密码学报（中英文）2025，Vol.12Issue(1)：69-83,15.DOI:10.13868/j.cnki.jcr.000749
区块链上基于格的可监管隐私保护方案
Lattice-Based Regulatory Privacy Protection Scheme on Blockchain
摘要
Abstract
The public and transparent nature of data storage in blockchain ledgers poses a privacy breach risk on chain transaction data.Existing privacy protection schemes struggle to strike a balance between protecting users'privacy and regulating the behavior of malicious users.Moreover,the pri-vacy protection scheme based on traditional public key cryptography may have security risks in the quantum environment.In response to the above issues,this study proposes a lattice-based regulatory privacy protection scheme on blockchain,which achieves the protection of normal user's identity and transaction amount,as well as the supervision of malicious user's identity and transaction amount.Also the study designs the supervision key generation algorithm with the secret sharing scheme,avoid-ing excessive rights of a single regulator;utilizes one-time keys and one-time addresses to connect both parties in a transaction,while hiding the recipient's address;designs a user identity public key proof with the R-LWE problem and R-BGV encryption algorithm to ensure the anonymity and supervision of the users'identity;and designs proof of transaction amount to ensure that the transaction amount is balanced and supervisable.Through the analysis of the correctness,security and performance of the scheme,it is proven that the proposed scheme can effectively protect transaction data privacy while resisting quantum interference and achieving supervision of transaction user's identity and transaction amount.关键词
一次性地址/R-LWE困难问题/R-BGV加密/可监管隐私保护Key words
one-time address/ring-LWE problem/ring-BGV encryption/regulatory privacy protec-tion分类
计算机与自动化引用本文复制引用
曹博雅,高军涛,李雪莲..区块链上基于格的可监管隐私保护方案[J].密码学报（中英文）,2025,12(1):69-83,15.基金项目
陕西省重点研发计划(2021ZDLGY06-04) （2021ZDLGY06-04）
陕西高校青年创新团队 （）
西安电子科技大学交叉培育项目(21103240011)Key Research and Development Program of Shaanxi Province(2021ZDLGY06-04) （21103240011）
Youth Innovation Team of Shaanxi Universities （）
Interdisciplinary Cultivation Program of Xidian University(21103240011) （21103240011）
