4.6 Article

Privacy-Enhanced and Verifiable Compressed Sensing Reconstruction for Medical Image Processing on the Cloud

期刊

IEEE ACCESS
卷 10, 期 -, 页码 18134-18145

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2022.3151398

关键词

Client-server system; computation outsourcing; compressed sensing reconstruction; privacy preservation

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This paper investigates cloud-aided compressed sensing reconstruction algorithms and proposes a new privacy-enhanced and verifiable CSR outsourcing algorithm. Compared to previous work, our design has advantages in security, privacy preservation, and computational efficiency.
The well-known compressed sensing reconstruction (CSR) uses the sparse characteristics of the signal to obtain discrete samples with the compression (i.e. measurement) algorithm, and then perfectly reconstructs the signal through the reconstruction algorithm. Benefiting from the storage savings, the CSR has been widely used in the field of large-scale image processing. However, the reconstruction process is computationally overloaded for resource-constrained clients. Therefore, designing a cloud-aided CSR algorithm becomes a hot topic. In this paper, we investigate the existing secure CSR algorithms within a cloud environment and propose a new privacy-enhanced and verifiable CSR outsourcing algorithm for online medical image processing services. Compared with previous work, our new design can efficiently achieve more extensive security. Precisely, (1) our algorithm realizes the privacy preservation of the original image, as well as the input/output information of the reconstruction process under the chosen-plaintext attack, (2) our design is based on a malicious cloud server model and can verify the correctness of the cloud returned result with a probability of approximating 1, and (3) our algorithm is highly efficient and can make the local client achieve decent computational savings. The main technique of our design is a combination of linear transformation, permutation and restricted random padding which is concise and high-efficiency. We analyze the above claims with rigorous theoretical arguments and comprehensive experimental analysis.

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