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相关概念视频

Three-Dimensional Force System01:30

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In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
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A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
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In any LTI (Linear Time-Invariant) system, the convolution of two signals is denoted using a convolution operator, assuming all initial conditions are zero. The convolution integral can be divided into two parts: the zero-input or natural response and the zero-state or forced response, with t0 indicating the initial time.
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The important convolution properties include width, area, differentiation, and integration properties.
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Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
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增强AES图像加密的三维超混沌系统,以提高安全性和效率.

Mingyi Huo1, Yanpei Zheng2, Jun Huang3

  • 1College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai, China.

PloS one
|July 18, 2025
PubMed
概括
此摘要是机器生成的。

本研究介绍了一种使用简化的高级加密标准 (AES) 与三维超混沌系统 (TDHCS) 结合的新型图像加密方法. 这种新方法显著提高了加密速度,并提高了对攻击的安全性.

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科学领域:

  • 计算机科学 计算机科学
  • 密码学 密码学 密码学 密码学
  • 信息安全 信息安全

背景情况:

  • 图像数据安全对于数字时代的国家安全和个人隐私至关重要.
  • 标准高级加密标准 (AES) 面临图像数据复杂性的挑战,影响效率和安全性.
  • 有效且具有成本效益的图像加密是安全数据传输的迫切需要.

研究的目的:

  • 开发一个简化的AES图像加密框架,使用一种新的三维超混沌系统 (TDHCS).
  • 与传统的AES和现有的混乱方法相比,提高图像加密的效率和安全性.
  • 为数字图像隐私保护提供强大的解决方案,防止各种加密攻击.

主要方法:

  • 整合了一种新的三维超混沌系统 (TDHCS),用于生成随机混沌序列.
  • 简化AES加密过程使用TDHCS生成的序列,包括动态S盒生成和随机操作方案.
  • 将加密回合减少到一个,在循环键加法和行移动中取代固定序列.

主要成果:

  • 实现了加密时间的显著减少,256x256灰度图像在2.2369秒内被加密 (87.08%比传统AES更快).
  • 在NPCR (0.0031%),UACI (0.0046%) 和BACI (0.0288%) 中显示出强烈的对差异性攻击的抗性,偏差最小.
  • 成功提高了加密效率和安全性,优于其他基于AES的混乱加密算法.

结论:

  • 基于TDHCS的拟议简化的AES图像加密框架在速度和安全方面显著改善.
  • 该算法对各种加密攻击的稳定性使其成为数字图像隐私的潜在首选解决方案.
  • 动态S-box和随机操作方案有助于提高图像加密的安全性和效率.