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This paper proposed several methods to transplant the compound chaotic imageencryption scheme with permutation based on 3D baker into image formats asJoint Photographic Experts Group (JPEG) and Graphics Interchange Format (GIF).The new method averts the lossy Discrete Cosine Transform and quantization andcan encrypt and decrypt JPEG images lossless. Our proposed method for GIF keepsthe property of animation successfully. The security test results indicate theproposed methods have high security. Since JPEG and GIF image formats arepopular contemporarily, this paper shows that the prospect of chaotic imageencryption is promising.

Image encryption schemes for JPEG and GIF formats based on 3D baker with compound chaotic sequence generator