Secure Sharing Model Based on Block Chain in Medical Cloud (Short Paper)

doi:10.1007/978-3-030-30146-0_30

	Secure Sharing Model Based on Block Chain in Medical Cloud (Short Paper)
	Feng, Tao; Jiao, Ying; Fang, Junli
	2019
会议日期	August 19, 2019 - August 22, 2019
会议地点	London, United kingdom
关键词	Blockchain Digital storage Network security Distributed environments Medical cloud (MC) Medical institutions Privacy preserving Provable security Proxy re encryptions Random Oracle model Security analysis
卷号	292
DOI	10.1007/978-3-030-30146-0_30
页码	429-438
英文摘要	The cloud storage and sharing system are widely used in medical systems. The unique characteristics of cloud storage enable healthy data being efficiently delivered and retrieved. Nevertheless, traditional medical cloud system suffers two flaws. For one thing, centralized cloud servers are vulnerable to malicious attack and single point of failure. For another, these systems cannot offer a powerful capability to protect medical health data. Blockchain technology is considered to be one of vital technologies of Bitcoin. In this paper, we propose a security model which combines the cloud storage technology with blockchain technology. Our model adopts Delegate Proof of Stake (DPOS) consensus mechanism to ensure that all nodes have unified state in the network. Additionally, the CP-ABE scheme is introduced into the Proxy Re-encryption to store and share medical data which supports the keywords searching. Moreover, we rank medical institutions that different ranks have different duties. In our secure sharing models, there are no central nodes and it is a distributed environment. It not only can reduce the access overhead of the blockchain but also better resist the collusion attack. Furthermore, our security analysis indicates that the proposed scheme achieves provable security under the q-DBDHE assumption in the random oracle model. Then, the comparisons show that our model is more efficient and practical than previous ones. © 2019, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.
会议录	Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
会议录出版者	Springer Science and Business Media Deutschland GmbH
语种	英语
ISSN号	18678211
内容类型	会议论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/117944]
专题	计算机与通信学院
作者单位	School of Computer and Communication, Lanzhou University of Technology, Gansu; 730050, China
推荐引用方式 GB/T 7714	Feng, Tao,Jiao, Ying,Fang, Junli. Secure Sharing Model Based on Block Chain in Medical Cloud (Short Paper)[C]. 见:. London, United kingdom. August 19, 2019 - August 22, 2019.