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2000
Volume 18, Issue 4
  • ISSN: 2352-0965
  • E-ISSN: 2352-0973

Abstract

Background

Current work is associated with the deployment of synchronized chaotic Secure Hash Algorithm (SHA256) random number generators along with their application in image encryption.

Methods

This study aimed to design a perfect communication system to encrypt and decrypt the images image processing. We introduced a new sliding mode scheme for master-slave four-dimensional (4D) Lorenz-Stenflo systems to deal with the synchronization problem. Then, a new synchronized dynamic secure hash algorithm (SHA-256) was implemented to generate the dynamic random numbers.

Results

An image encryption and decryption mechanism was implemented by using synchronized chaotic master-slave systems corresponding to the generated hash values. Here, the master systems were used for encryption, and the slave systems were responsible for the decryption mechanism. The complete design of this paper was implemented in a Python environment.

Conclusion

The demonstration of simulation results includes the state responses, strange attractors, and synchronization error responses of master-slave chaotic systems with appropriate switching functions and control input.

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2025-09-04

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Employment of Synchronized Chaotic SHA256 Random Number Generators along with their Application in the Field of Image Encryption
Recent Advances in Electrical & Electronic Engineering 18, 456 (2025); https://doi.org/10.2174/0123520965269595231108065832
/content/journals/eeng/10.2174/0123520965269595231108065832
/content/journals/eeng/10.2174/0123520965269595231108065832
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  • Article Type:     Research Article
Keyword(s): chaotic key stream; Chaotic master-slave systems; image encryption; non-NSA inventors; secure hash algorithm (SHA)-256 random number generators; sliding mode technique

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