Cover
Vol. 20 No. 2 (2024)

Published: December 31, 2024

Pages: 1-21

Original Article

A Secure Image Cryptographic Algorithm Based on Triple Incorporated Ciphering Stages

Sura F. Yousif 1 Abbas Salman Hameed Dheyaa T. Al-Zuhairi
1Collage of Engineering, University of Diyala, Diyala, Iraq
History
  • Received: June 1, 2023
  • Revised: August 10, 2023
  • Accepted: September 13, 2023
  • Available Online: March 26, 2024
DOI

https://doi.org/10.37917/ijeee.20.2.1

Abstract

Lately, image encryption has stand out as a highly urgent demand to provide high security for digital images against use and unauthorized distribution. A lot of existing researches use chaotic systems, symmetric or asymmetric schemes for image encryption, but cryptosystem based on one encryption technique only, faces many challenges like weak security and low complexity. Therefore, incorporating two or more different ciphering methods yields a secure and efficient algorithm to protect image information. In this work, a new image cryptosystem is suggested by joining zigzag scan technique, RSA algorithm and chaotic systems. These three security factors introduce Triple Incorporated Ciphering stages system (TIC). Initially, the plaintext image is divided into 8 × 8 non-overlapping blocks, then the odd blocks are isolated from the even blocks. After that, a new modified zigzag scan in two different directions is adopted for shuffling pixels in the odd and even blocks. This operation effectively enhances the shuffling degree. Next, the RSA algorithm is utilized after combining the scrambled blocks in one matrix. Finally, chaotic systems are implemented on the resultant encrypted matrix to complete the ciphering process. The chaos is implemented in two steps; confusion and diffusion. Duffing map is exploited in the confusion stage, whereas L¨u system is adopted on the shuffled matrix in the diffusion stage. The simulation results show the superiority of TIC in both security and attacks robustness compared to other cryptographic algorithms. Therefore, TIC can be exploited in real-time communication systems for secure image transmission.

Keywords

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