基于混沌理论的图像加密[外文文献翻译].docx
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基于混沌理论的图像加密[外文文献翻译],包括英文原文和中文译文英文文献原文image encryption using chaos theoryminal govind avasare electronics and telecommunication d.j.sanghvi college of engineering...
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基于混沌理论的图像加密[外文文献翻译]
包括英文原文和中文译文
包括英文原文和中文译文
英文文献原文
Image Encryption using Chaos Theory
Minal Govind Avasare Electronics and Telecommunication D.J.Sanghvi College of Engineering
Mumbai, India
minalavsare@yahoo.co.in
Vishakha Vivek Kelkar Electronics and Telecommunication D.J.Sanghvi College of Engineering
Mumbai, India
kelkar.vishakha@gmail.com
Abstract— In open network, it is important to keep sensitive information secure from becoming vulnerable to unauthorized access. Encryption is used to ensure high security for Images. Chaos has been widely used for image encryption for its different features. There are many chaos based encryption techniques. Most of the proposed discrete chaotic cryptographic approaches are based on stream or block cipher schemes. If these two schemes are combined the security level is improved. Novel image encryption is proposed based on combination of pixel shuffling .Chaos is used for expand diffusion & confusion in image .Chaotic maps gives advantages of large key space and high level security. We survey exiting work which uses different techniques for image encryption and analyse them with respect to various parameters. To eva luate security & performance, key space analysis, correlation coefficient, histogram, information entropy, NPCR, UACI etc. will be studied.
Keywords—encryption, chaos, permutation, diffusion
I. INTRODUCTION
In last few decades, digital information sharing has become more common with the fast development of Internet. However, in open networks, it is very much important to keep sensitive information such as military and medical images secure from becoming vulnerable to unauthorized access.
With the proliferation of the Internet and maturation of the digital signal processing technology, applications of digital imaging are preva lent and are still continuously and rapidly increasing today. Yet the main obstacle in the widespread deployment of digital image services has been。。。
英文文献翻译
基于混沌理论的图像加密
摘要
在开放的网络中,确保敏感信息的安全,防止变得容易受到未经授权的访问是重要的。加密技术是用来确保图像的高安全性。混沌因为其不同的特点已广泛用于图像加密中。在许多基于混沌的加密技术中,大多数提出的离散混沌加密方法是基于流或分组密码方案。如果这两个方案结合了安全水平的提高,那么新的图像加密可以说是基于像素的置乱了。混沌被用于扩大图像扩散度和混乱度,且混沌映射展现出了在密钥空间大和安全性高的新优势。我们调查了现有阶段使用不同的图像加密技术的工作,分析了这些加密技术各个方面的参数。为了评估安全性和性能,密钥空间分析,相关系数,直方图,信息熵,nPCR,UACI等都进行过深入的研究。
关键字:加密技术;混沌;置乱;扩散
一 引言
在过去的几十年中,数字信息共享已经随着互联网的快速发展而变得更常见。然而,在开放的网络中,确保敏感信息如军事、医学图像的安全,防止容易受到未经授权的访问是很重要的。
随着互联网技术的快速发展和数字信号处理技术的成熟,现在,数字成像应用普遍存在,且仍在不断地迅速地增长。然而,在数字图像服务的广泛部署的主要障碍是实施安全和确保敏感数据特别是多媒体数据的授权访问。在这方面,一个直接的解决方案是使用那些具有LED的著名数论基础的加密算法来掩盖图像数据流,比如数据加密标准(DES),国际数据加密算法(IDEA),以及由Rivest,夏米尔和Adleman开发的算法(RSA)[ 1 ] [ 2 ]。然而,这些加密算法的出现对于图像应用并不是很理想,这是因为图像数据量大、冗余度高的一些内在特征,使得传统加密技术会出现麻烦。
此外,上诉的加密算法需要额外的操作来压缩图像数据,从而要求计算时间长和高的计算能力。在实时通信中,由于其低的加密和解密速度,他们可以引入显着的延迟。与大多数现有的加密标准以其为目标的文本加密手段相比,图像加密(或更一般的,多媒体加密)有其自身的特点和特殊的功能,具有许多独特的规格。
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