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A P2P Anonymous Communication Scheme in IOT Based on Blockchain

摘要


In order to ensure the anonymity and non-traceability of the identity of Internet of things devices across administrative domains, an anonymous communication scheme based on alliance blockchain is proposed. Centralized identity authentication and decentralized message communication mechanisms are implemented by dividing the base domain and the interconnect domain. The zero-knowledge proof of identity is based on the identity authentication mechanism of the Merkle-tree. Further, the aggregation signature privacy protection scheme based on the CoinJoin idea is proposed to confuse the domain manager node identity to resist the identity association analysis attack. Finally, a consensus mechanism based on reputation evaluation strategy is proposed for message consistency. Security and efficiency analysis show that the proposed solution can protect identity privacy with lower storage and computational overhead.

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