一种基于同态加密的云存储安全算法研究

A Research on Cloud Storage Security Algorithm Based on Homomorphic Encryption

通过对同态加密技术的研究与分析,针对目前云存储面临的数据安全问题,提出了一个改进后的整数同态加密算法,并且结合改进后的同态加密算法和基于TF-IDF的向量空间模型技术,提出了一个改进后的基于向量空间模型的同态密文检索方案,以此尽可能的解决云端密文数据检索的时延和低效问题。

Based on the research and analysis of homomorphic encryption technology,aiming at the data security problems faced by cloud storage,an improved integer homomorphic encryption algorithm is proposed to solve the data security problems faced by cloud storage at present.Combined with the improved homomorphic encryption algorithm and the vector space model technology based on TF-IDF,an improved homomorphic ciphertext retrieval scheme based on vector space model is proposed in order to solve the problem of delay and inefficiency in cloud ciphertext data retrieval as far as possible.