西安电子科技大学学报（自然科学版）2024，Vol.51Issue(2)：224-238,15.DOI:10.19665/j.issn1001-2400.20230410
一种改进条件广播代理重加密的数据共享方案
Improved data sharing scheme based on conditional broadcast proxy re-encryptionn
摘要
Abstract
Traditional conditional broadcast proxy re-encryption data sharing approaches over-rely on untrustworthy third-party proxy servers,which leads to issues of a low efficiency,data security and privacy leaks.To address the above problems,this paper proposes an information security protection scheme that combines conditional broadcast proxy re-encryption with blockchain consensus mechanisms.First,to solve the single point of failure and collusion attacks of individual proxy servers,this scheme uses blockchain nodes to take turns to act as proxy servers.At the same time,it selects high-credibility proxy servers to participate in re-encryption through the Delegated Proof of Stake(DPoS)consensus algorithm that integrates credibility mechanisms,greatly reducing the risks of the single point of failure and collusion attacks.Second,to address the high permission issue of proxy servers using re-encryption keys,this paper introduces the threshold cryptosystem concept and splits the re-encryption key into multiple fragments distributed across different proxy servers.In this way,any single proxy server is unable to decrypt data independently,thus effectively improving the security of the re-encryption process.Finally,through the analysis of the security,correctness and credibility of the scheme,it is demonstrated that this scheme can effectively solve security vulnerabilities in traditional schemes.Related simulation experimental results also prove that compared with existing data sharing schemes,this scheme has significant advantages in ensuring data security while having lower computational costs.关键词
条件广播代理重加密/门限密钥/区块链/共识机制Key words
conditional broadcast proxy re-encryption/threshold key/blockchain/consensus mechanism分类
信息技术与安全科学引用本文复制引用
翟社平,陆娴婧,霍媛媛,杨锐..一种改进条件广播代理重加密的数据共享方案[J].西安电子科技大学学报（自然科学版）,2024,51(2):224-238,15.基金项目
国家自然科学基金(61373116) （61373116）
工业和信息化部通信软科学项目(2018-R-26) （2018-R-26）
陕西省重点研发项目(2022GY-038) （2022GY-038）
陕西省教育厅科学研究项目(18JK0697) （18JK0697）
陕西省教育厅科学研究计划(18JK0697) （18JK0697）
陕西省社会科学基金(2016N008) （2016N008）
西安市社会科学规划基金(17X63) （17X63）
陕西省大学生创新创业训练计划(202211664016) （202211664016）
西安邮电大学研究生创新基金(CXJJYL2021050) （CXJJYL2021050）
