The image compression–encryption algorithm based on the compression sensing and fractional-order chaotic system

2021 ◽  
Author(s):  
Ji Xu ◽  
Jun Mou ◽  
Jian Liu ◽  
Jin Hao
Keyword(s):  
Image Compression ◽  
Fractional Order ◽  
Chaotic System ◽  
Encryption Algorithm ◽  
Compression Sensing

scholarly journals A new image encryption algorithm based on the OF-LSTMS and chaotic sequences

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yi He ◽  
Ying-Qian Zhang ◽  
Xin He ◽  
Xing-Yuan Wang
Keyword(s):  
Image Encryption ◽  
Fractional Order ◽  
Chaotic System ◽  
Short Term Memory ◽  
Encryption Algorithm ◽  
Chaotic Sequences ◽  
Long Short Term Memory ◽  
Input Gate ◽  
And Diffusion ◽  
Image Encryption Algorithm

AbstractIn this paper, a novel image encryption algorithm based on the Once Forward Long Short Term Memory Structure (OF-LSTMS) and the Two-Dimensional Coupled Map Lattice (2DCML) fractional-order chaotic system is proposed. The original image is divided into several image blocks, each of which is input into the OF-LSTMS as a pixel sub-sequence. According to the chaotic sequences generated by the 2DCML fractional-order chaotic system, the parameters of the input gate, output gate and memory unit of the OF-LSTMS are initialized, and the pixel positions are changed at the same time of changing the pixel values, achieving the synchronization of permutation and diffusion operations, which greatly improves the efficiency of image encryption and reduces the time consumption. In addition the 2DCML fractional-order chaotic system has better chaotic ergodicity and the values of chaotic sequences are larger than the traditional chaotic system. Therefore, it is very suitable to image encryption. Many simulation results show that the proposed scheme has higher security and efficiency comparing with previous schemes.

Joint image compression and encryption algorithm using hyper-chaotic system

2014 ◽  
Vol 22 (9) ◽  
pp. 2528-2535
Author(s):  
王娣 WANG Di ◽  
邓家先 DENG Jia-xian ◽  
邓小梅 DENG Xiao-mei ◽  
邓海涛 DENG Hai-tao
Keyword(s):  
Image Compression ◽  
Chaotic System ◽  
Encryption Algorithm ◽  
Image Compression And Encryption

scholarly journals An Image Compression and Encryption Algorithm Based on the Fractional-Order Simplest Chaotic Circuit

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 22141-22155
Author(s):  
Haiying Hu ◽  
Yinghong Cao ◽  
Ji Xu ◽  
Chenguang Ma ◽  
Huizhen Yan
Keyword(s):  
Image Compression ◽  
Fractional Order ◽  
Encryption Algorithm ◽  
Chaotic Circuit ◽  
Image Compression And Encryption

An Asymmetric Image Encryption Algorithm Based on a Fractional-Order Chaotic System and the RSA Public-Key Cryptosystem

2020 ◽  
Vol 30 (15) ◽  
pp. 2050233
Author(s):  
Guodong Ye ◽  
Kaixin Jiao ◽  
Huishan Wu ◽  
Chen Pan ◽  
Xiaoling Huang
Keyword(s):  
Image Encryption ◽  
Fractional Order ◽  
Chaotic System ◽  
Encryption Algorithm ◽  
Public Key ◽  
Hyperchaotic System ◽  
System Equation ◽  
Rsa Algorithm ◽  
Image Protection ◽  
Image Encryption Algorithm

Herein, an asymmetric image encryption algorithm based on RSA cryptosystem and a fractional-order chaotic system is proposed. Its security depends on RSA algorithm. First, a pair of public and private keys is generated by RSA algorithm. Subsequently, a random message shown as plaintext key information is encrypted by the public key and RSA to achieve ciphertext key information. Next, a new transformation map is established to generate the initial key according to the ciphertext key information. Subsequently, the initial key is substituted into a fractional hyperchaotic system equation to calculate the keystream. Finally, permutation and diffusion operations are employed to encrypt a plain image to obtain the final cipher image. In the proposed algorithm, different keys for encryption and decryption are designed under an asymmetric architecture. The RSA algorithm and fractional chaotic system are combined to encrypt images; in particular, a fast algorithm for computing power multiplication is employed, which significantly improves the encryption effect and enhances the security. Simulation results show that the proposed algorithm is effective and applicable to image protection.

scholarly journals Color Image Compression-Encryption Algorithm Based on Fractional-Order Memristor Chaotic Circuit

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 58751-58763 ◽  
Author(s):  
Feifei Yang ◽  
Jun Mou ◽  
Kehui Sun ◽  
Yinghong Cao ◽  
Jiyu Jin
Keyword(s):  
Image Compression ◽  
Fractional Order ◽  
Color Image ◽  
Encryption Algorithm ◽  
Chaotic Circuit ◽  
Color Image Compression
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