XOR of Multiple Bytes - Procedure and Methods

[temujin]

Hi,

Short question,

I have to XOR multiple bytes. Is the right procedure to XOR first and second byte then XOR the result with the third byte and so on?

Or is there a different method?

t.

 

[MisterBig]

As far as I know an XOR operation can only have 2 operands.

Having said that I don't see why you couldn't have an operator with a truth table like so...

a b c 3bitXOR
0 0 0 0
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 1
1 1 1 0

And I think that would give you a different result to ((a XOR b) XOR c).

That's probably not helped! I suppose the mechanism to use depends on what you're trying to achive.

 

[willib]

a computer will ido a bit by bit XOR prducing a result of the same number of bits as the two operands.. an XOR is a Test or filter , if 101 is XORd with 010 the result is 111..
temujin what are you trying to do ?