Color Image Encryption Based on an Evolutionary Codebook and Chaotic Systems

Area of Science:

• Computer Science
• Information Security
• Cryptography

Background:

• Image encryption is crucial for securing sensitive visual data.
• Existing methods often combine scrambling and encoding but require enhanced randomness.
• High security demands necessitate advanced encryption techniques for digital images.

Purpose of the Study:

• To propose a novel and secure method for color image encryption.
• To enhance the randomness of both scrambling and encoding processes.
• To improve the overall security of cipher images against attacks.

Main Methods:

• Utilizes a complete bit-level operation for extensive scrambling of image bits.
• Applies a sweeping operation to further enhance encryption security.
• Employs a dynamic codebook based on chaotic systems and evolutionary operations for final encryption.

Main Results:

• The proposed method securely encrypts color images, producing robust cipher images.
• Experimental results demonstrate enhanced security compared to state-of-the-art methods.
• The encryption process exhibits improved randomness in both scrambling and encoding.

Conclusions:

• The new encryption approach effectively secures color images.
• The method offers practical potential for content protection in applications requiring high image security.
• The enhanced randomness and security features make it suitable for critical data protection.