一个基于区块链的可验证的CP-ABE计划,用于医疗数据隐私保护
Leilei Zhao1,2, Guofang Dong3,4, Hao Yuan1,2
1School of Electrical and Information Technology, Yunnan Minzu University, Kunming, 650504, China.
Scientific reports
|July 27, 2025
概括
本研究介绍了使用区块链和先进加密的电子健康记录 (EHR) 的安全云共享方法. 它增强了数据完整性和访问控制,克服了传统系统中的单点故障.
科学领域:
- 计算机科学 计算机科学
- 信息安全 信息安全
- 医疗保健信息学 医疗保健信息学
背景情况:
- 基于云的电子健康记录 (EHR) 共享面临着重大安全挑战,包括单点故障和特权滥用.
- 现有的方法在运输和存储期间难以验证数据和访问政策的完整性.
研究的目的:
- 通过将区块链与可验证的密码文本政策属性基础加密 (CP-ABE) 集成到云中,提出一个新的安全EHR共享方案.
- 解决集中权限管理的局限性,增强数据完整性和访问政策验证.
主要方法:
- 在多个区块链节点中分散政策验证,以消除单点故障并提高稳定性.
- 使用 Vector Commitment 技术将访问策略绑定到加密文本,从而快速检测改和策略真实性.
- 整合基于属性的代理重新加密 (AB-PRE) 以实现动态和高效的访问权限调整.
主要成果:
- 拟议的方案有效地分散了政策验证,提高了系统的稳定性.
- 矢量承诺确保快速检测政策改,并保证政策的真实性.
- 根据患者的需求和状态,AB-PRE可提供动态的访问控制.
结论:
- 集成的区块链和CP-ABE方案提供了一种高效和有效的解决方案,用于基于云的安全EHR共享.
- 该方法增强了数据完整性,访问控制和系统抵御故障和攻击的弹性.
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