Thread: XOR Help ?

Could someone give me a rough outline of whats going on with XOR, i understand truth tables, from what i can make out that has something to do with it, is it just a case of substituting bytes according to a key ?

I probably sound insanely misinformed, apologied.

If someone could direct me to a site or explain it to me, id be extremely grateful.

Thx in advance.

XOR simply means a or b but not both.

It is quite useful in encryption, because it is bitwise reversible from a key, unlike OR and AND.

Xor is very useful...

Like the instant set to 0:

variable ^= variable;

or swapping two variables without a temp variable

a ^= b;
b ^= a;
a ^= b;