A novel encryption scheme based on the composite chaotic system
Abstract：Based on compound chaotic systems with variable control parameters, a novel image encryption scheme is proposed. Firstly, the system parameter of the Logistic map is chosen according to the map itself and a nonlinear coupled function is constructed with a 3D chaotic system to scramble the pixels of the plain- text. At the same time, gray-level transformation is operated after each round of scrambling according to the chaotic sequences and plaintext. Hence, the proposed algorithm owns the characteristics necessary for crypto- system such as confusion and diffusion, etc. Simulation experiments and the security analysis indicate that the proposed scheme has a large key space together with excellent statistical properties, and can resist exhaustive attack, differential attack and ehosen-plaintext attack, etc.
Keywords：variable control parametersimage encryptionlogistic mapsecurity analysisdifferential attack
Publication Date：2012-10-31
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 717-721 )