Aggregation trees have been proposed for privacy preservation to reduce data collectors’ computational cost in smart grids. In aggregation tree models, smart meter usage data should be forwarded by all its ancestors, which delays usage data transmissions. We report the design of an identity-based signcryption protocol without oracles for aggregation trees. The designed protocol significantly reduces smart meter computational costs due to its homomorphic features. (1) Compressed signatures can be verified in batches. The computational cost of verification is independent of the number of usage reports. (2) A smart meter can generate a signature on the aggregated cipher without executing signing algorithms during transmissions. Extensive simulations demonstrate that, based on the proposed protocol, the communication efficiency of our privacy preservation scheme outperforms other aggregation tree-based schemes regarding transmission delay and computational cost.

中文翻译：

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智能电网中逐跳数据聚合的高效签密协议

已经提出聚合树用于隐私保护，以减少智能电网中数据收集器的计算成本。在聚合树模型中，智能电表使用数据应该由其所有祖先转发，这会延迟使用数据传输。我们报告了一种基于身份的签密协议的设计，该协议没有用于聚合树的预言机。由于其同态特征，设计的协议显着降低了智能电表的计算成本。(1) 压缩后的签名可以批量验证。验证的计算成本与使用报告的数量无关。(2) 智能电表可以在聚合密码上生成签名，而无需在传输过程中执行签名算法。大量模拟表明，基于所提出的协议，