Authors: Parmod Kalia; Divya Bansal; Sanjeev Sofat
Addresses: Department of Computer Science and Engineering, Punjab Engineering College, Chandigarh, India ' Department of Computer Science and Engineering, Punjab Engineering College, Chandigarh, India ' Department of Computer Science and Engineering, Punjab Engineering College, Chandigarh, India
Abstract: In the present digital world, usage of the internet has increased many folds as users have become dependent on the cloud-based applications. The disclosure of personal information on such platforms becomes a prospective threat for an attack. Researchers have used randomised data distortion technique with addition of random noise to conceal the sensitive data from an unauthorised adversary. This perturbation technique has relevance for the numerical datasets only. In this paper, we propose a hybrid model of two phases encoding with additive random noise value for ensuring non-disclosure of private and sensitive information and maintaining an effective balance between data privacy and data utility. The proposed technique has been tested on different data sizes of the real estate industry in terms of efficiency and effectiveness in preserving privacy and data utility. The proposed algorithm has been evaluated in terms of privacy level and information loss. It has proved effective in comparison with other privacy-preserving techniques such as perturbation and encryption in terms of space complexity and efficiency.
Keywords: cloud computing; data mining; sensitive attribute; quasi identifier; perturbation; encoding; computational complexity.
International Journal of Information and Computer Security, 2021 Vol.15 No.4, pp.400 - 410
Received: 02 May 2020
Accepted: 23 Oct 2020
Published online: 28 Jul 2021 *