ALGORITHM 1: The embedded algorithm on the sender side

Input: As input, this function will take the encrypted text message prepared in section III-A and the Cover Image.

Output: It will print the Stego Image that has been encoded.

Begin

1 Read the Cover Image and cipher Text Message.

2 Use the Encryption Technique to secure the message, we can use (1) Caesar Cipher or (2) Vigenère cipher

3 Traverse through the Image

4 fori= 1 toheight

5 for j= 1 towidth

6 Ifmore bits are remaining to embed

7 Find the Least Significant Bit of the current pixel using a hash function

8 SB1= mod (((i−1) * height+j), 13)

9 SB= mod (SB1,4)

10 Replace the message bit with Least Significant bitSB

11 Update the current pixel of output with a new value

12 if the pixel value increases, replace all the right-side bits of the changed bit with zeros. and if the pixel value decreases, then replace the right bits of the changed bit with ones.

13 End

14 End

15 End

16 Calculate theMSEusing the input and output pixel values

17 Calculate thePSNRusing the calculatedMSE

18 Save the Stego image

19 End