Scholarlink

<p>Thumbnail-preserving encryption (TPE) schemes have been continuously proposed in recent years. It is well known that the thumbnail block size affects the usability and privacy of ciphertext images, but there is no definitive method for determining block size. In this paper, firstly, we propose a new chaotic model called the Delayed Logarithmic Logistic Chaotic Model (DLLM). The simulation experiments show that this model has excellent chaotic properties and can generate complex pseudo-random sequences. Then, we design a DLLM-based TPE scheme. It makes each ciphertext image achieve a good balance of usability and privacy by expanding the range of block size and using a face comparison algorithm to determine the optimal block size.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

A chaotic thumbnail-preserving encryption scheme with optimal block size

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年9月24日

查看全文
  • Gengsheng Deng,
  • Weijie Xu,
  • Bingxue Jin,
  • Rongqing Lei,
  • Lingfeng Liu

摘要

Thumbnail-preserving encryption (TPE) schemes have been continuously proposed in recent years. It is well known that the thumbnail block size affects the usability and privacy of ciphertext images, but there is no definitive method for determining block size. In this paper, firstly, we propose a new chaotic model called the Delayed Logarithmic Logistic Chaotic Model (DLLM). The simulation experiments show that this model has excellent chaotic properties and can generate complex pseudo-random sequences. Then, we design a DLLM-based TPE scheme. It makes each ciphertext image achieve a good balance of usability and privacy by expanding the range of block size and using a face comparison algorithm to determine the optimal block size.