public int DecryptC1C2()
{
int key = ModuloBase.Power(C1, C2, q);
Console.WriteLine("Key : " + key);
int Mdecrypt = (C2 * EulerMethod.ModuloInverse(key, q)) % q;
return(Mdecrypt);
}
// k=log,a,(b) mod n
public static int LogarithmRoiRac(int a, int b, int n)
{
for (int i = 1; i < n; i++)
{
if (b == ModuloBase.Power(a, i, n))
{
return(i);
}
}
return(-1);
}
public static int Power(int a, int b, int n)
{
int b1;
if (PrimitiveRoot.IsPrime(n) && a > 0)
{
b1 = b % (n - 1);
return(ModuloBase.Power(a, b1, n));
}
return(-1);
}
public static bool isCanNguyenThuy(int a, int n)
{
int phiN = EulerMethod.phi(n);
if (1 == ModuloBase.Power(a, phiN, n))
{
for (int i = 1; i < phiN; i++)
{
if (phiN % i == 0)
{
if (1 == ModuloBase.Power(a, i, n))
{
return(false);
}
}
}
return(true);
}
return(false);
}
public int ADecryptC(int C)
{
return(ModuloBase.Power(C, d, n));
}
public int BEncryptM(int M)
{
return(ModuloBase.Power(M, e, n));
}