On the Cryptanalysis of a Bit-Level Image Chaotic Encryption Algorithm

Figure 7

Original images, ciphertext images, recovered permutated images, recovered images, and difference images of grayscale images of Lena, Baboon, and Pepper. (a) Lena original grayscale image. (b) Lena ciphertext image. (c) Lena recovered permutated image. (d) Lena recovered image. (e) Lena difference image. (f) Baboon original grayscale image. (g) Baboon ciphertext image. (h) Baboon recovered permutated image. (i) Baboon recovered image. (j) Baboon difference image. (k) Pepper original grayscale image. (l) Pepper ciphertext image. (m) Pepper recovered permutated image. (n) Pepper recovered image. (o) Pepper difference image.

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