I have downloaded DES code from file exchange and try to modify it a bit but it gives error which I cannot figure out whats wrong with hit. Here is the part of the code
function [varargout] = DES(~,~)
input64 = '1234567890123456789012345678901234567890123456789012345678901234' ;
mode = 'ENC';
narginchk(1,3); error at this line.
Error using DES (line 64)
Not enough input arguments.