EEIRI: Efficient Encrypted Image Retrieval in IoT-Cloud

Abstract

One of the best means to safeguard the confidentiality, security, and privacy of an image within the IoT-Cloud is through encryption. However, looking through encrypted data is a difficult process. Several techniques for searching encrypted data have been devised, but certain security solutions may not be used in IoT-Cloud because such solutions are not lightweight. We propose a lightweight scheme that can perform a content-based search of encrypted images, namely EEIRI. In this scheme, the images are represented using local features. We develop and validate a secure scheme for measuring the Euclidean distance between two descriptor sets. To improve the search efficiency, we employ the k-means clustering technique to construct a searchable tree-based index. Our index construction process ensures the privacy of the stored data and search requests. When compared with more familiar techniques of searching images over plaintexts, EEIRI is considered to be more efficient, demonstrating a higher search cost of 7% and a decrease in search accuracy of 1.7%. Numerous empirical investigations are carried out in relation to real image collections so as to evidence our work.

A provably lightweight and secure DSSE scheme, with a constant storage cost for a smart device client

“…This is one of the objectives of the Searchable Symmetric Encryption (SSE) protocol, which is to offer client the ability to carry out those operations while providing the host server precise guarantees about the privacy of the client's data and queries. This work [9][10][11][12] is considered one of the most basic data operations and the research community introduced keywords to search in the ciphertext. Using the static database [13][14][15][16][17][18][19], the user uploads their documents to a semitrusted server for searching and then issues the server search tokens without disclosing sensitive data.…”