Algorithm 1. Image IP, EHR, and WM Encryption using HC, and LSB embedding of data bits in DCP

Input: Grayscale M × N Secret Image, a hyperchaotic map with the initial values $s1, s2, s3, s4\prime$ and control parameters a, b, e, t, l1, l2, l3.

Output: Stego Image (SI) of size M × N

BEGIN $s1, s2, s3, s4$ ← initial condition for hyperchaos a, b, e, t, l1, l2, l3 ← control parameters for hyperchaos for n = 2: x2 $\dot{s_{1\left(\mathrm{n}+1\right)}}$= $a\left(s_2- s_1\right)+ l_1{s}_4$ $\dot{s_{2\left(\mathrm{n}+1\right)}}= e{s}_1- s_1{s}_3+ l_2{s}_4$ $\dot{s_{3\left(\mathrm{n}+1\right)}}$ = −b$s_3- s_1{s}_2+ l_3{s}_{4,}$ $\dot{s_{4\left(\mathrm{n}+1\right)}}=- t{s}_1$ end for Calculate $x_1^j$, $x_2^j$, $x_3^j$ and $x_4^j$ as state variables to perform key sequences ${(S_i^a)}^j$ and ${(S_i^b)}^j$ concatenate the values as $S^j$ $S^j = [{(S_1^a)}^j, {(S_2^a)}^j, {(S_3^a)}^j, {(S_4^a)}^j, {(S_1^b)}^j, {(S_2^b)}^j, {(S_3^b)}^j$, ${(S_4^b)}^j$], Obtain PRN sequence as $k = \left[S^1, S^2,S^3,\dots ,S^{m\times n}\right]$ resize the input image for rounds ←   1: x    for rounds  ← 1: y Interpolate using Equations (1)–(4) end for end for Data vector=[WM: EHR]    for rounds   ←   1: length (Data vector) Data=Data vector ⊕ k end Start embedding data in LSB’s of DCP pixels of the cover image by encrypted data vector (Data) END