An efficient and forward-secure lattice-based searchable encryption scheme for the Big-data era

2021 ◽  
Vol 96 ◽  
pp. 107533
Author(s):  
SK Hafizul Islam ◽  
Nimish Mishra ◽  
Souvik Biswas ◽  
Bharat Keswani ◽  
Sherali Zeadally
2020 ◽  
Vol 109 ◽  
pp. 583-592 ◽  
Author(s):  
Shahzaib Tahir ◽  
Liutauras Steponkus ◽  
Sushmita Ruj ◽  
Muttukrishnan Rajarajan ◽  
Ali Sajjad

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1059 ◽  
Author(s):  
Shuai Li ◽  
Miao Li ◽  
Haitao Xu ◽  
Xianwei Zhou

The Internet of things (IoT) has become a significant part of our daily life. Composed of millions of intelligent devices, IoT can interconnect people with the physical world. With the development of IoT technology, the amount of data generated by sensors or devices is increasing dramatically. IoT-based big data has become a very active research area. One of the key issues in IoT-based big data is ensuring the utility of data while preserving privacy. In this paper, we deal with the protection of big data privacy in the data storage phase and propose a searchable encryption scheme satisfying personalized privacy needs. Our proposed scheme works for all file types including text, audio, image, video, etc., and meets different privacy needs of different individuals at the expense of high storage cost. We also show that our proposed scheme satisfies index indistinguishability and trapdoor indistinguishability.


Sensors ◽  
2019 ◽  
Vol 19 (10) ◽  
pp. 2327
Author(s):  

The Sensors Editorial Office wishes to report the following erratum to this paper [...]


Entropy ◽  
2021 ◽  
Vol 23 (5) ◽  
pp. 510
Author(s):  
Taiyong Li ◽  
Duzhong Zhang

Image security is a hot topic in the era of Internet and big data. Hyperchaotic image encryption, which can effectively prevent unauthorized users from accessing image content, has become more and more popular in the community of image security. In general, such approaches conduct encryption on pixel-level, bit-level, DNA-level data or their combinations, lacking diversity of processed data levels and limiting security. This paper proposes a novel hyperchaotic image encryption scheme via multiple bit permutation and diffusion, namely MBPD, to cope with this issue. Specifically, a four-dimensional hyperchaotic system with three positive Lyapunov exponents is firstly proposed. Second, a hyperchaotic sequence is generated from the proposed hyperchaotic system for consequent encryption operations. Third, multiple bit permutation and diffusion (permutation and/or diffusion can be conducted with 1–8 or more bits) determined by the hyperchaotic sequence is designed. Finally, the proposed MBPD is applied to image encryption. We conduct extensive experiments on a couple of public test images to validate the proposed MBPD. The results verify that the MBPD can effectively resist different types of attacks and has better performance than the compared popular encryption methods.


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