Research Article
A Secure Storage and Transmission Method of Space Cloud Privacy Data
@INPROCEEDINGS{10.1007/978-3-030-69072-4_41, author={Yingzhao Shao and Xiaobo Li and Mingming Zhang}, title={A Secure Storage and Transmission Method of Space Cloud Privacy Data}, proceedings={Wireless and Satellite Systems. 11th EAI International Conference, WiSATS 2020, Nanjing, China, September 17-18, 2020, Proceedings, Part II}, proceedings_a={WISATS PART 2}, year={2021}, month={2}, keywords={Satellite internet Cloud data security User privacy data}, doi={10.1007/978-3-030-69072-4_41} }- Yingzhao Shao
Xiaobo Li
Mingming Zhang
Year: 2021
A Secure Storage and Transmission Method of Space Cloud Privacy Data
WISATS PART 2
Springer
DOI: 10.1007/978-3-030-69072-4_41
Abstract
With the rapid development of satellite Internet and space cloud, space cloud data security will become an important problem to be solved. In this paper, a method for secure storage and transmission of user privacy data in space cloud in the future is presented. By employing a large number of image data in the cloud, the Joint Photographic Experts Group (JPEG) image is decompressed into the quantized Discrete Cosine Transform (DCT) coefficients, and the mapping relationship between the DCT coefficients and the code stream is established. The maximum frequency of the non-zero coefficient is taken as the marked point, and the user privacy data is encrypted and embedded into each original code stream according to the Huffman code table. Finally, the final marked file with privacy data is obtained by merging the code streams of all code blocks. The marked file with embedded privacy data can be decompressed normally, and the decoded image can be displayed in a normal way. After the privacy data is extracted by legitimate users, the original carrier data can be recovered lossless. The experimental results show that this method ensures the secure storage and transmission of privacy data in the cloud without destroying the integrity and sharing of the original carrier data.
