A new adaptive image steganography scheme based on DCT and chaotic map

Multimedia Tools and Applications - In this paper, a novel steganographic scheme is proposed based on chaotic map in the DCT domain. The proposed method apply the DCT on the cover image, scan the...     

A new scan pattern method for color image encryption based on 3D-Lorenzo chaotic map method

Multimedia Tools and Applications - Securing the exchange of digital images in the form of huge multimedia data over the internet with limited bandwidth emerges as a significant and sensitive...     

A novel color image encryption scheme based on a new dynamic compound chaotic map and S-box

Multimedia Tools and Applications - In modern technological era image encryption has become an attractive and interesting field for researchers. They work for improving the security of image data...     

A new method for image encryption by 3D chaotic map

Pattern Analysis and Applications - Image encryption is sensitive to various attacks due to the high volume of the data and similarity of the pixels in different images. Therefore, the encryption...     

An efficient image encryption algorithm based on a novel chaotic map

Multimedia Tools and Applications - In this paper, we propose a novel low dimensional chaotic map, namely, compounded piecewise linear map (CPLM) in order to balance between security and...     

一种新的基于混沌映射的密钥分享的叠像术

随着计算机网络的普及和应用,信息安全问题已经成为迫切解决的问题。传统的加密和信息隐藏已不能满足现代通信的需要。该文提出了一种新的基于混沌映射和密钥分享的叠像术,使得信息在网络上的传输更具有安全性。     

A novel technique for image steganography based on a high payload method and edge detection

Image steganography has received a lot of attention during the last decade due to the lowering of the cost of storage media, which has allowed for wide use of a large number of images. We present a novel technique for image steganography which belongs to techniques taking advantage of sharp areas in images in order to hide a large amount of data. Specifically, the technique is based on the edges present in an image. A hybrid edge detector is used for this purpose. Moreover, a high payload technique for color images is exploited. These two techniques are combined in order to produce a new steganographic algorithm. Experimental results show that the new method achieves a higher peak signal to noise ratio for the same number of bits per pixel of embedded image.     

A modified method for image encryption based on chaotic map and genetic algorithm

Multimedia Tools and Applications - The security of digital data has been attending more than past, spatially image data security. In this study, a hybrid image encryption method has been proposed...     

A novel image encryption algorithm based on chaotic shuffling method

This article proposes a novel image encryption algorithm based on a chaotic shuffling-diffusion method. First, a chaotic sequence which is generated by a first logistic map is used to label the row coordinate of pixels of the scrambled image. Second, a second logistic map is used to label the column coordinate of pixels of the scrambled image. Then, using our proposed new pixel exchange model to change the position of pixels, we can achieve the effect of scrambling the image. Third, a matrix that is the same size as the plain image is generated by a third logistic map in order to enlarge the key space according to MOD operation and XOR operation by itself. Furthermore, the key sum is related to the plaintext, which makes the encryption system extremely sensitive to resist a chosen-plaintext attack. The simulation results show that this algorithm has properties of big key space, high sensitivity to key, and the ability to resist statistical analysis, differential attacks, plaintext attacks, and chosen-plaintext attacks so that it has higher security and can be suitable for image encryption.     

A new color image encryption algorithm based on DNA and spatial chaotic map

Multimedia Tools and Applications - In this paper, a color image encryption algorithm based on DNA encoding combined with logistic map and spatial map is proposed. Firstly, the algorithm carries...     

An improved method for digital image fragile watermarking based on chaotic maps

In this paper, the digital image fragile watermarking method based on chaotic maps is proposed. Our method has some significant advantageous in comparison with other available methods. Firstly, we reduce watermark payloads, while they have high quality of recovery and security. In watermark embedding phase, we process the image in order to produce the information array for each block, which finally embedded in the host image to build watermarked image. The information array for each block has different length, which is defined based on block characteristic that could be smooth or rough. The second superiority of the proposed method is proposing a new metric for calculating roughness of image block, which leads to less consume of bandwidth in comparison with other available methods. Finally, we use chaotic map for block-mapping that enhances the security. Our method provides basic requirements of watermarking scheme such as, invisibility, recover quality and security. Experimental Results have proved that our method is powerful in tamper detection, self-recovery and robust against known watermarking attacks.     

A novel image encryption scheme based on multi-directional diffusion technique and integrated chaotic map

Neural Computing and Applications - In recent years, many researchers have used chaos maps to encrypt digital images due to their unpredictability, ergodicity, and sensitivity to initial values....     

A new efficient medical image cipher based on hybrid chaotic map and DNA code

In this paper, we propose a novel medical image encryption algorithm based on a hybrid model of deoxyribonucleic acid (DNA) masking, a Secure Hash Algorithm SHA-2 and a new hybrid chaotic map. Our study uses DNA sequences and operations and the chaotic hybrid map to strengthen the cryptosystem. The significant advantages of this approach consist in improving the information entropy which is the most important feature of randomness, resisting against various typical attacks and getting good experimental results. The theoretical analysis and experimental results show that the algorithm improves the encoding efficiency, enhances the security of the ciphertext, has a large key space and a high key sensitivity, and is able to resist against the statistical and exhaustive attacks.

     

彩色图像的混沌加密算法

提出了一种新的基于Lorenz混沌系统的彩色图像加密算法。对Lorenz系统输出的实值混沌序列进行改进,使之近似均匀分布,得到更适合图像加密的伪随机序列。利用改进后的序列生成置乱和变换矩阵,按规则分块对彩色图像三基色分量进行置乱和按位异或等加密运算。仿真实验和安全性分析的结果表明,该算法密钥空间大,具有较好的加密效果和加密效率,且具有较好的抗干扰性。     

An image encryption algorithm based on a novel 1D chaotic map and compressive sensing

Multimedia Tools and Applications - A new image encryption algorithm is presented based on a novel chaotic map and compressive sensing with excellent performance. At first, the sparse coefficient...     

A novel quantum image steganography algorithm based on exploiting modification direction

Multimedia Tools and Applications - Quantum image steganography is the art and science of hiding secret information into quantum carrier images. This paper proposes a novel quantum image...     

A novel local binary pattern based blind feature image steganography

Multimedia Tools and Applications - Steganography methods in general terms tend to embed more and more secret bits in the cover images. Most of these methods are designed to embed secret...     

A pixel permutation based image encryption technique using chaotic map

Multimedia Tools and Applications - In the last decade, with a rapid increase in multimedia productions, image encryption has become a significant part of information security. The inherent image...     

A new simple one-dimensional chaotic map and its application for image encryption

Multimedia Tools and Applications - In this paper, we propose a new simple one-dimensional chaotic map. The chaotic characteristics have been declared by using bifurcation analysis and Lyapunov...