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Proposed image encryption method using PingPong256

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2020, 25(1), pp.71-77
  • DOI : 10.9708/jksci.2020.25.01.071
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science
  • Received : December 24, 2019
  • Accepted : January 6, 2020
  • Published : January 31, 2020

Ki-Hawn Kim 1 Lee, HoonJae 1 YOUNG SIL LEE 1

1동서대학교

Accredited

ABSTRACT

In this paper, we propose a method in which PingPong256 combines LFSR and variable clock to generate an irregular PRNG and use it for image encryption. PingPong256 is guaranteed an extended period based on the two LFSRs, and the variable clock is a structure that outputs the result of operating a predetermined clock in one operation by referring to the state of the different LFSR. A variable clock is characterized by the difficulty of predicting the output at any time because the choice increases with time. PingPong256 combines the advantages of LFSR and variable clock, the convenience of hardware and software implementation, and the benefits of sensitivity and irregular periods. Also, the statistical safety was verified using the NIST SP800-22, the safety of the proposed method, and the sensitivity of the image change was tested using NPCR and UACI.

Citation status

* References for papers published after 2023 are currently being built.

This paper was written with support from the National Research Foundation of Korea.