Image encryption based on a hyperchaotic hyperbolic optoelectronic oscillator and the Tetris game

Area of Science:

• Applied Physics
• Information Security
• Chaos Theory

Background:

• Hyperchaotic systems exhibit complex dynamics suitable for cryptography.
• Image encryption requires robust and efficient algorithms to protect sensitive data.
• Existing methods may lack efficiency or security against advanced attacks.

Purpose of the Study:

• To propose a novel image encryption scheme.
• To leverage hyperchaotic behavior for secure data transmission.
• To enhance image encryption efficiency and security.

Main Methods:

• Utilizing a hyperchaotic hyperbolic optoelectronic oscillator to generate a chaotic sequence.
• Implementing a simultaneous permutation-diffusion process with pixel rewriting and channel permutation.
• Employing a Tetris-inspired scrambling technique for pixel permutation.
• Generating a SHA-256 dependent hyperchaotic key stream.

Main Results:

• Demonstrated hyperchaos in a hyperbolic optoelectronic oscillator across a wide parameter range.
• Achieved efficient image encryption through simultaneous permutation and diffusion.
• The proposed scheme showed superior efficiency compared to existing methods.
• The encryption technique proved secure against common attack strategies.

Conclusions:

• The proposed hyperchaotic system and Tetris-inspired method provide an effective image encryption solution.
• The scheme offers a strong balance between efficiency and security.
• This approach contributes a novel technique to the field of image cryptography.