public GF2Elem(GF2Elem copy)
	{
		if (copy.b.equals(BigInteger.ZERO))
			this.b=BigInteger.ZERO;
		else
			this.b=new BigInteger(copy.b.toString());
		this.m=copy.m;
		this.k=copy.k;
		bB=bigIntToIntArray(b);
	}