International Journal of Scientific Research and Management
Cloud computing has emerging as a promising pattern for data outsourcing and high-quality data services. However, a concern of sensitive information on cloud potentially causes privacy problems. Data encryption protects data security to some extent, but at the cost of compromised efficiency. To observe that server-side ranking based on Order-Preserving Encryption (OPE) inevitably leaks data privacy. To eliminate the leakage, traditional method uses a Two-Round Searchable Encryption (TRSE) scheme that supports top-k multikeyword retrieval. The TRSE method employs a vector space model and homomorphic encryption.