/// <summary>
/// Constructs a matrix containing all values of 0x00.
/// </summary>
/// <param name="g"> The GF(2^8) field being used. </param>
/// <param name="s"> The S-Box being used. </param>
/// <param name="b"> The underlying byte array </param>
/// <param name="sv"> The index of the first value contained in this object within b. </param>
public BitMatrix(GF28Table g, sBox s, byte[] b, int sv)
{
subBox = s;
GFBox = g;
bytes = b;
startValue = sv;
}
/// <summary>
/// Constructs a new BitMatrix with the specified 4 "words".
/// </summary>
/// <param name="g"> The GF(2^8) field being used. </param>
/// <param name="s"> The S-Box being used. </param>
/// <param name="a">The first word. </param>
/// <param name="b"> The second word. </param>
/// <param name="c"> The third word. </param>
/// <param name="d"> THe fourth word. </param>
public BitMatrix(GF28Table g, sBox s, byte[] a, byte[] b, byte[] c, byte[] d)
{
bytes = new byte[SIZE];
if (a.Length != WORD_LENGTH || b.Length != WORD_LENGTH || c.Length != WORD_LENGTH || d.Length != WORD_LENGTH)
{
throw new ArgumentException();
}
Array.Copy(a, 0, bytes, 0, a.Length);
Array.Copy(b, 0, bytes, WORD_LENGTH, b.Length);
Array.Copy(c, 0, bytes, 2 * WORD_LENGTH, c.Length);
Array.Copy(d, 0, bytes, 3 * WORD_LENGTH, d.Length);
startValue = 0;
}