论文标题
基于属性的多符号和EHR管理的加密：基于区块链的解决方案
Attribute-based Multi-Signature and Encryption for EHR Management: A Blockchain-based Solution
论文作者
论文摘要
全球电子健康记录（EHR）市场正在急剧增长，2018年已经达到315亿美元。为了保护EHR数据和患者隐私的安全性，细粒度的信息访问和共享机制对于EHR管理至关重要。本文提出了区块链和边缘节点的混合体系结构，以促进EHR管理。在此体系结构中，我们利用基于属性的多签名（ABMS）方案来验证用户的签名，而无需揭示敏感信息和基于多权威性属性的加密（ABE）方案来加密存储在边缘节点上的EHR数据。我们在HyperLeDger Fabric平台上开发了区块链模块和HyperLeDger Ursa库上的ABMS模块。我们在不同的设置下测量ABMS方案的签名和验证时间，并尝试以区块链中的交易记录的身份验证事件和访问活动。
The global Electronic Health Record (EHR) market is growing dramatically and has already hit $31.5 billion in 2018. To safeguard the security of EHR data and privacy of patients, fine-grained information access and sharing mechanisms are essential for EHR management. This paper proposes a hybrid architecture of blockchain and edge nodes to facilitate EHR management. In this architecture, we utilize attribute-based multi-signature (ABMS) scheme to authenticate user's signatures without revealing the sensitive information and multi-authority attribute-based encryption (ABE) scheme to encrypt EHR data which is stored on the edge node. We develop the blockchain module on Hyperledger Fabric platform and the ABMS module on Hyperledger Ursa library. We measure the signing and verifying time of the ABMS scheme under different settings, and experiment with the authentication events and access activities which are logged as transactions in blockchain.
