Cryptanalysis of an Image Block Encryption Algorithm Based on Chaotic Maps

Abstract

Recently, an image block encryption algorithm was proposed based on some well-known chaotic maps. The authors claim that the encryption algorithm achieves enough security level and high encryption speed at the same time. In this paper, we give a thorough security analysis on the algorithm from the perspective of modern cryptology and report some critical security defects on the algorithm. Given five chosen plain-images and the corresponding cipher-images, the attacker can obtain an equivalent secret key to successfully decrypt the other cipher-images encrypted with the same secret key. In addition, each security metric adopted in the security evaluation on the algorithm is questioned. The drawn lessons are generally applicable to many other image encryption algorithms.

arXiv comment9 pages

References in corpus (6)

• Cryptographic requirements for chaotic secure communications
• Dynamic Analysis of Digital Chaotic Maps via State-Mapping Networks
• Cryptanalysis of a Chaotic Image Encryption Algorithm Based on Information Entropy
• Generating Multi-Scroll Chua's Attractors via Simplified Piecewise-Linear Chua's Diode
• Cracking a hierarchical chaotic image encryption algorithm based on permutation
• The Graph Structure of the Generalized Discrete Arnold's Cat Map