Compression-friendly image encryption algorithm based on order relation

Ganzorig Gankhuyag, Yoonsik Choe

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


In this paper, we introduce an image encryption algorithm that can be used in combination with compression algorithms. Existing encryption algorithms focus on either encryption strength or speed without compression, whereas the proposed algorithm improves compression efficiency while ensuring security. Our encryption algorithm decomposes images into pixel values and pixel intensity subsets, and computes the order of permutations. An encrypted image becomes unpredictable after permutation. Order permutation reduces the discontinuity between signals in an image, increasing compression efficiency. The experimental results show that the security strength of the proposed algorithm is similar to that of existing algorithms. Additionally, we tested the algorithm on the JPEG and the JPEG2000 with variable compression ratios. Compared to existing methods applied without encryption, the proposed algorithm significantly increases PSNR and SSIM values.

Original languageEnglish
Pages (from-to)1013-1023
Number of pages11
JournalJournal of Internet Technology
Issue number4
Publication statusPublished - 2020

Bibliographical note

Publisher Copyright:
© 2020 Taiwan Academic Network Management Committee. All rights reserved.

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications


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