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<p>In this era of technology, we present an image encryption technique in this paper to secure digital images that possess confidential information during transmission through the internet. Our scheme’s main innovation is the combination of a rigorous approach for keystream and indexing sequence generation from one-dimensional chaotic maps and a special, diffusion process. In the diffusion process, sometimes we diffuse the current pixel utilizing the previously diffused pixels, but it is challenging to signify whether previous pixels are employed or not in the diffusion process; if previous pixels are employed, it is difficult to forecast which number of previous pixels are used in subsequent pixel diffusion, thereby obscuring the encryption pattern and significantly enhancing security. Furthermore, to effectively disrupt innate pixel correlations and patterns within plaintext images, we utilize a chaotic indexing sequence for confusion. We performed in-depth statistical and security analyses to evaluate the effectiveness of our image encryption approach. The compiled results confirm the strong resilience of our suggested image encryption against various attackers.</p>

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Image encryption scheme proposed using novel diffusion process with chaotic maps

  • 期刊论文

  • 发表日期：

    2026年2月25日

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  • Muhammad Akraam,
  • Tabasam Rashid,
  • Sohail Zafar

摘要

In this era of technology, we present an image encryption technique in this paper to secure digital images that possess confidential information during transmission through the internet. Our scheme’s main innovation is the combination of a rigorous approach for keystream and indexing sequence generation from one-dimensional chaotic maps and a special, diffusion process. In the diffusion process, sometimes we diffuse the current pixel utilizing the previously diffused pixels, but it is challenging to signify whether previous pixels are employed or not in the diffusion process; if previous pixels are employed, it is difficult to forecast which number of previous pixels are used in subsequent pixel diffusion, thereby obscuring the encryption pattern and significantly enhancing security. Furthermore, to effectively disrupt innate pixel correlations and patterns within plaintext images, we utilize a chaotic indexing sequence for confusion. We performed in-depth statistical and security analyses to evaluate the effectiveness of our image encryption approach. The compiled results confirm the strong resilience of our suggested image encryption against various attackers.