Lee Tian-Fu
Department of Medical Informatics, Tzu Chi University, Hualien 970, Taiwan, ROC.
Comput Methods Programs Biomed. 2014 Dec;117(3):464-72. doi: 10.1016/j.cmpb.2014.09.006. Epub 2014 Oct 2.
Telecare medicine information systems provide a communicating platform for accessing remote medical resources through public networks, and help health care workers and medical personnel to rapidly making correct clinical decisions and treatments. An authentication scheme for data exchange in telecare medicine information systems enables legal users in hospitals and medical institutes to establish a secure channel and exchange electronic medical records or electronic health records securely and efficiently. This investigation develops an efficient and secure verified-based three-party authentication scheme by using extended chaotic maps for data exchange in telecare medicine information systems. The proposed scheme does not require server's public keys and avoids time-consuming modular exponential computations and scalar multiplications on elliptic curve used in previous related approaches. Additionally, the proposed scheme is proven secure in the random oracle model, and realizes the lower bounds of messages and rounds in communications. Compared to related verified-based approaches, the proposed scheme not only possesses higher security, but also has lower computational cost and fewer transmissions.
远程医疗信息系统提供了一个通过公共网络访问远程医疗资源的通信平台，并帮助医护人员迅速做出正确的临床决策和治疗。远程医疗信息系统中的数据交换认证方案使医院和医疗机构中的合法用户能够建立一个安全通道，并安全高效地交换电子病历或电子健康记录。本研究通过使用扩展混沌映射为远程医疗信息系统中的数据交换开发了一种高效且安全的基于验证的三方认证方案。所提出的方案不需要服务器的公钥，避免了先前相关方法中在椭圆曲线上进行耗时的模指数运算和标量乘法。此外，所提出的方案在随机预言模型中被证明是安全的，并实现了通信中消息和轮数的下限。与相关的基于验证的方法相比，所提出的方案不仅具有更高的安全性，而且具有更低的计算成本和更少的传输次数。
