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As a little project (nothing mission critical), I decided to try and write an implementation of GOST 28147-89 in C#. However, while reading through RFC 5830 (an informational defining GOST 28147-89), I noticed this.
(+) is a bitwise addition of the words of the same length modulo 2.
[+] is an addition of 32-bit vectors modulo 2^32.
What is the difference between these two, mainly the first specifying bitwise addition, and the second simply stating addition?
Since it says ‘modulo 2’, I have to assume that they just mean add each bit separately without carry.
So
I can’t think of a particularly good use for this, as it’s essentially the same as an xor though.