کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
432779 689067 2012 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Cooperative private searching in clouds
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
Cooperative private searching in clouds
چکیده انگلیسی

With the increasing popularity of cloud computing, there is increased motivation to outsource data services to the cloud to save money. An important problem in such an environment is to protect user privacy while querying data from the cloud. To address this problem, researchers have proposed several techniques. However, existing techniques incur heavy computational and bandwidth related costs, which will be unacceptable to users. In this paper, we propose a cooperative private searching (COPS) protocol that provides the same privacy protections as prior protocols, but with much lower overhead. Our protocol allows multiple users to combine their queries to reduce the querying cost while protecting their privacy. Extensive evaluations have been conducted on both analytical models and on a real cloud environment to examine the effectiveness of our protocol. Our simulation results show that the proposed protocol reduces computational costs by 80% and bandwidth cost by 37%, even when only five users query data.


► We designed a cooperative private searching architecture for cloud computing.
► We presented a protocol that allows multiple users to combine their queries.
► Our solution provided the same privacy protections as prior protocols.
► We evaluated our solution by analytical models and a real cloud environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Parallel and Distributed Computing - Volume 72, Issue 8, August 2012, Pages 1019–1031
نویسندگان
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