private void decryptBtn_Click(object sender, EventArgs e)
{
if (encryptTxt.Text == string.Empty)
{
MessageBox.Show("There's nothing to decrypt !");
}
else if (nTxt.Text == string.Empty)
{
MessageBox.Show("No value N inserted !");
}
else if (eTxt.Text == string.Empty)
{
MessageBox.Show("No value E inserted !");
}
else
{
string[] decText = (encryptTxt.Text).Split(' ');
BigInteger[] encText = new BigInteger[decText.Length];
for (int i = 0; i < decText.Length; i++)
{
BigInteger temp = 0;
if (BigInteger.TryParse(decText[i], out temp))
{
if (temp != 0)
{
encText[i] = BigInteger.Parse(decText[i]);
}
}
}
BigInteger n = BigInteger.Parse(nTxt.Text);
BigInteger ex = BigInteger.Parse(eTxt.Text); // Pervadinta į ex nes maišosi su EventArgs e
RSA_Algorithm rsaA = new RSA_Algorithm();
rsaA.rsaDecryption(encText, n, ex);
decryptedTxt.Text = rsaA.Decryption();
}
}
private void encryptBtn_Click(object sender, EventArgs e)
{
if (pTxt.Text == string.Empty || qTxt.Text == string.Empty)
{
MessageBox.Show("P, Q, can't be empty !");
}
else
{
BigInteger p = BigInteger.Parse(pTxt.Text);
BigInteger q = BigInteger.Parse(qTxt.Text);
if (encryptTxt.Text == string.Empty)
{
MessageBox.Show("There's no text to encrypt !");
}
else if (p == q)
{
MessageBox.Show("Prime numbers cannot have same value !");
}
else if (HelperMethods.checkPrime(p) != true)
{
MessageBox.Show("P must be prime number!");
}
else if (HelperMethods.checkPrime(q) != true)
{
MessageBox.Show("Q must be prime number!");
}
else
{
RSA_Algorithm rsaA = new RSA_Algorithm();
rsaA.rsaEncryption(encryptTxt.Text, p, q);
encryptedTxt.Text = rsaA.Encryption();
//(encryptTxt.Text, p, q);
}
}
}
