* This will shorten the input string to len [outputLen], with bitwise xor the bytes The length of the input string/outputLen must be both even number, And outputLen must be a positive and even divisor of the input length, and cannot be 1 or input length i.e.

* * Idea from here: https://stackoverflow.com/questions/2253693/shortening-rehashing-uuids * TL;DR: * This will preserve the distribution characteristics.

* This method will further shorten the uuid to 8 character i.e.