A Secure Image Encryption Algorithm Based on Rubik's Cube Principle

Figure 2

Key sensibility for image encryption using the proposed algorithm.

(a) Original image: Lena

(b) Encrypted image (a) with key 𝐾₁

(c) Encrypted image (a) with key 𝐾₂

(d) Image difference between (b) and (c)

(e) Original image: Black

(f) Encrypted image (e) with key 𝐾₁

(g) Encrypted image (e) with key 𝐾₂

(h) Image: difference between (f) and (g)

(i) Original image: Baboon

(j) Encrypted image (i) with key 𝐾₁

(k) Encrypted image (i) with key 𝐾₂

(l) Image difference between (j) and (k)

(m) Original image: Checkerboard

(n) Encrypted image (m) with key 𝐾₁

(o) Encrypted image (m) with key 𝐾₂

(p) Image: difference between (n) and (o)