A Self-synchronized Image Encryption Scheme

TL;DR

This paper introduces a novel word-based chaotic image encryption scheme that functions in both synchronous and self-synchronous modes, offering improved speed and security for gray images.

Contribution

The paper presents a new chaotic encryption scheme that operates efficiently in finite fields and supports both synchronization modes, with enhanced speed and security features.

Findings

Passes various security tests

Operates faster than existing schemes

Effective with lightweight short keys

Abstract

In this paper, a word based chaotic image encryption scheme for gray images is proposed, that can be used in both synchronous and self-synchronous modes. The encryption scheme operates in a finite field where we have also analyzed its performance according to numerical precision used in implementation. We show that the scheme not only passes a variety of security tests, but also it is verified that the proposed scheme operates faster than other existing schemes of the same type even when using lightweight short key sizes.