[CodeRipper]

XOR is commutative, associative, and its own inverse.
More reads:
https://math.stackexchange.com/questions/961441/xor-is-commutative-associative-and-its-own-inverse-are-there-any-other-such-f

https://stackoverflow.com/questions/...unction-to-xor
https://news.ycombinator.com/item?id=11251961