基于同态加密的营业厅自助终端数据防泄露系统  

Data leakage prevention system of self⁃service terminal in business hall based on homomorphic encryption

作　　者：李连浩 刘岩 周辛南 魏子睿 赵卜 LI Lianhao;LIU Yan;ZHOU Xinnan;WEI Zirui;ZHAO Bo(Chengde Power Supply Company,State Grid Jibei Electric Power Company,Chengde 067000,China;State Grid Jibei Electric Power Co.,Ltd.,Beijing 100054,China;State Grid Jibei Marketing Service Center(Metrdlogy Center and Power Load Management Center),Beijing 100010,China)

机构地区：[1]国网冀北电力有限公司承德供电公司,河北承德067000 [2]国网冀北电力有限公司,北京100054 [3]国网冀北营销服务中心(计量中心、电力负荷管理中心),北京100010

出　　处：《电子设计工程》2024年第20期187-190,195,共5页Electronic Design Engineering

基　　金：国网承德供电公司2022年营业管理项目(620106220005)。

摘　　要：为了解决传输数据量相对较多时,电力营业厅自助终端传输数据加密能力有限造成信息泄露的问题,设计基于同态加密的营业厅自助终端数据防泄露系统。构建自助终端控制台的数据层、输入层、执行层、输出层结构,完成防泄露系统的多层结构和硬件设计。确定同态密文的扩展形式,并以此为基础求解同态加密函数表达式,制定营业厅自助终端数据的同态加密方案;确定具体的数据防泄露处理流程,联合相关硬件应用结构,完成基于同态加密的营业厅自助终端数据防泄露系统的设计。实验结果表明,该系统的应用可以实现对传输数据的准确加密,加密后数据对象的编码长度与标准编码长度差值不超过0.5 bit,能够解决电力营业厅自助终端加密能力有限导致信息泄露的问题。In order to solve the problem of information leakage caused by the limited transmission data encryption capacity of the self-service terminal in the power business hall when the amount of transmission data is relatively large,a data leakage prevention system for the self-service terminal in the business hall based on Homomorphic encryption is designed.Construct the data layer,input layer,execution layer,and output layer structure of the self-service terminal console,and complete the multi-layer structure and hardware design of the anti leakage system.Determine the extended form of homomorphic ciphertext,and based on this,solve the homomorphic encryption function expression,and formulate the Homomorphic encryption scheme for the self-service terminal data of the business hall;Determine the specific data leakage prevention processing flow,and complete the design of the data leakage prevention system of the self-service terminal of the business hall based on Homomorphic encryption in combination with the relevant hardware application structure.The experimental results show that the application of this system can achieve accurate encryption of transmitted data,and the difference between the encoded length of the encrypted data object and the standard encoding length does not exceed 0.5 bit.It can solve the problem of information leakage caused by the limited encryption ability of the self-service terminal in the power business hall.

关 键 词：同态加密 电力营业厅 自助终端 数据防泄露 密文扩展 泄露风险 

分 类 号：TN399[电子电信—物理电子学]