This project, led by Prof. Ren Kui from CCST, won the first prize of Zhejiang Provincial Natural Science Award. The project focuses on three key scientific issues: loss of access control of outsourced data, obstacles to search encrypted data, and difficulties in encrypted data calculation. The project reveals the relevant laws of the balance between outsourcing service efficiency and security. It also proposes new theories, technologies and methods for remote data secure storage, search and calculation. The project addresses the serious problem of insufficient security guarantee after user data is uploaded to the cloud, and ensures data security while keeping high computing efficiency, which is of great theoretical significance. The researchers have published 134 high-level papers, with a total of more than 30,000 Google Scholar citations. The project outcomes have been successfully applied in the cloud computing platforms of Huawei, Hangzhou City Brain, H3C and other companies.
