医疗社交网络中隐私保护的基于属性环签密方案

发布时间：2018-06-21 07:01

本文选题：医疗社交网络 + 隐私保护　；参考：《西安电子科技大学》2014年硕士论文

【摘要】：随着无线网络和医疗传感器的发展,无线医疗系统的发展特别迅猛,在为病人提供各种医疗服务的同时,也为病人和医生都带来了极大的便利。随着物质文明的不断发展,精神文明也不甘落后。病人在接受各种身体上服务的同时,也需要来自与自己有着相似经历或症状的病人的心理安慰与疏导。尤其是当病人患有某种特别痛苦或者尴尬的疾病的时候,病人往往更需要心理上的支持与鼓励。医疗社交网络(HSNs)为医生和病人共享医疗信息提供了一个很有前景的应用平台。在HSNs中病人之间可以相互鼓励,交换意见并且共享医疗信息。由于医疗数据和病人身份的敏感性,所以我们要保证这些信息的机密性。在这个环境中,我们既要保证病人的医疗数据安全,又要保证病人的身份信息不被泄露。因此,我们针对HSNs中用户的隐私安全问题,提出了一个解决方案,并以此为重点展开讨论。本文主要研究内容如下所示：1.分析了医疗社交网络的研究背景以及国内外发展现状,详细介绍医疗社交网络的相关知识与主要技术问题,其中重点研究各种医疗社交网络的发展前景以及目前主要存在的一些隐私安全问题,并对这些隐私安全问题展开讨论。2.介绍基于身份加密的研究背景和意义以及其研究现状。而基于属性加密是将用户身份唯一标识符的概念泛化为表示用户身份的属性集合,这些属性集合由一个或多个属性组成。接着介绍了基于属性加密的相关技术理论和研究背景,以及基于属性环签名的匿名隐私保护技术。3.本文介绍一种隐私保护的基于属性环签密方案,基于对病人用户医疗数据和身份特征的研究及其特性分析,提出一种隐私保护的基于属性环签密方案。HSN用户被附上一些被归一化的属性。我们将一个用户隐藏在一个拥有某些跟他一样属性的用户环中。在这个环中,病人之间可以相互交流,不会泄露彼此的身份信息,环外的人不会得到任何的信息。而且,我们对信息同时进行了环签名和加密操作,即在保护用户医疗数据安全的同时,也保证了病人用户的身份隐私安全。并且,在一个步骤中同时进行签名和加密操作会减小计算开销,所以,我们的方案会节省资源。在文章的最后,我们通过形式化证明,证明了该方案的正确性和匿名性,并对方案进行了安全性证明,以及计算开销和通信开销作出相应分析。最终,我们证明了本方案的可行性,并对医疗社交网络未来的发展前景给出了相关分析。
[Abstract]:With the development of wireless networks and medical sensors, the wireless medical system is developing rapidly. It not only provides various medical services for patients, but also brings great convenience to patients and doctors. With the constant development of material civilization, spiritual civilization is not willing to lag behind. While receiving various physical services, patients also need psychological comfort and guidance from patients with similar experiences or symptoms. Especially when patients suffer from a particularly painful or embarrassing disease, they often need psychological support and encouragement. HSNs provides a promising platform for doctors and patients to share medical information. In HSNs, patients can encourage each other, exchange opinions, and share medical information. Because of the sensitivity of medical data and patient identity, we must ensure that this information is confidential. In this environment, we must not only ensure the patient's medical data security, but also ensure that the patient's identity information is not leaked. Therefore, we propose a solution to the privacy security of users in HSNs, and focus on it. The main contents of this paper are as follows: 1. This paper analyzes the research background of medical social network and its development at home and abroad, and introduces the related knowledge and main technical problems of medical social network in detail. It focuses on the development prospects of various medical social networks and some privacy security problems, and discusses these privacy security issues. This paper introduces the background and significance of ID-based encryption and its research status. Based on attribute encryption, the concept of unique identifier of user identity is generalized into a set of attributes representing user identity, which is composed of one or more attributes. Then it introduces the theory and research background of attribute encryption and the anonymous privacy protection technology based on attribute ring signature. In this paper, a privacy protection scheme based on attribute ring signcryption is introduced, which is based on the research and analysis of the medical data and identity of patients. This paper proposes a privacy protection based on attribute ring signcryption scheme. HSN users are attached with some normalized attributes. We hide a user in a user ring that has some of the same attributes as him. In this ring, patients can communicate with each other, do not reveal each other's identity information, people outside the ring will not get any information. Moreover, the information is signed and encrypted simultaneously, which not only protects the user's medical data security, but also ensures the patient's identity and privacy. Moreover, both signature and encryption in one step can reduce computational overhead, so our scheme will save resources. At the end of the paper, we prove the correctness and anonymity of the scheme through formal proof, and prove the security of the scheme, and analyze the computational overhead and communication overhead accordingly. Finally, we prove the feasibility of this scheme, and give a related analysis on the future development of medical social network.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN918.4

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