云计算环境下多源信息资源全同态加密仿真  

Simulation of Multi-source Information Resource Fully Homomorphic Encryption under Cloud Computing Environment

作　　者：陈滢生[1] 汪林林[2] CHEN Ying-sheng;WANG Lin-lin(School of Computer Engineering,Chongqing college of Humanities,Science ＆ Technology,Chongqing 401524,China;School of Software,Chongqing University of Posts and Telecommunications,Chongqing 401524,China)

机构地区：[1]重庆人文科技学院计算机工程学院,重庆401524 [2]重庆邮电大学软件学院,重庆401524

出　　处：《计算机仿真》2018年第7期117-120,共4页Computer Simulation

基　　金：国家自然科学基金(61303038);重庆市教委科技处项目(KJ1716367)

摘　　要：针对云计算环境下多源信息资源的加密,传统的加密方法采用异或算法完成密钥对称解密,增加数据安全性,存在公钥尺度过大和密文长度较长的缺点,导致加密运行效率低和存储空间大的问题。提出一种具有较短公钥的云计算环境下多源信息资源全同态加密方法。添加一组同余数对感知资源同态加密,在加性融合后的密文数据中提取真实资源,采用中国剩余定理验证资源完整性。将新安全参数融合于完整性验证参数经线性转换,减少公钥元素数量,实现公钥尺寸的改进。实验结果表明,所提方法具有较高的运行效率和较小的密钥及密文长度,能够满足实际云环境下的应用需求。For the encryption of multi-source information in cloud computing environment, the traditional encryp- tion method adopts the exclusive-or algorithm to complete the symmetric deeryption and increase data security, which causes low eneryption efl＇ieieney. This paper proposes a method of fully homomorphie encryption of multi-source in- formation resource with short public key in cloud computing environment. Firstly, a set of congruence numbers was added for the homomorphie encryption of perceived resources, and then the real resource was extracted from cipher text after the additive fusion. Moreover, the Chinese remainder theorem was used to verify resource integrity. In addi- tion, new security parameters were fused into the integrity verification parameters through the linear transformation to reduce the number of public key elements. Thus, the improvement of public key size was achieved. Simulation re- suits prove that the proposed method has high operating efficiency and small key and cryptograph length, which can meet the application requirement in actual cloud environment.

关 键 词：云计算环境 多源信息资源 全同态加密 

分 类 号：TP393.08[自动化与计算机技术—计算机应用技术]