/// <summary>
/// Generate random primes: P and Q
/// </summary>
private void GeneratePQ()
{
do
{
_p = RsaMath.GeneratePrimeNumber(MIN_PRIMES_VALUE, MAX_PRIMES_VALUE);
_q = RsaMath.GeneratePrimeNumber(MIN_PRIMES_VALUE, MAX_PRIMES_VALUE);
} while (_p == _q);
}
/// <summary>
/// Choose public key exponent
/// </summary>
private void ChooseE()
{
E = RsaMath.ChoosePublicKeyExponent(_totient);
}
/// <summary>
/// Calculate Euler's totient function
/// </summary>
private void CalculateTotient()
{
_totient = RsaMath.CalculateEulersTotientFunction(_p, _q);
}
/// <summary>
/// Calculate modulus for public and private keys
/// </summary>
private void CalculateN()
{
N = RsaMath.CalculateModulusForKeys(_p, _q);
}
/// <summary>
/// Decrypt <c>int</c> message
/// </summary>
/// <param name="encryptedMessage">Encrypted message</param>
/// <returns>Decrypted message</returns>
public int DecryptMessage(int encryptedMessage)
{
int decrypted = RsaMath.DecryptMessage(encryptedMessage, D, N);
return(decrypted);
}
/// <summary>
/// Encrypt <c>int</c> message
/// </summary>
/// <param name="message">Input message</param>
/// <returns>Encrypted message</returns>
public int EncryptMessage(int message)
{
int encrypted = RsaMath.EncryptMessage(message, E, N);
return(encrypted);
}
/// <summary>
/// Calculate private key exponent
/// </summary>
private void CalculateD()
{
D = RsaMath.CalculatePrivateKeyExponent(E, _totient);
}
