Multiple Digital Image Encryption Algorithm Based on Chaos Algorithm

• Published in: Mobile networks and applications Vol. 27; no. 4; pp. 1349 - 1358
• Main Authors: Zhang, Ying, He, Yi, Zhang, Jing, Liu, Xiaobo
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.08.2022; Springer Nature B.V
• Subjects: Algorithms; Chaos theory; Communications Engineering; Computer Communication Networks; Data encryption; Digital imaging; Discrete cosine transform; Electric power; Electrical Engineering; Electricity distribution; Encryption; Engineering; IT in Business; Networks; Orbits; Pixels; Time series; Logistic chaotic map; Lorenz chaotic system; Encryption algorithm; Chaotic algorithm; Chaotic key sequence; Ciphertext image; Discrete cosine transform
• ISSN: 1383-469X; 1572-8153
• DOI: 10.1007/s11036-022-01923-9

In this study, a multiple digital image encryption algorithm based on chaos algorithm is presented. The cyclic matrix is constructed by logical mapping, and sparse transformation of plaintext image is realized by discrete cosine transform (DCT). The gray image of DCT is measured, and several digital images are merged. Lorenz chaotic system and logistic map are adopted to generate chaotic key sequence related to plaintext image features, replace pixel value, scramble pixel position, diffuse image, and finally obtain ciphertext image. It encrypts many kinds of digital images. The proposed encryption algorithm has excellent image encryption effect and high security.