Towards Differential Query Service in Cost-Efficient Clouds
Pyata Hemalatha, D. Mahammad Rafi, Golla Chakrapani · Journal of Emerging Technologies and Innovative Research · 2021
Cloud computing as an emerging technology trend is expected to reshape the advances in information technology. In a cost efficient cloud environment, a user can tolerate a certain degree of delay while retrieving information from the cloud to reduce costs. In this paper, we address two fundamental issues in such an environment: privacy and efficiency. We first review a private keyword-based file retrieval scheme that was originally proposed by Ostrovsky. Their scheme allows a user to retrieve files of interest from an untrusted server without leaking any information.