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arXiv 1606.04705cs.CR
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TwinCloud:无需显式密钥管理的安全云共享

TwinCloud: Secure Cloud Sharing Without Explicit Key Management

Kemal Bicakci, Davut Deniz Yavuz, Sezin Gurkan

摘要:

随着云技术的出现,越来越多的易于使用的服务可以存储文件并与其他云用户共享。通过提供安全功能,云服务提供商试图鼓励用户在其服务器上存储个人文件或公司文档。然而,当服务器本身不受信任时,他们的服务器端加密解决方案并不令人满意。虽然有几种客户端解决方案可以为云共享提供安全性,但由于密钥管理中的可用性问题,它们并没有得到广泛使用。在本文中,我们提出了TwinCloud,这是一个创新的解决方案,其目标是为用户提供一个安全的系统,而不影响云共享的可用性。TwinCloud通过为复杂的密钥交换问题带来一种新颖的解决方案,并通过向用户隐藏所有加密和密钥分发操作来提供一种简单实用的方法来存储和共享文件,从而实现了这一目标。作为网关,TwinCloud使用两个或多个云提供商将加密密钥和加密文件存储在单独的云中,从而简化了安全共享,而无需信任任何一个云服务提供商,前提是它们不会相互勾结。我们将TwinCloud作为一个轻量级应用程序实现,并将其作为开源应用程序提供。我们的可用性研究结果显示了TwinCloud的安全共享解决方案的前景。

英文摘要:

With the advent of cloud technologies, there is a growing number of easy-to-use services to store files and share them with other cloud users. By providing security features, cloud service providers try to encourage users to store personal files or corporate documents on their servers. However, their server-side encryption solutions are not satisfactory when the server itself is not trusted. Although, there are several client-side solutions to provide security for cloud sharing, they are not used extensively because of usability issues in key management. In this paper, we propose TwinCloud which is an innovative solution with the goal of providing a secure system to users without compromising the usability of cloud sharing. TwinCloud achieves this by bringing a novel solution to the complex key exchange problem and by providing a simple and practical approach to store and share files by hiding all the cryptographic and key-distribution operations from users. Serving as a gateway, TwinCloud uses two or more cloud providers to store the encryption keys and encrypted files in separate clouds which ease the secure sharing without a need for trust to either of the cloud service providers with the assumption that they do not collude with each other. We implemented TwinCloud as a lightweight application and make it available as open-source. The results of our usability study show the prospect of the secure sharing solution of TwinCloud.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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