private static IList <Zp> GenerateG_i_yPolynomial(ZpMatrix f_x_y,
Zp secret, int playerNum)
{
int w = NumTheoryUtils.GetFieldMinimumPrimitive(secret.Prime);
int w_i = NumTheoryUtils.ModPow(w, playerNum, secret.Prime);
var x_values = new Zp[f_x_y.RowCount];
for (int i = 0; i < f_x_y.RowCount; i++)
{
x_values[i] = new Zp(secret.Prime, NumTheoryUtils.ModPow(w_i, i, secret.Prime));
}
var tempArr = f_x_y.Times(new ZpMatrix(x_values, VectorType.Column)).ZpVector;
return(tempArr);
}
//public override void loadFromByteArrayNoHeader(BitStream bs, int prime)
//{
// if (bs.readBoolean())
// fi_x = bs.readList(prime);
// if (bs.readBoolean())
// gi_y = bs.readList(prime);
//}
//public override void writeToBitStreamNoHeader(BitStream bs)
//{
// bs.writeBoolean(fi_x != null);
// if (fi_x != null)
// bs.writeList(fi_x);
// bs.writeBoolean(gi_y != null);
// if (gi_y != null)
// bs.writeList(gi_y);
//}
//public override byte[] writeToByteArray()
//{
// var bs = new BitStream();
// bs.writeMessageType(MessageType.ZP_LISTS);
// writeToBitStreamNoHeader(bs);
// bs.close();
// return bs.ByteArray;
//}
public virtual IList <Zp> CalculateF_i_xValuesForPlayers(int numOfPlayers, int prime)
{
int w_i, w = NumTheoryUtils.GetFieldMinimumPrimitive(prime);
int value;
var f_i_xValues = new List <Zp>();
for (int playerNum = 0; playerNum < numOfPlayers; playerNum++)
{
w_i = NumTheoryUtils.ModPow(w, playerNum, prime);
value = 0;
for (int j = 0; j < fi_x.Count; j++)
{
value += NumTheoryUtils.ModPow(w_i, j, prime) * fi_x[j].Value;
}
f_i_xValues.Add(new Zp(prime, value));
}
return(f_i_xValues);
}
