private void button4_Click(object sender, EventArgs e)
{
Random rnd = new Random();
MyRSA.prim1 = MyRSA.generator.GetSequence().ElementAt(rnd.Next(1000, 10000));
MyRSA.prim2 = MyRSA.generator.GetSequence().ElementAt(rnd.Next(1000, 10000));
int temp_fi = 0;
temp_fi = Convert.ToInt32(MyRSA.fi / 2); //se poate afla eroare pe linia acesta dar numai daca prim1 sau prim2 iese prea mare la generare rnd
int rndint = rnd.Next(1, temp_fi);
long element = rndint * 2;
MyRSA mr = new MyRSA();
mr.GCDRecursive(element, MyRSA.fi);
EuclidExtended ee = new EuclidExtended(1, MyRSA.fi);
EuclidExtendedSolution result = ee.calculate();
long d = Convert.ToInt64(result.D);
MessageBox.Show("the public key: " + mr.generatePublicKey(MyRSA.n, element).ToString());
MessageBox.Show("the private key: " + mr.generatePrivateKey(d).ToString());
listBox1.Items.Add(" ");
listBox1.Items.Add("Textul criptat:");
for (int i = 0; i < count; i++)
{
mr.Encrypt(elements[i], d);
long c1 = long.Parse(mr.Encrypt(elements[i], d));
}
}
private void button5_Click(object sender, EventArgs e)
{
Random rnd = new Random();
MyRSA.prim1 = MyRSA.generator.GetSequence().ElementAt(rnd.Next(1000, 10000));
MyRSA.prim2 = MyRSA.generator.GetSequence().ElementAt(rnd.Next(1000, 10000));
int temp_fi = 0;
temp_fi = Convert.ToInt32(MyRSA.fi / 2);
int rndint = rnd.Next(1, temp_fi);
long element = rndint * 2;
MyRSA mr = new MyRSA();
mr.GCDRecursive(element, MyRSA.fi);
EuclidExtended ee = new EuclidExtended(1, MyRSA.fi);
EuclidExtendedSolution result = ee.calculate();
long d = Convert.ToInt64(result.D);
listBox1.Items.Add(" ");
listBox1.Items.Add("Textul decriptat:");
for (int i = 0; i < count; i++)
{
long c1 = long.Parse(mr.Encrypt(elements[i], d));
mr.Decrypt(elements[i], c1, d);
}
}
public long generatePublicKey(long n, long el)
{
rnd = new Random();
int temp_fi = 0; //avem nevoie de un nr mai mic decat fi ca sa putem crea un random nr intre (1,fi)
//am incercat sa rezolv eroarea OverflowException care apare uneori aici:
do
{
try
{
temp_fi = Convert.ToInt32(fi / 2);
}
catch (Exception)
{
fi--;
}
} while (temp_fi != Convert.ToInt32(fi / 2));
int rndint = rnd.Next(1, temp_fi);
el = rndint * 2;
MyRSA hm = new MyRSA();
hm.GCDRecursive(el, fi);
return(hm.GCDRecursive(el, fi));
// MessageBox.Show(" public key: " + hm.GCDRecursive(el, fi).ToString() + n.ToString()+el.ToString());
}
