Image encryption with chaotically coupled chaotic maps. (English) Zbl 1148.94431

Summary: We present a novel secure cryptosystem for direct encryption of color images, based on chaotically coupled chaotic maps. The proposed cipher provides good confusion and diffusion properties that ensures extremely high security because of the chaotic mixing of pixels’ colors. Information is mixed and distributed over a complete image using a complex strategy that makes known plaintext attack unfeasible. The encryption algorithm guarantees the three main goals of cryptography: strong cryptographic security, short encryption/decryption time, and robustness against noise and other external disturbances. Due to the high speed, the proposed cryptosystem is suitable for application in real-time communication systems.


94A60 Cryptography
68P25 Data encryption (aspects in computer science)
37D45 Strange attractors, chaotic dynamics of systems with hyperbolic behavior
94A08 Image processing (compression, reconstruction, etc.) in information and communication theory
Full Text: DOI


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