MATLAB: Code for pseudo random index generator

image processing

in our project we have pseudo random index generator for generating set of keys with which we select some of the keys and encrypt the image.sir ,please can you provide the basic idea for us how to write the code for it?

Best Answer

You provide little information, but this might help:
AllKeys = [10 13 22 -9 0 12345]
N = 3 ; % randomly select N of these keys
IDX = randperm(numel(AllKeys), N)
KeysSelected = AllKeys(IDX)
Related Question