基于同态加密和区块链的成绩分析方案  

Score Analysis Based on Homomorphic Encryption and Blockchain

作　　者：凌宝红[1] 李彤 胡敏[2] 胡东辉[2] LING Baohong;LI Tong;HU Min;HU Donghui(School of Information Engineering,Anhui Broadcasting and Television College,Hefei 230011,China;School of Computer and Information,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]安徽广播影视职业技术学院信息工程学院,安徽合肥230011 [2]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《安徽建筑大学学报》2024年第2期40-48,共9页Journal of Anhui Jianzhu University

基　　金：安徽省科研编制计划资助项目(2022AH053074)。

摘　　要：传统的明文形式成绩分析存在学生个人数据泄露的风险,影响学生的学习积极性。论文提出了一种基于同态加密和区块链的成绩分析方案,并分析其中的恶意行为。方案将分数随机映射到高维向量,通过BGN同态加密算法加密向量,使得能够在密文域中直接实现排名和分析指标的精确计算,并且完全消除了学生和分数之间的直接映射,保证了成绩数据的安全性。此外,利用区块链存储分析过程中的数据,保证了数据的真实性。The plain text in traditional grade analysis carries the risk of student data leakage,consequently dampening students'enthusiasm for learning.This paper proposed a grade analysis scheme based on homomorphic encryption and blockchain,and analyzed the malicious behaviors in the analysis process.The scheme randomly mapped scores to high-dimensional vectors,and encrypted the vectors through BGN homomorphism encryption algorithm,enabling the accurate calculation of ranking and analysis metrics directly in the ciphertext domain and completely eliminating the direct mapping between students and scores,guaranteeing the security of the performance data.In addition,the scheme used the blockchain to store data from the analysis process to ensure data authenticity.

关 键 词：智慧教学 成绩分析 同态加密 区块链 隐私保护 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]