期刊
INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS
卷 30, 期 15, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0218127420502338
关键词
RSA; image encryption; fractional-order chaotic system; security
资金
- National Natural Science Foundations of China [61702116, 61972103]
- Natural Science Foundation of Guangdong Province of China [2019A1515011361]
- Postgraduate Education Innovation Projects of Guangdong Ocean University of China [202031, 201925]
- Project of Enhancing School with Innovation of Guangdong Ocean University of China [Q18306]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据