Power data sharing method and system based on BGV homomorphic encryption and storage medium

The invention provides an electric power data sharing method and system based on BGV homomorphic encryption and a storage medium, through a BGV homomorphic encryption algorithm, the security of data during calculation and sharing is ensured, and the confidentiality of the data is ensured while the calculation service of an untrusted third party is used; data access control is realized through a CP-ABE attribute encryption scheme, so that when a plurality of clients send sharing requests to the same power measurement data, the to-be-shared data only needs to be encrypted once, the sharing efficiency is improved on the premise of ensuring the data security, the problems of large-scale real-time sharing and calculation of massive measurement data are solved, and the data sharing efficiency is improved. And the power data sharing efficiency and security are improved. 本发明提供一种基于BGV同态加密的电力数据共享方法、系统及存储介质，通过BGV同态加密算法，保证数据在计算与共享时的安全性，在使用不可信第三方的计算服务的同时，保证数据的保密性；通过CP-ABE属性加密方案实现数据访问控制，使多客户向相同的电力量测数据发出共享请求时，待共享的数据只需要1次加密，