Difference between a+b and bit32.band(a+b)
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- Subject: Difference between a+b and bit32.band(a+b)
- From: waspoza <waspoza@...>
- Date: Fri, 9 Sep 2011 14:55:57 +0200
Hi,
I'm a fresh lua user and i stumbled upon a interesting thing in sha256
algorithm from page: http://lua-users.org/wiki/SecureHashAlgorithm
In digestblock function there is a line: H[1] = band(H[1] + a).
Why addition result is being passed to binary and funcion? In same
function there are other additions without 'and', so i dont really
understand whats the point of it.
TIA.