相关实验视频
Updated: Sep 18, 2025

07:44
Design and Synthesis of a Reconfigurable DNA Accordion Rack
Published on: August 15, 2018
7.2K
强大的图像加密使用2D超混沌地图和动态DNA-Zigzag编码
Haijun Zhang1,2, Xiaojiao Liu2, Kehan Chen2
1Chongqing Research Institute, Changchun University of Science and Technology, Chongqing 401135, China.
Entropy (Basel, Switzerland)
|June 26, 2025
概括
一个新的二维指数-对数-正弦混沌地图 (2D-ELSCM) 为安全的图像加密提供了强大的随机性. 拟议的方案使用DNA编码和Zigzag转换来提供强大的数据保护.
科学领域:
- 密码学和信息安全信息安全
- 应用数学 应用数学 应用数学
- 计算机科学 计算机科学
背景情况:
- 由于其复杂的动态,混乱地图对于安全加密至关重要.
- 现有的混乱地图往往缺乏足够的随机性或复杂性,以满足高级安全需求.
- 图像加密需要强大的方法来保护敏感的视觉数据.
研究的目的:
- 介绍一张新的二维超混沌地图,即二维指数-对数-正弦混沌地图 (2D-ELSCM).
- 开发和评估基于2D-ELSCM的安全图像加密方案.
- 对各种安全指标和潜在攻击来评估加密方案的性能.
主要方法:
- 使用指数函数,对数函数和正弦函数设计的2D-ELSCM.
- 使用最大利亚普诺夫指数 (LLE),变 (PE),样本 (SE),科尔摩戈罗夫 (KE) 和0-1测试来评估混乱属性.
- 实现了一种图像加密方案,其中包括改进的Knuth-Durstenfeld shuffle (IKDS),DNA编码和Zigzag转换.
- 使用纯文本和外部密钥的SHA-512哈希生成混乱地图初始条件.
主要成果:
- 2D-ELSCM证明了高混乱度,其中LLE=8.3175,PE=0.9998,SE=1.9826,KE=2.1117,0-1的测试结果=0.9970.
- 该地图成功通过了NIST的随机性测试,证实了它的复杂性.
- 加密方案实现了接近零的相关系数,加密图像的NPCR平均值为99.6090%,UACI为33.4707%.
- 该方案表现出强大的抗攻击能力和出色的加密质量.
结论:
- 2D-ELSCM是一个高度随机和复杂的混乱地图,适合加密应用.
- 拟议的图像加密方案提供了显著的安全改进和稳定性.
- 新的混乱地图和先进的加密技术的整合为安全的图像传输和存储提供了有前途的解决方案.
相关概念视频
Sequence Networks of Rotating Machines
150
A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
150
Maxam-Gilbert Sequencing
11.5K
In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
The...
Challenges of the Maxam-Gilbert Method
The...
11.5K
From DNA to Protein
19.2K
The flow of genetic information in cells from DNA to mRNA to protein is described by the central dogma, which states that genes specify the sequence of mRNAs, which in turn specify the sequence of amino acids making up all proteins. The decoding of one molecule to another is performed by specific proteins and RNAs. Because the information stored in DNA is so central to cellular function, it makes intuitive sense that the cell would make mRNA copies of this information for protein synthesis...
19.2K
Properties of the z-Transform II
190
The property of Accumulation in signal processing is derived by analyzing the accumulated sum of a discrete-time signal and using the time-shifting property to determine its z-transform. This principle reveals that the z-transform of the summed signal is related to the z-transform of the original signal by a multiplicative factor.
Moreover, the convolution property indicates that the convolution of two signals in the time domain corresponds to the product of their z-transforms in the frequency...
Moreover, the convolution property indicates that the convolution of two signals in the time domain corresponds to the product of their z-transforms in the frequency...
190
DNA as a Genetic Template
7.1K
7.1K
Two-Dimensional Microscopy in Microbiology
528
Two-dimensional (2D) microscopy encompasses a range of optical techniques that capture images within a single focal plane, offering detailed representations of microscopic structures. These techniques are essential in biological and medical research, enabling the visualization of cellular and subcellular structures with different levels of contrast and specificity.There are several major types of 2D microscopy, each with strengths and applications.Bright-Field MicroscopyBright-field microscopy...
528

