Scholarlink

<p>JPEG is the most widely used standard for multimedia storage and transmission, making its security critical in domains such as forensics and journalism. Conventional encryption algorithms (e.g., AES) are not well suited for JPEG images, as they disrupt compression structure and format compliance. This paper proposes a lightweight JPEG-compatible encryption framework that integrates encryption within the compression pipeline. The method performs reversible substitution of DC coefficients using an integer Haar transform in the DC difference domain, followed by chaotic permutation using the Jia hyper-chaotic system. AC coefficients are permuted across blocks using a logistic-map-based sequence, preserving coefficient magnitudes and preventing overflow or underflow.</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 Lightweight Haar Transform-Based JPEG Encryption Framework for Secure and Efficient Multimedia Transmission

  • 期刊论文

  • 发表日期：

    2026年5月2日

查看全文
  • Meena Lakshmi,
  • Vasily Sachnev,
  • Amritha P P,
  • Lakshmy K V

摘要

JPEG is the most widely used standard for multimedia storage and transmission, making its security critical in domains such as forensics and journalism. Conventional encryption algorithms (e.g., AES) are not well suited for JPEG images, as they disrupt compression structure and format compliance. This paper proposes a lightweight JPEG-compatible encryption framework that integrates encryption within the compression pipeline. The method performs reversible substitution of DC coefficients using an integer Haar transform in the DC difference domain, followed by chaotic permutation using the Jia hyper-chaotic system. AC coefficients are permuted across blocks using a logistic-map-based sequence, preserving coefficient magnitudes and preventing overflow or underflow.