.png){kind=icon}
返回
EHRChain: A Blockchain-Based EHR System Using Attribute-Based and Homomorphic Cryptosystem
.png){kind=icon}
PRE
AI
DOI：10.1109/TSC.2021.3078119.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
There is an urgent need to solve the problems of secure storage, reliable sharing, access control and privacy protection in medical industry. In this paper, we propose EHRChain, a blockchain-based EHR system using attribute-based and homomorphic cryptosystem to solve the above problems. First, we design a medical record storage scheme to realize secure high capacity medical data storage and reliable sharing based on blockchain technology and IPFS. Second, we propose an improved cryptographic primitive called SHDPCPC-CP-ABE. Our SHDPCPC-CP-ABE realizes the functions of semi-policy hiding and dynamic permission changing based on partial ciphertext simultaneously. Furthermore, our program achieves the neutrality of the subject of judicial identification in medical disputes and fine-grained access control of medical data. Third, our system applies an additive homomorphic cryptosystem, Paillier cryptosystem with optimized parameters on patients' privacy protection during the process of the medical insurance claim. After analysis and experiment, we have proved that the SHDPCPC-CP-ABE is indistinguishable under chosen plaintext attack and takes one third of the time of CP-ABE when changing access policy. Our system has higher performance than other EHR systems based on blockchain.
Keyword:
Medical diagnostic imaging
Blockchain
Encryption
Access control
Security
Privacy
Smart contracts
Access control
attribute-based cryptosystem
blockchain
EHR
homomorphic cryptosystem
security claim
security storage
IPFS
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
5.8
论文数:
2.2K
被引数:
6.5K
机构
引用论文
.png){kind=icon}
分享收藏Emergency Access Authorization for Personally Controlled Online Health Care Data个人控制的在线医疗保健数据的紧急访问授权
PREAI
分享收藏Ancile: Privacy-preserving framework for access control and interoperability of electronic health records using blockchain technologyAncile: 使用区块链技术的电子健康记录的访问控制和互操作性的隐私保护框架
OAAI
OAAI分享收藏Scalable and Secure Sharing of Personal Health Records in Cloud Computing Using Attribute-Based Encryption使用基于属性的加密在云计算中实现个人健康记录的可扩展和安全共享
OAAI
OAAI分享收藏
查看更多内容