Image Encryption Algorithm Based on Image Element and DFRCT

2012 ◽  
Vol 532-533 ◽  
pp. 1403-1408
Author(s):  
Gui Liang Zhu ◽  
Xiao Li Qin ◽  
Xiao Qiang Zhang
Keyword(s):  
Image Encryption ◽  
Encryption Algorithm ◽  
Image Block ◽  
Cosine Transform ◽  
Evaluation Indexes ◽  
Encryption And Decryption ◽  
Set Up ◽  
Arbitrary Period ◽  
Brute Force Attack ◽  
Image Encryption Algorithm

A discrete fractional cosine transform with arbitrary period is proposed, which is a linear combination of discrete fractional cosine transform (DFRCT). We propose a new image encryption algorithm based on the discrete fractional cosine transform with arbitrary period, and set up some experiments by the different image block methods. The specific steps of encryption and decryption are given, and this encryption algorithm in items of many evaluation indexes is analyzed. The results of the detailed analysis demonstrate that the encryption algorithm effectiveness, efficiency and ability to resist brute-force attack are satisfying.

Image Encryption Algorithm Based on Chaos and S-Boxes Scrambling

2010 ◽  
Vol 171-172 ◽  
pp. 299-304 ◽  
Author(s):  
Zhuo Hui Xian ◽  
Shi Liang Sun
Keyword(s):  
Image Encryption ◽  
Chaotic Maps ◽  
Encryption Algorithm ◽  
Brute Force ◽  
Simulation Experiments ◽  
Encryption Algorithms ◽  
Brute Force Attack ◽  
Image Encryption Algorithm

Due to some features of images, traditional encryption algorithms are not suitable for practical image encryption. Considering this problem, a novel feistel network image encryption algorithm is proposed in this paper. Taking advantage of the desirable properties of mixing and sensitivity to initial parameters of chaotic maps, a sub key generator with couple chaotic maps is presented in this scheme. Meanwhile, the encryption algorithm includes a new mixing algorithm which is designed with thirty s-boxes of AES. To enhance the security of the new scheme, the encryption processes were combined in feistel network. The results of analysis and simulation experiments indicate that the scheme is secure and performed well in preventing attacks, such as brute force attack, entropy attack and statistics attack.

scholarly journals IMAGE ENCRYPTION FOR SECURE INTERNET TRANSFER

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
V Goutham Bharadwaja ◽  
Yashas M S ◽  
Yathendra Yadav T V ◽  
Gelvesh G
Keyword(s):  
Image Encryption ◽  
Input Image ◽  
Encryption Algorithm ◽  
Secret Key ◽  
Image Transfer ◽  
Important Data ◽  
Aes Algorithm ◽  
Encryption And Decryption ◽  
Chaos Sequence ◽  
Image Encryption Algorithm

Security is a crucial side to preserve the confidentiality of information such as pictures and text. The probability of an assailant attempting to access the image in the course of transferring process is high as assailant may get hold of important data. Therefore, encryption methods are used for securing the data. A novel image encryption algorithm that is a combination of the AES algorithm and the chaos sequence is proposed in this paper. The project will use AES for encryption and decryption of the image transfer because AES is capable of solving problem that cannot be resolved by different algorithms. The original image is transformed into cipher-image using a share secret key and this process is called encryption while the reverse of encryption process is known as decryption. This method’s sensitivity to the initial values and input image, even the tiniest changes within these values will result in significant changes in the encrypted image. We show that this approach can shield the image against different attacks exploitation using histogram analysis.

An Image Encryption Algorithm Based on Oversampled Chaotic Map

2013 ◽  
Vol 694-697 ◽  
pp. 2016-2020
Author(s):  
Shu Cong Liu ◽  
Yan Xing Song ◽  
Jing Song Yang
Keyword(s):  
Image Encryption ◽  
Chaotic Map ◽  
Chaotic Sequence ◽  
Transmission System ◽  
Encryption Algorithm ◽  
Chaotic Mapping ◽  
Key Space ◽  
Encryption And Decryption ◽  
Simulation Results ◽  
Image Encryption Algorithm

A new image encryption algorithm based on chaotic sequence is proposed, and the over sampled techniques is used in the Chebyshev mapping and Logistic chaotic mapping to generate multi-parameter chaotic key.A chaotic image encryption transmission system is build to achieve the encryption and decryption of the image signal,and the security and the encryption properties of the algorithm are analyzed. Simulation results show that the method ia simple and easy to achieve, and with larger key space ang good encryption effect.

scholarly journals An image encryption algorithm with a novel chaotic coupled mapped lattice and chaotic image scrambling technique

2021 ◽  
Vol 21 (2) ◽  
pp. 1103
Author(s):  
Behrang Chaboki ◽  
Ali Shakiba
Keyword(s):  
Image Encryption ◽  
Encryption Algorithm ◽  
Brute Force ◽  
Data Loss ◽  
Security Measures ◽  
Image Scrambling ◽  
Differential Attack ◽  
Key Sensitivity ◽  
Brute Force Attack ◽  
Image Encryption Algorithm

In this paper, we build a novel chaotic coupled lattice mapping with positive Lyapunov exponent, and introduce a novel chaotic image scrambling mechanism. Then, we propose a chaotic image encryption algorithm which uses the introduced chaotic coupled lattice mapping to apply permutation by iteratively applying the introduced chaotic image scrambling mechanism, and diffusing the pixel values. We use a sorting approach rather than quantizing the chaotic floating-point values to construct the diffusion matrix. We also study the security of the proposed algorithm concerning several security measures including brute-force attack, differential attack, key sensitivity, and statistical attacks. Moreover, the proposed algorithm is robust against data loss and noise attacks.

scholarly journals Image encryption algorithm for torsional components of generator based on compound chaotic model

2020 ◽  
Vol 24 (3 Part A) ◽  
pp. 1473-1480
Author(s):  
Yu Shao
Keyword(s):  
Discrete Cosine Transform ◽  
Image Encryption ◽  
Strong Correlation ◽  
Random Phase ◽  
Encryption Algorithm ◽  
Chaotic Encryption ◽  
Image Information ◽  
Cosine Transform ◽  
Chaotic Model ◽  
Image Encryption Algorithm

In order to solve the problem that the image encryption algorithm cannot eliminate the strong correlation between adjacent pixels in the image, with poor ability to resist attack and low efficiency, an Image encryption algorithm for torsional components of generators based on complex chaotic model is proposed. Extracting the RGB torsional vibration component of the image for discrete cosine transform transformation, it is then rotated and fused to complete the initial encryption of the image information. In order to further enhance the security of image information, 2-D discrete cosine transform and 2-D compressed sensing measurement are applied to the initial encrypted image information. The real number matrix of measurement is merged into the complex value matrix, and the adaptive random phase coding is applied. The image information complex chaotic encryption model is constructed according to the coding result, so as to eliminate the strong correlation between the adjacent pixels. Particle swarm optimization is used to co-ordinate and optimize the parameters of the compound chaotic encryption model to improve the encryption performance of the model. Experimental results show that the pixel has low correlation, high security and strong ability to resist attacks after encrypting with this algorithm.

Image Encryption Algorithm Based on Substitution Principle and Shuffling Scheme

2020 ◽  
Vol 38 (3B) ◽  
pp. 98-103
Author(s):  
Atyaf S. Hamad ◽  
Alaa K. Farhan
Keyword(s):  
Image Encryption ◽  
Chaotic Map ◽  
Logistic Map ◽  
Encryption Algorithm ◽  
Second Phase ◽  
Cipher Text ◽  
The Face ◽  
Substitution Principle ◽  
2D Logistic Map ◽  
Image Encryption Algorithm

This research presents a method of image encryption that has been designed based on the algorithm of complete shuffling, transformation of substitution box, and predicated image crypto-system. This proposed algorithm presents extra confusion in the first phase because of including an S-box based on using substitution by AES algorithm in encryption and its inverse in Decryption. In the second phase, shifting and rotation were used based on secrete key in each channel depending on the result from the chaotic map, 2D logistic map and the output was processed and used for the encryption algorithm. It is known from earlier studies that simple encryption of images based on the scheme of shuffling is insecure in the face of chosen cipher text attacks. Later, an extended algorithm has been projected. This algorithm performs well against chosen cipher text attacks. In addition, the proposed approach was analyzed for NPCR, UACI (Unified Average Changing Intensity), and Entropy analysis for determining its strength.

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