sensor networks, Secure data aggregation, Privacy homomorphism, End-to-end confidentiality, End-to-cnd authentication