A Self-synchronized Image Encryption Scheme
This work addresses the need for improved encryption methods in image processing, but it appears incremental as it builds on existing chaotic encryption techniques with specific optimizations.
The authors tackled the problem of secure and efficient image encryption by proposing a word-based chaotic encryption scheme for grayscale images, which operates in both synchronous and self-synchronous modes and is shown to pass security tests while being faster than existing schemes, even with lightweight short key sizes.
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.