private void button2_Click(object sender, EventArgs e)
{
this.textBox6.Text = "";
ulong G = Convert.ToUInt64(this.textBox3.Text);
ulong P = Convert.ToUInt64(this.textBox2.Text);
ulong Y = Convert.ToUInt64(this.textBox1.Text);
ElGamal ElG = new ElGamal(G, P, Y, true);
ElG.k = ElG.GetK();
ElG.a = ElG.GetFirstCypherPart();
ulong[] code = Coding.Encoding(this.textBox4.Text);
ulong[] cypher = ElG.Encription(code);
ulong[] fullCypher = new ulong[cypher.Length + 1];
fullCypher[0] = ElG.a;
int fullCypherLength = fullCypher.Length;
for (int i = 1; i < fullCypherLength; ++i)
{
fullCypher[i] = cypher[i - 1];
}
this.textBox5.Text = ElG.a.ToString();
for (int i = 0; i < fullCypherLength; ++i)
{
this.textBox6.Text += fullCypher[i].ToString();
}
frm3.Cypher = fullCypher;
}
private void button3_Click(object sender, EventArgs e)
{
ulong P = Convert.ToUInt64(this.textBox1.Text);
ulong G = Convert.ToUInt64(this.textBox2.Text);
ulong X = Convert.ToUInt64(this.textBox3.Text);
bool Is_p_prime = IsPrime.Check(P);
bool Is_g_lesser_p = G < P;
bool Is_x_lesser_p = X < P;
if (!Is_p_prime || !Is_g_lesser_p || !Is_x_lesser_p)
{
if (!Is_p_prime)
{
MessageBox.Show("Число P не простое", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (!Is_g_lesser_p)
{
MessageBox.Show("Число G больше P", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (!Is_x_lesser_p)
{
MessageBox.Show("Число X больше P", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
ElGamal ElG = new ElGamal(P, G, X);
this.textBox4.Text = G.ToString();
this.textBox5.Text = P.ToString();
this.textBox6.Text = ElG.GetOpenKey().ToString();
}
}
private void button1_Click(object sender, EventArgs e)
{
bool Is_p_prime = IsPrime.Check(P);
bool Is_g_lesser_p = G < P;
bool Is_x_lesser_p = X < P;
if (!Is_p_prime || !Is_g_lesser_p || !Is_x_lesser_p)
{
if (!Is_p_prime)
{
MessageBox.Show("Число P не простое", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (!Is_g_lesser_p)
{
MessageBox.Show("Число G больше P", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
if (!Is_x_lesser_p)
{
MessageBox.Show("Число X больше P", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
ElGamal elG = new ElGamal(P, G, X);
OpenKey = elG.GetOpenKey();
}
}
private void button2_Click(object sender, EventArgs e)
{
ulong P = Convert.ToUInt64(this.textBox1.Text);
ulong G = Convert.ToUInt64(this.textBox2.Text);
ulong X = Convert.ToUInt64(this.textBox3.Text);
ElGamal ElG = new ElGamal(P, G, X);
ElG.a = Cypher[0];
int CypherLength = Cypher.Length - 1;
ulong[] cypher = new ulong[CypherLength];
for (int i = 0; i < CypherLength; ++i)
{
cypher[i] = Cypher[i + 1];
}
ulong[] decypher = ElG.Decryption(cypher);
this.textBox8.Text = Coding.Decoding(decypher);
}
private void button2_Click(object sender, EventArgs e)
{
ElGamal elG = new ElGamal(P, G, X);
ulong K = elG.GetK();
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P);
ulong a = ExpByModule.Exponentiation(G, K, P);
ulong reverseK = ExtendedEuclid.FindReverse(K, P - 1);
ulong b;
for (ulong i = 1; ; ++i)
{
if (hash == ((X * a + i * K) % (P - 1)))
{
b = i;
break;
}
}
ulong[] sign = new ulong[2];
sign[0] = a;
sign[1] = b;
Signature = sign;
}
