Homomorphic integrity and confidentiality protection for data aggregation in the digital twin environment with high efficiency

Digital twin is a novel technology that has achieved significant progress in industrial manufacturing systems in recent years. In the digital twin environment, entities in the virtual space collect data from devices in the physical space to analyze their states. However, since a lot of devices exist in the physical space, the digital twin system needs to aggregate data from multiple devices at the edge gateway. Homomorphic integrity and confidentiality protections are two important requirements for this data aggregation process. Unfortunately, existing homomorphic encryption algorithms do not support integrity protection, and existing homomorphic signing algorithms require all signers to use the same signing key, which is not feasible in the digital twin environment. Moreover, for both integrity and confidentiality protections,…