[EDIT:] For those who didn&#x27;t read the article, this is a cute parlor trick, but RC4 is broken and should not be used.  If you really want a small cipher, use TEA or one of its more recent variants.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Tiny_Encryption_Algorithm" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Tiny_Encryption_Algorithm</a>