/// <summary>
/// Encodes the polynomial to a byte array writing <c>BITS_PER_INDEX</c> bits for each coefficient
/// </summary>
///
/// <returns>The encoded polynomial</returns>
public byte[] ToBinary()
{
int maxIndex = 1 << BITS_PER_INDEX;
byte[] bin1 = ArrayEncoder.EncodeModQ(m_ones, maxIndex);//13l - (9,2048)
byte[] bin2 = ArrayEncoder.EncodeModQ(m_negOnes, maxIndex);
byte[] bin = ArrayUtils.Concat(ArrayEncoder.ToByteArray(m_ones.Length), ArrayEncoder.ToByteArray(m_negOnes.Length), bin1, bin2);
return(bin);
}
/// <summary>
/// Converts the Private key to an encoded byte array
/// </summary>
///
/// <returns>The encoded NTRUPrivateKey</returns>
public byte[] ToBytes()
{
int flags = (m_sparse ? 1 : 0) + (m_fastFp ? 2 : 0) + (PolyType == TernaryPolynomialType.PRODUCT ? 4 : 0);
byte[] flagsByte = new byte[] { (byte)flags };
byte[] tBin;
if (T.GetType().Equals(typeof(ProductFormPolynomial)))
{
tBin = ((ProductFormPolynomial)T).ToBinary();
}
else
{
tBin = T.ToIntegerPolynomial().ToBinary3Tight();
}
return(ArrayUtils.Concat(ArrayEncoder.ToByteArray(N), ArrayEncoder.ToByteArray(Q), flagsByte, tBin));
}
/// <summary>
/// Converts the Public key to an encoded byte array
/// </summary>
///
/// <returns>The encoded NTRUPublicKey</returns>
public byte[] ToBytes()
{
return(ArrayUtils.Concat(ArrayEncoder.ToByteArray(N), ArrayEncoder.ToByteArray(Q), H.ToBinary(Q)));
}