4.6 Article

A Symmetric Plaintext-Related Color Image Encryption System Based on Bit Permutation

期刊

ENTROPY
卷 20, 期 4, 页码 -

出版社

MDPI
DOI: 10.3390/e20040282

关键词

bit-level permutation; image encryption; PRRABPM; plaintext related

资金

  1. National Natural Science Foundation of China [61201392]
  2. Natural Science Foundation of Guangdong Province, China [2015A030313497]
  3. Science and Technology Planning Project of Guangdong Province, China [2017B090909004]

向作者/读者索取更多资源

Recently, a variety of chaos-based image encryption algorithms adopting the traditional permutation-diffusion structure have been suggested. Most of these algorithms cannot resist the powerful chosen-plaintext attack and chosen-ciphertext attack efficiently for less sensitivity to plain-image. This paper presents a symmetric color image encryption system based on plaintext-related random access bit-permutation mechanism (PRRABPM). In the proposed scheme, a new random access bit-permutation mechanism is used to shuffle 3D bit matrix transformed from an original color image, making the RGB components of the color image interact with each other. Furthermore, the key streams used in random access bit-permutation mechanism operation are extremely dependent on plain image in an ingenious way. Therefore, the encryption system is sensitive to tiny differences in key and original images, which means that it can efficiently resist chosen-plaintext attack and chosen-ciphertext attack. In the diffusion stage, the previous encrypted pixel is used to encrypt the current pixel. The simulation results show that even though the permutation-diffusion operation in our encryption scheme is performed only one time, the proposed algorithm has favorable security performance. Considering real-time applications, the encryption speed can be further improved.

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