/// <summary>
/// Calculates client's S.
/// </summary>
/// <param name="N"></param>
/// <param name="g"></param>
/// <param name="B"></param>
/// <param name="k"></param>
/// <param name="x"></param>
/// <param name="a"></param>
/// <param name="u"></param>
/// <returns></returns>
public static NetBigInteger CalcSClient(NetBigInteger N, NetBigInteger g, NetBigInteger B, NetBigInteger k, NetBigInteger x, NetBigInteger a, NetBigInteger u)
{
// <premaster secret> = (B - (k * g^x)) ^ (a + (u * x)) % N
// (B + (N - ((k*g.ModExp(x,N))%N))) - Do it this way. Thanks Valery.
NetBigInteger S = (B.Add(N.Subtract((k.Multiply(g.ModPow(x, N))).Mod(N)))).ModPow(a.Add(u.Multiply(x)), N);
return(S);
}
public NetBigInteger Add(
NetBigInteger value)
{
if (m_sign == 0)
return value;
if (m_sign != value.m_sign)
{
if (value.m_sign == 0)
return this;
if (value.m_sign < 0)
return Subtract(value.Negate());
return value.Subtract(Negate());
}
return AddToMagnitude(value.m_magnitude);
}
/// <summary>
/// Calculates client's S.
/// </summary>
/// <param name="N"></param>
/// <param name="g"></param>
/// <param name="B"></param>
/// <param name="k"></param>
/// <param name="x"></param>
/// <param name="a"></param>
/// <param name="u"></param>
/// <returns></returns>
public static NetBigInteger CalcSClient(NetBigInteger N, NetBigInteger g, NetBigInteger B, NetBigInteger k, NetBigInteger x, NetBigInteger a, NetBigInteger u)
{
// <premaster secret> = (B - (k * g^x)) ^ (a + (u * x)) % N
// (B + (N - ((k*g.ModExp(x,N))%N))) - Do it this way. Thanks Valery.
NetBigInteger S = (B.Add(N.Subtract((k.Multiply(g.ModPow(x, N))).Mod(N)))).ModPow(a.Add(u.Multiply(x)), N);
return S;
}