- #1

- 92

- 0

## Homework Statement

* note that I meant fields in the abstract mathematical sense,

**not**physical (i.e. electric) fields! *

Finding the determinant of a matrix in GF(2

^{8})

I want to know if it is using mod 256 or mod 255 in the field of GF(2

^{8})

## Homework Equations

Just math

## The Attempt at a Solution

I found the determinant of a matrix no problem. Everything in between is all good. What I want to know is that in the field of GF(2

^{8}), am I taking the number mod 255 or mod 256?

I know that there are a total of 256 elements in the field, but I'm just not sure which mod to take for the final answer, since it is a negative determinant.