Image encryption schemes for JPEG and GIF formats based on 3D baker with compound chaotic sequence generator
This work addresses secure encryption for widely used image formats like JPEG and GIF, though it appears incremental as it adapts an existing chaotic encryption method to new formats.
The paper tackled the problem of encrypting JPEG and GIF image formats by adapting a 3D baker-based chaotic encryption scheme to avoid lossy compression in JPEG and preserve animation in GIF, with security tests indicating high security.
This paper proposed several methods to transplant the compound chaotic image encryption scheme with permutation based on 3D baker into image formats as Joint Photographic Experts Group (JPEG) and Graphics Interchange Format (GIF). The new method averts the lossy Discrete Cosine Transform and quantization and can encrypt and decrypt JPEG images lossless. Our proposed method for GIF keeps the property of animation successfully. The security test results indicate the proposed methods have high security. Since JPEG and GIF image formats are popular contemporarily, this paper shows that the prospect of chaotic image encryption is promising.