Q$6.($a$)$ Consider radix$-64($R$64)$ conversion as a form of encryption. In this case, there is no key. But suppose that an opponent knew only that some form of substitution algorithm was being used to encrypt English text and did not guess that it was R$64.$ How effective would be this algorithm be against cryptanalysis?

$($b$)$ Based on what you have learned in Network Security, is it possible in Secure Socket Layer $($SSL$)$ for the receiver to reorder SSL record blocks that arrive out of order? If so$,$ explain how it can be done. If not, why not?