Abstract: Satellite communication and its applications have become an important part in current social life. In order to ensure the secure transmission of satellite communication data, privacy protection of information, and to sovle the problem of dependency on the receiving side, a set of full proxy reencryption transmission model (FPRM) was proposed based on typical application scenarios of the transmission of low orbit constellation meteorological data. It was instantiated according to the satellite communication architecture to design a trusted proxy homomorphic transmission system. Computable ciphertext and full proxy transmission have been implemented by adding security of system communication and privacy protection to the mechanism. It is of great practical significance and values to integrate satellite, commercial data centers and Internet resources to reduce costs and improve resource utilization. Finally, it proves that the performance and data scalability of this model are feasible through experiments.

Key words: proxy re-encryption, homomorphic encryption, trusted execution environment, privacy protection, data transmission