MATLAB: How to run the code

Question

https://in.mathworks.com/matlabcentral/fileexchange/45038-generate-digital-signature-of-images?focused=3805874&tab=function

I found this link for digital signature for images. This is exactly what I wanted. I saved all the functions. The main program is hash.m right? I tried running it, but got an error stating:

hash
Undefined function or variable 'METH'.
Error in hash (line 7)
    if(METH=='SHA160')

Answer 1

From the overview given by your link, the main function is:

function [digest, MSG_PADDED] = image_hash(V_LEN,H_LEN,METH,IMG_FILE)

There is also a list indicating what the arguments are, including METH