Wu Yilun, Lu Xicheng, Su Jinshu, Chen Peixin
College of Computer, National University of Defense Technology, Changsha, Hunan, People's Republic of China.
National Key Laboratory for Parallel and Distributed Processing, National University of Defense Technology, Changsha, Hunan, People's Republic of China.
J Med Syst. 2016 Dec;40(12):258. doi: 10.1007/s10916-016-0609-z. Epub 2016 Oct 8.
Preserving the privacy of electronic medical records (EMRs) is extremely important especially when medical systems adopt cloud services to store patients' electronic medical records. Considering both the privacy and the utilization of EMRs, some medical systems apply searchable encryption to encrypt EMRs and enable authorized users to search over these encrypted records. Since individuals would like to share their EMRs with multiple persons, how to design an efficient searchable encryption for sharable EMRs is still a very challenge work. In this paper, we propose a cost-efficient secure channel free searchable encryption (SCF-PEKS) scheme for sharable EMRs. Comparing with existing SCF-PEKS solutions, our scheme reduces the storage overhead and achieves better computation performance. Moreover, our scheme can guard against keyword guessing attack, which is neglected by most of the existing schemes. Finally, we implement both our scheme and a latest medical-based scheme to evaluate the performance. The evaluation results show that our scheme performs much better performance than the latest one for sharable EMRs.
保护电子病历（EMR）的隐私极其重要，尤其是当医疗系统采用云服务来存储患者的电子病历时。考虑到电子病历的隐私性和利用率，一些医疗系统应用可搜索加密技术来加密电子病历，并使授权用户能够对这些加密记录进行搜索。由于个人希望与多个人共享他们的电子病历，如何为可共享电子病历设计一种高效的可搜索加密技术仍然是一项极具挑战性的工作。在本文中，我们提出了一种针对可共享电子病历的低成本无安全通道可搜索加密（SCF-PEKS）方案。与现有的SCF-PEKS解决方案相比，我们的方案减少了存储开销并实现了更好的计算性能。此外，我们的方案能够防范关键字猜测攻击，而这一点被大多数现有方案所忽视。最后，我们实现了我们的方案和一个最新的基于医疗的方案来评估性能。评估结果表明，对于可共享电子病历，我们的方案比最新方案表现出更好的性能。
