Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: MSPPIR: Multi-source privacy-preserving image retrieval in cloud
  computing   Content-Based Image Retrieval (CBIR) techniques have been widely researched
and in service with the help of cloud computing like Google Images. However,
the images always contain rich sensitive information. In this case, the privacy
protection become a big problem as the cloud always can't be fully trusted.
Many privacy-preserving image retrieval schemes have been proposed, in which
the image owner can upload the encrypted images to the cloud, and the owner
himself or the authorized user can execute the secure retrieval with the help
of cloud. Nevertheless, few existing researches notice the multi-source scene
which is more practical. In this paper, we analyze the difficulties in
Multi-Source Privacy-Preserving Image Retrieval (MSPPIR). Then we use the image
in JPEG-format as the example, to propose a scheme called JES-MSIR, namely a
novel JPEG image Encryption Scheme which is made for Multi-Source content-based
Image Retrieval. JES-MSIR can support the requirements of MSPPIR, including the
constant-rounds secure retrieval from multiple sources and the union of
multiple sources for better retrieval services. Experiment results and security
analysis on the proposed scheme show its efficiency, security and accuracy.

28
The categories of this paper are: alg-geom
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
11
The categories of this paper are: hep-lat
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
0
The categories of this paper are: hep-ph
27
The categories of this paper are: comp-gas