public static int GiaiMaRSA(int p, int q, int C)
{
Khoa khoacongkhai = new Khoa();
Khoa khoabimat = new Khoa();
int N = p * q;
int n = (p - 1) * (q - 1);
int e = 0;
for (int i = 2; i < n; i++)
{
SoKetQua kq = GiaiThuat.TinhEuclid(i, n);
if (kq.Ucln == 1)
{
e = i;
break;
}
}
int d = GiaiThuat.TinhEuclid(n, e).Nghichdao;
khoacongkhai.So1 = e;
khoacongkhai.So2 = N;
khoabimat.So1 = d;
khoabimat.So2 = N;
int Mngang = binhphuonglientiep(C, d, N);
return(Mngang);
}
private void button1_Click(object sender, EventArgs e1)
{
try
{
int p = Convert.ToInt32(txtp.Text);
int q = Convert.ToInt32(txtq.Text);
Khoa khoacongkhai = new Khoa();
Khoa khoabimat = new Khoa();
int N = p * q;
int n = (p - 1) * (q - 1);
int e = 0;
for (int i = 2; i < n; i++)
{
SoKetQua kq = GiaiThuat.TinhEuclid(i, n);
if (kq.Ucln == 1)
{
e = i;
break;
}
else
{
continue;
}
}
int d = GiaiThuat.TinhEuclid(n, e).Nghichdao;
txte.Text = e.ToString();
txtN.Text = N.ToString();
txtd.Text = d.ToString();
txtN2.Text = N.ToString();
}
catch
{
MessageBox.Show("Có lỗi xảy ra");
}
}
private void button1_Click(object sender, EventArgs e)
{
try
{
SoKetQua a = TinhEuclid(Convert.ToInt32(textBox1.Text), Convert.ToInt32(textBox2.Text));
textBox3.Text = a.Ucln.ToString();
textBox4.Text = a.Nghichdao.ToString();
}
catch
{
MessageBox.Show("Có lỗi ");
}
}
public static SoKetQua TinhEuclid(int a, int b)
{
SoKetQua kq = new SoKetQua();
int A1 = 1;
int A2 = 0;
int A3 = a;
int B1 = 0;
int B2 = 1;
int B3 = b;
int Q = 0;
int R1 = 0;
int R2 = 0;
int R3 = 0;
while (B3 != 0 && B3 != 1)
{
Q = A3 / B3;
R1 = A1 - (Q * B1);
R2 = A2 - (Q * B2);
R3 = A3 - (Q * B3);
A1 = B1;
A2 = B2;
A3 = B3;
B1 = R1;
B2 = R2;
B3 = R3;
}
if (B3 == 0)
{
kq.Ucln = A3;
kq.Nghichdao = 0;
return(kq);
}
else
{
kq.Ucln = 1;
if (B2 < 0)
{
kq.Nghichdao = B2 + a;
}
else
{
kq.Nghichdao = B2;
}
return(kq);
}
}