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A New Lightweight Stream Cipher Based on Chaos

1
Electronic Engineering College, Heilongjiang University, Harbin 150080, China
2
Electrical Engineering College, Suihua University, Suihua 152061, China
3
Computer and Information Engineering College, Heilongjiang University of Science and Technology, Harbin 150027, China
*
Author to whom correspondence should be addressed.
Symmetry 2019, 11(7), 853; https://doi.org/10.3390/sym11070853
Received: 27 May 2019 / Revised: 18 June 2019 / Accepted: 21 June 2019 / Published: 2 July 2019
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Abstract

A chaotic system and two Nonlinear Feadback Shift Registers (NFSRs) are used to generate a new stream cipher in this paper. This design can be used for efficient encryption in resource-constrained devices or environments. The chaotic system is quantified and integrated with two NFSRs based on the technology of Field Programmable Gate Array (FPGA). Many analyses are made from the angle of entropy in order to verify the cryptographic characteristics of the stream cipher, and National Institute of Standards and Technology (NIST) statistical test is completed to analyze the cipher. The test results show that the stream cipher here has good cryptographic characteristics. View Full-Text
Keywords: lightweight stream cipher; chaotic sequence; NFSR; entropy analysis; FPGA; NIST statistical test lightweight stream cipher; chaotic sequence; NFSR; entropy analysis; FPGA; NIST statistical test
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ding, L.; Liu, C.; Zhang, Y.; Ding, Q. A New Lightweight Stream Cipher Based on Chaos. Symmetry 2019, 11, 853.

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