An Improved Secure Image Encryption Algorithm Based on Rubik's Cube Principle and Digital Chaotic Cipher

Figure 9

Decrypted images (a) under salt and pepper noise attack, (b) under speckle noise attack, and (c) under cropping attack. (Test conditions: 𝛼=3, 𝛽₁=10, and 𝛽₂=10.)

(a)

(b)

(c)