An Efficient Key-Management Scheme for Hierarchical Access Control in E-Medicine System
An Efficient Key-Management Scheme for Hierarchical Access Control in E-Medicine System
复制标题
电子医疗系统分级访问控制的高效密钥管理方案
DOI：
10.1007/s10916-011-9700-7
复制
发表时间：
2012-08-01
影响因子：
5.3
通讯作者：
Chen, Kefei
中科院分区：
文献类型：
--
作者：
Wu, Shuhua;Chen, Kefei
在电子医疗系统中，分散在各个医疗机构之间的患者病历通过互联网共享是非常可取的。最迫切的密码学需求当然是一种有效的密钥管理方法来解决用户层次结构中的动态访问问题。本文提出了一种基于混合密码系统的用户层次动态访问问题的实用解决方案。与Nikooghadam等人最近提出的方案相比，时间复杂度和所需存储空间显著降低。此外，它提供了可证明的安全性，并且易于实现。因此，我们的方案更适合于电子医疗系统。
In e-medicine system, the sharing of patients' medical histories scattered among medical institutions through the Internet is highly desirable. The most immediate cryptographic need certainly is an efficient key management method to solve dynamic access problems in a user hierarchy. In this paper, we propose a practical solution for dynamic access problem in a user hierarchy based on hybrid cryptosystems. When compared with Nikooghadam et al.'s scheme proposed most recently, the time complexity and the required storage space is reduced significantly. Moreover, it provides provable security, and is easy to implement. Therefore, our scheme is more suitable for e-medicine system.