Netinfo Security ›› 2021, Vol. 21 ›› Issue (4): 10-20.doi: 10.3969/j.issn.1671-1122.2021.04.002

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Secret Image Transmission and Tamper Recovery Based on Compressed Sensing for Fog Computing

ZHENG Hongying, LI Lin, XIAO Di()   

  1. College of Computer Science, Chongqing University, Chongqing 400044, China
  • Received:2021-01-22 Online:2021-04-10 Published:2021-05-14
  • Contact: XIAO Di E-mail:dixiao@cqu.edu.cn

Abstract:

In the three-layer data transmission framework of fog computing, the image data privacy leakage is still one of the most serious problems. In particular, most of the encryption methods are not suitable for the situation of limited physical terminal resources. Therefore, for these scenarios, we need to design an appropriate method to protect data privacy. Compressed sensing(CS) is promising to solve this problem because of its lightweight and confidentiality. In this paper, a three-layer transmission scheme of image data based on CS encryption algorithm is proposed: it can not only realize the secure transmission of data, but also realize the tamper location and recovery by combining with Reed-solomon code(RS) to deal with tamper attacks. In the aspect of confidentiality, the block CS is used to achieve lightweight encryption on the terminal, then the measured value is locally normalized in the fog server due to that the measured values may leak the plaintext energy, and then the generated energy values is encrypted with high intensity so that the transmission process can achieve perfect confidentiality. In the aspect of integrity, the robustness of CS and the redundancy of RS coding are used to achieve the location and recovery of tampered data. Simulation results and analyses verify the performance of the proposed scheme.

Key words: fog computing, compressed sensing, image encryption, tamper recovery

CLC Number: