Secure Image Encryption Using Chaotic, Hybrid Chaotic and Block Cipher Approach

. 2022 Jun 10;8(6):167. doi: 10.3390/jimaging8060167

Algorithm 2: Hybrid chaotic map (I)

Input: Input: $I_{p} \leftarrow$ Any Square image

Output: Output: $I_{e} \leftarrow$ New encrypted image

1 $n u m \leftarrow$ n, $r o w \leftarrow$ r, $c o l \leftarrow$ c

2 $I_{a} \leftarrow$ ACM(I)

3 $I_{1} (m, m) \leftarrow$ Shuffle(I)

4 $(C_{1}, C_{2}) \leftarrow$ LogisticMap()

5 $(S_{x}, S_{y}) \leftarrow (S o r t (C_{1}), S o r t (C_{2}))$

6 for $i = 2$ to m do

7 for $j = 0$ to m do

8 if $(m o d (j, 2) = = 0)$ then

9 $I^{″} (i, j) = I^{'} (i - 1, j - 1) (X O R) i_{x} (k), k = 1, 2, 3 \dots \dots . . (m / 2);$

10 else

11 $I^{″} (i, j) = I^{'} (i - 1, j - 1) (X O R) i_{y} (k), k = 1, 2, 3 \dots \dots . . (m / 2);$

12 end if

13 end for

14 end for

15 return $I_{e}$