摘要
针对当前数据库隐私数据泄密事件频发的现状,设计基于RSA的代理重加密授权访问方法,并在其基础上提出基于对称加密系统的优化方法。通过对加密后的数据授权生成镜像层和对用户权限划分,构建权限控制层,实现无副本数据访问共享,从而防止数据泄密。实验结果表明,与基于公钥系统的方法相比,该方法具有更好的重加密和数据访问效率,提高了PostgreSQL数据库的访问性能。
In view of the current status of frequent database privacy data leakage incidents,the RSA-based proxy reencryption authorization access method is designed,and on the basis of it,an optimization method based on a symmetric encryption system is proposed. Construct a permission control layer by encrypting the encrypted data to create a mirroring layer and dividing the user＇s authority. It can enable data access sharing without copy to prevent data leaks. Experimental results show that compared with the method based on public key system,this method has higher re-encryption and data access efficiency,and improves the access performance of PostgreSQL database.
作者
刘红超
缪燕
郝悍勇
杨利兵
吴璠
LIU Hongchao1, MIAO Yan1, HAO Hanyong2, YANG Libing1, WU Fan3(1. Beijing Xuji Electric Co. ,Ltd. ,Beijing 100085, China; 2.State Grid Corporation of China,Beijing 100085 ,China; 3. School of Computer, Wuhan University, Wuhan 430074, Chin)
出处
《计算机工程》
CAS
CSCD
北大核心
2018年第8期192-198,共7页
Computer Engineering
基金
北京市科技计划课题(D171100005817001)
