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 btnMaHoa_Click(object sender, EventArgs e1)
{
try
{
using (StreamReader sr = new StreamReader(duongdanfile))
{
string ketqua = "";
int e = Convert.ToInt32(txte.Text);
int N = Convert.ToInt32(txtN.Text);
String line = sr.ReadToEnd();
string textnhapvao = line;
char[] mangchar = line.ToCharArray();
List <int> mangso = new List <int>();
foreach (char c in mangchar)
{
mangso.Add(Convert.ToInt32(c));
}
foreach (int i in mangso)
{
int soketquagiaima = GiaiThuat.MaHoaBaoMatRSA(e, N, i);
char charduocmahoa = (char)soketquagiaima;
ketqua = ketqua + charduocmahoa;
}
txtKetQua.Text = ketqua;
}
}
catch
{
MessageBox.Show("Có lỗi xảy ra");
}
}
private void btnTestGMBM_Click(object sender, EventArgs e)
{
try
{
int C = Convert.ToInt32(txtTestC.Text);
int d = Convert.ToInt32(txtd.Text);
int N = Convert.ToInt32(txtN.Text);
int soketqua = GiaiThuat.GiaiMaChungThucRSA(d, N, C);
txtTestResult.Text = soketqua.ToString();
}
catch
{
MessageBox.Show("Có lỗi xảy ra.");
}
}
private void btnTestMHBM_Click(object sender, EventArgs e1)
{
try
{
int M = Convert.ToInt32(txtTestM.Text);
int e = Convert.ToInt32(txte.Text);
int N = Convert.ToInt32(txtN.Text);
int soketqua = GiaiThuat.MaHoaBaoMatRSA(e, N, M);
txtTestResult.Text = soketqua.ToString();
}
catch
{
MessageBox.Show("Có lỗi xảy ra.");
}
}
private void button4_Click(object sender, EventArgs e)
{
int ketqua = GiaiThuat.GiaiMaChungThucRSA(Convert.ToInt32(txte.Text), Convert.ToInt32(txtN.Text), 27);
MessageBox.Show(ketqua.ToString());
}
