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光学精密工程 2008年第9期16卷 1781-1786页

作者：张晓岩王超孙志人于杨南京师范大学数学与计算机学院江苏南京210097 南开大学软件学院天津300071 南京师范大学电气与自动化工程学院江苏南京210097

结合Lafe给出的基于细胞自动机变换的压缩技巧,提出了一个新的基于有序细胞自动机(CA)的图像加密方案。新的方案既利用了基于细胞自动机的变换对二维图像具有良好压缩效果的特点,又用有序细胞自动机的加密技术弥补了Lafe方案中加密效果... 详细信息

结合Lafe给出的基于细胞自动机变换的压缩技巧,提出了一个新的基于有序细胞自动机(CA)的图像加密方案。新的方案既利用了基于细胞自动机的变换对二维图像具有良好压缩效果的特点,又用有序细胞自动机的加密技术弥补了Lafe方案中加密效果不理想的缺点,使得密钥空间至少达到2H×2512×233 554 432。模拟结果表明,该方案具有良好的细胞自动机雪崩效应的特性,即局部规则的微小改变将导致密文的大幅度变化,且具有易于实践、成本低等优点。由于有序细胞自动机具有平行结构简单、密钥量大和加密速度快的特点,所以这种加密技术非常适用于光学实现领域的应用。

关键词：细胞自动机图像处理图像加密光学实现密钥空间

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基于编码认证加密相结合的多媒体安全传输方案

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计算机工程 2005年第24期31卷 169-171,195页

作者：陆锦军王执铨南京理工大学自动化系

为了检测多媒体中的敏感数据是否被恶意篡改或传输错误,将多媒体编码过程与认证过程相结合,信道编码过程与加密过程相结合,构建了一种可靠的多媒体安全传输方案,敏感数据采用数字签名并将签名嵌入敏感区域,纠错编码与混沌流密码相结合,... 详细信息

为了检测多媒体中的敏感数据是否被恶意篡改或传输错误,将多媒体编码过程与认证过程相结合,信道编码过程与加密过程相结合,构建了一种可靠的多媒体安全传输方案,敏感数据采用数字签名并将签名嵌入敏感区域,纠错编码与混沌流密码相结合,实现信道的纠错和加密。理论实践表明,该方案计算复杂度低,既保证了安全性,又具有实时性,适用于图像、数据等多媒体的安全传输。

关键词：选择加密签名认证纠错编码多媒体传输

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光学图像压缩加密技术研究进展

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激光与光电子学进展 2023年第4期60卷 1-27页

作者：秦怡满天龙万玉红王兴北京工业大学理学部北京100124 南阳师范学院机电工程学院河南南阳473061

光波作为信息载体具有高速并行处理二维信息的能力及天然优势。光波的波长、振幅、相位、偏振等为光波的调制提供不同的维度和多种可能,也使得光学加密技术和光学密码系统展现出巨大的应用价值。随着加密数据传输量的急剧增长,在进行加... 详细信息

光波作为信息载体具有高速并行处理二维信息的能力及天然优势。光波的波长、振幅、相位、偏振等为光波的调制提供不同的维度和多种可能,也使得光学加密技术和光学密码系统展现出巨大的应用价值。随着加密数据传输量的急剧增长,在进行加密的同时实现信息的压缩变得愈加重要,因为这将缩短处理这些数据所需的时间并有效节约存储空间。提出广义的光学图像压缩加密的概念,并将压缩策略分为明文压缩、密文压缩和明文密文同步压缩。在此基础上,介绍适合每种策略的具体压缩方法,并通过阐述这些压缩方法在一些实例中的应用,综述了光学图像压缩加密技术的研究进展,也对未来的研究方向进行了展望。

关键词：光学信息安全压缩加密图像压缩光信息处理

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image encryption using separable reversible data hiding scheme

Image encryption using separable reversible data hiding sche...

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International Conference on Computing and Networking Technology (ICCNT)

作者： M. Smitha V. E. Jayanthi Ajitha Merlin Distributed Systems Group Vienna University of Technology Vienna Austria Research Group Software Architecture University of Vienna Vienna Austria

image encryption has a significant role in the field of cryptography. A new encryption scheme is introduced to protect an image from unauthorized access, in this scheme two separate keys are used for image encryption and data hiding with high degree of security. The content owner encrypts the original uncompressed image using an encryption key. The least significant bits (LSBs) of the encrypted image are compressed using a data hiding key to create space to embed an additional data. Run-Length Coding (RLC) and Haar Wavelet compression technique is employed to reduce the image size and facilitate faster transmission. Encrypted and decrypted sections, the quality of image retrieval and data extraction are achieved from RLC with their respective keys. In this scheme user can extract an image, data and both image and data based on the keys used.

关键词： encryption image coding Data mining Receivers Field programmable gate arrays image retrieval

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Motion vectors signs encryption for H.264/AVC

Motion vectors signs encryption for H.264/AVC

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International Conference on Advanced technologies for Signal and image Processing (ATSIP)

作者： N. Khlif T. Damak F. Kammoun N. Masmoudi Electrical department National School of Engineers of Sfax (ENIS) Sfax Tunisia

Currently, research is focused on selective encryption to protect movies against attacks transmitted over a public network. This choice is taken to ensure the security of compressed data without adding an important supplemental computational time for the encryption. So the encryption module is inserted into the video compression chain. In this paper we present an encryption method based chaos inserted in the H.264/AVC chain specially for the motion vectors signs. The results will be deducted according to the values of PSNR (Peak Signal to Noise Ratio), SSIM (Structural SIMilarity) and the encryption rate. Motion vectors signs encryption (MVSE) seems being interesting to lose the visual quality of the video for Inter predicted frames since movies are sensible to the motion sign.

关键词： encryption Vectors Video coding PSNR Mobile communication Quantization (signal)

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Hybrid image encryption algorithm based on compressive sensing, gray wolf optimization, and chaos

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JOURNAL OF ELECTRONIC IMAGING 2023年第4期32卷 043038-043038页

作者： Abdul-Kareem, Ali Akram Al-Jawher, Waleed Ameen Mahmoud Iraqi Commiss Comp & Informat Informat Inst Postgrad Studies Baghdad Iraq Uruk Univ Baghdad Iraq

Growing reliance on digital communications has necessitated development of dependable and secure technologies to ensure that the transmission and reception of images over the Internet do not pose a risk to the data of individuals and governments. We propose developing a hybrid image encryption and compression algorithm by combining compressive sensing, the gray wolf algorithm, and multi-dimensional chaotic systems. It aims to generate a highly secure encrypted image while conserving transmission and storage resources. This algorithm overlaps several stages designed to protect vital images while minimizing size. First, the image is converted to the frequency domain using the discrete wavelet transform. Then, the discrete wavelet transform coefficients are scrambled globally using the Waleed-Ali Map and the gray wolf algorithm. Second, the confused image is measured by a parameters-controlled matrix to reduce transmission costs. The final encrypted image is obtained after performing the diffusion operation with a bitstream derived from the Nahrain chaotic map. The average peak signal-to-noise ratio score was 53.1995, and the average mean squared error score was 0.6130, demonstrating that the plaintext and decrypted images are identical. The average correlation coefficient score was -0.010095;the average entropy analysis was 7.9987;and the average number of pixel change rate and unified average changing intensity analyses were 99.60 and 33.52, respectively. The experimental results demonstrate the algorithm's efficiency and robustness, as well as the high quality of the reconstructed image.

关键词： cryptography compression discrete wavelet transform gray wolf optimization Waleed-Ali Map chaotic map Nahrain chaotic map secure communication

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A robust and secure scheme for image communication over wireless channels

A robust and secure scheme for image communication over wire...

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Proceedings of the IEEE Circuits and Systems Symposium on Emerging technologies

作者： K. Deergha Rao Research and Training Unit for Navigational Electronics Osmania University Hyderabad India

Chaos based encryption may offer new quality in secure data transmission. Many chaotic image encryption and decryption algorithms have been reported in the literature. However, the feature of higher compression of the still image standard JPEG200 can not be achieved on the compression of chaotic images. The error resilient tools do not correct transmission errors. Furthermore, these tools do not apply to the image header which is the most important part of the codestream. To be suitable for wireless multimedia applications, JPEG 2000 has to be robust to transmission errors. Hence, in this paper, a scheme called chaotic JPEG2000 is proposed to utilize the higher compression feature of the JPEG2000 for secure image source coding. Further, the proposed chaotic JPEG2000 is robustified by turbo channel coding for image communication over wireless channels with burst errors. The efficacy of the proposed scheme is demonstrated though implementation results for an image communication over Gaussian impulsive noisy wireless channels.

关键词： Robustness image communication Communication system security Wireless communication Chaotic communication Transform coding image coding Cryptography Error correction Data communication

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A Lightweight Spatio-Color Scrambled EtC System for JPEG XS Standard

A Lightweight Spatio-Color Scrambled EtC System for JPEG XS ...

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International Conference on Information and Computer technologies (ICICT)

作者： Takayuki Nakachi Hiroyuki Kimiyama Mitsuru Maruyama University of the Ryukyus Nishihara Japan Daido University Nagoya Japan Kanagawa Institute of Technology Atsugi Japan

ISBN: (数字)9798350385625

ISBN: (纸本)9798350385632

In this paper, we propose a spatio-color scrambled encryption-then-compression (EtC) system for the JPEG XS standard to enhance security and invisibility. Previously, a line-based spatial scrambling scheme compatible with JPEG XS has been proposed for image encryption in EtC systems. This scheme enhances privacy protection by facilitating image encryption prior to compression. However, the visibility of color components remains unchanged from the original, while spatial components are scrambled. The proposed spatio-color scrambled EtC system for the JPEG XS standard introduces two color component scrambling techniques: RGB scrambling and YCbCr scrambling. Consequently, both security and invisibility performance are enhanced. Despite the introduction of color scrambling, the proposed EtC system maintains the same rate-distortion (RD) performance as the conventional spatial scrambling scheme. We demonstrate its efficacy through simulations using 8K ultra-high-definition images.

关键词： Privacy image coding image color analysis Computational modeling Transform coding Rate-distortion encryption

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A Hybrid Data Security Technique Using Chaos encryption, RC4 encryption, Huffman Data compression and LSB Steganography

A Hybrid Data Security Technique Using Chaos Encryption, RC4...

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Device Intelligence, Computing and Communication technologies, (DICCT), International Conference on

作者： Lalit Negi Sandeep Kumar Manisha Bharti Department of ECE National Institute of Technology Delhi New Delhi India

ISBN: (数字)9798350372847

ISBN: (纸本)9798350372854

Data must be compressed before being sent online, saving money and time. Encrypting the data and compressing it are also necessary to ensure secure and fast data transmission over the internet. This study presents an effective model based on chaos encryption using a piecewise logistic sine map, RC4 encryption, data compression, and LSB steganography. The results of the model are shown, along with a comparison with the other pre-existing models. The results of the proposed model are better than those of other pre-existing techniques in terms of various performance metrics, as discussed in the paper.

关键词： Chaos Performance evaluation Steganography image coding Data compression Data models Entropy

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Cryptanalysis of secure arithmetic coding based on interval swapping

Cryptanalysis of secure arithmetic coding based on interval ...

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International Conference & Expo on Emerging technologies for a Smarter World (CEWIT)

作者： Tao Xiang Chenyun Yu Jinyu Qu Xinwen Fu Department of Computer Science Chongqing University Chongqing China Department of Computer Science University of Massachusetts Lowell Lowell MA USA

Arithmetic coding is prevalent in compression for its remarkable performance, and it is also explored to design encryption schemes offering compression and secrecy simultaneously. Joint compression and encryption is a quite efficient and practical way to protect large volume of data, especially multimedia data, and numerous cryptosystem based on arithmetic coding have been proposed in recent years. In this paper, we present a new classification of secure arithmetic coding algorithms according to the selection of secret information. Then we analyze the security of encryption schemes based on interval swapping. We propose a simple yet efficient attack that could disclose the keystream that is used to make interval swapping decision. The attack works in static and content-based models of arithmetic coding.

关键词： encryption Encoding image coding Adaptation models Multimedia communication

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