private void button2_Click(object sender, EventArgs e)
{
this.textBox7.Text = "";
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P) % Q;
if (0 == hash)
{
hash = 1;
}
Random rand = new Random();
ulong K = (ulong)rand.Next(0, (int)Q);
ulong[] sign = new ulong[2];
sign[0] = ExpByModule.Exponentiation(A, K, P) % Q;
sign[1] = (SecretKey * sign[0] + K * hash) % Q;
if (0 == sign[0])
{
bool check = true;
while (check)
{
K = (ulong)rand.Next(0, (int)Q);
sign[0] = ExpByModule.Exponentiation(A, K, P) % Q;
sign[1] = (SecretKey * sign[0] + K * hash) % Q;
if (0 != sign[0])
{
check = false;
}
}
}
Signature = sign;
}
private void button2_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(this.textBox5.Text);
ulong hash = Hash.GetHash(CodedText, Convert.ToUInt64(this.textBox3.Text), Convert.ToUInt64(this.textBox1.Text) * Convert.ToUInt64(this.textBox2.Text));
this.textBox6.Text = ExpByModule.Exponentiation(hash, Convert.ToUInt64(this.textBox4.Text), Convert.ToUInt64(this.textBox1.Text) * Convert.ToUInt64(this.textBox2.Text)).ToString();
}
private void hideMessage_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, Module);
ulong[] RandomStorage;
List <ulong> Random = new List <ulong>();
string StringRandomRange = "1";
int EilerLength = Module.ToString().Length;
for (int i = 0; i < EilerLength / 2; ++i)
{
StringRandomRange += "0";
}
ulong RandomRange = Module - Convert.ToUInt64(StringRandomRange);
for (ulong i = RandomRange; i < Module; ++i)
{
if (1 == Euclid.FindGSD(i, Module))
{
Random.Add(i);
}
}
RandomStorage = Random.ToArray();
Random rand = new Random();
ulong k = RandomStorage[rand.Next(0, RandomStorage.Length)];
reverseK = ExtendedEuclid.FindReverse(k, Module);
HidedMessage = (hash * ExpByModule.Exponentiation(k, OpenKey, Module)) % Module;
}
private void button1_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P) % Q;
if (0 == hash)
{
hash = 1;
}
ulong v = ExpByModule.Exponentiation(hash, Q - 2, Q);
ulong z1 = (Signature[1] * (v % Q)) % Q;
ulong z2 = (((Q - Signature[0]) % Q) * v) % Q;
ulong u = ((ExpByModule.Exponentiation(A, z1, P) * ExpByModule.Exponentiation(OpenKey, z2, P)) % P) % Q;
this.textBox7.Text = u.ToString();
this.textBox8.Text = Signature[0].ToString();
if (u == Signature[0])
{
this.label9.Text = "Цифровая подпись действительна";
}
else
{
this.label9.Text = "Цифровая подпись не действительна";
}
}
public ulong[] Decription(ulong[] CypherText, ulong module)
{
int CypherTextLength = CypherText.Length;
ulong[] OpenText = new ulong[CypherTextLength];
for (int i = 0; i < CypherTextLength; ++i)
{
OpenText[i] = ExpByModule.Exponentiation(CypherText[i], Secret, module);
}
return(OpenText);
}
public static ulong GetHash(ulong[] Text, ulong Key, ulong Module)
{
int TextLength = Text.Length;
ulong Hash = 0;
for (int i = 0; i < TextLength; ++i)
{
Hash = (Hash ^ ExpByModule.Exponentiation(Text[i], Key, Module)) % Module;
}
return(Hash);
}
public ulong[] Encription(ulong[] CodedLine, ulong module)
{
int CodedLineLength = CodedLine.Length;
ulong[] CypherText = new ulong[CodedLineLength];
for (int i = 0; i < CodedLineLength; ++i)
{
CypherText[i] = ExpByModule.Exponentiation(CodedLine[i], Open, module);
}
return(CypherText);
}
private void button2_Click(object sender, EventArgs e)
{
this.textBox6.Text = ExpByModule.Exponentiation(Convert.ToUInt64(this.textBox4.Text), Convert.ToUInt64(this.textBox1.Text), Convert.ToUInt64(this.textBox2.Text)).ToString();
if (this.textBox6.Text == this.textBox5.Text)
{
this.label8.Text = "Цифровая подпись действительна";
}
else
{
this.label8.Text = "Цифровая подпись не действительна";
}
}
public ulong[] Encription(ulong[] CodedLine)
{
int CodedLineLength = CodedLine.Length;
ulong[] CypherText = new ulong[CodedLineLength];
ulong Y = ExpByModule.Exponentiation(y, k, p);
for (int i = 0; i < CodedLineLength; ++i)
{
CypherText[i] = (CodedLine[i] * Y) % p;
}
return(CypherText);
}
public ulong[] Decryption(ulong[] CypherText)
{
int CypherTextLength = CypherText.Length;
ulong[] OpenText = new ulong[CypherTextLength];
ulong reverse_a = ExpByModule.Exponentiation(a, p - 1 - x, p);
for (int i = 0; i < CypherTextLength; ++i)
{
OpenText[i] = (CypherText[i] * reverse_a) % p;
}
return(OpenText);
}
private void button1_Click(object sender, EventArgs e)
{
ulong[] CodedText = Coding.Encoding(Message);
ulong hash = Hash.GetHash(CodedText, OpenKey, P);
FirstVerification = ExpByModule.Exponentiation(G, hash, P).ToString();
SecondVerification = ((ExpByModule.Exponentiation(OpenKey, Signature[0], P) * ExpByModule.Exponentiation(Signature[0], Signature[1], P)) % P).ToString();
if (FirstVerification == SecondVerification)
{
this.label9.Text = "Цифровая подпись действительна";
}
else
{
this.label9.Text = "Цифровая подпись не действительна";
}
}
private void button1_Click(object sender, EventArgs e)
{
bool Is_p_prime = IsPrime.Check(P);
if (!Is_p_prime)
{
if (!Is_p_prime)
{
MessageBox.Show("Число P не простое", "Ошибка ввода", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
else
{
ulong[] RandomStorage;
List <ulong> Random = new List <ulong>();
for (ulong i = 3; i < P / 2; ++i)
{
if (0 == (P - 1) % i && IsPrime.Check(i))
{
Random.Add(i);
}
}
RandomStorage = Random.ToArray();
Random rand = new Random();
Q = RandomStorage[rand.Next(0, RandomStorage.Length)];
ulong[] RandomStorage2;
List <ulong> Random2 = new List <ulong>();
for (ulong i = 1; i < P - 1; ++i)
{
if (1 == ExpByModule.Exponentiation(i, Q, P))
{
Random2.Add(i);
}
}
RandomStorage2 = Random2.ToArray();
Random rand2 = new Random();
A = RandomStorage2[rand2.Next(0, RandomStorage2.Length)];
Random rand3 = new Random();
SecretKey = (ulong)rand3.Next(1, (int)Q - 1);
OpenKey = ExpByModule.Exponentiation(A, SecretKey, P);
}
}
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;
}
private void getSignature_Click(object sender, EventArgs e)
{
Signature = ExpByModule.Exponentiation(HidedMessage, SecretKey, P * Q);
}
public ulong GetFirstCypherPart()
{
a = ExpByModule.Exponentiation(g, k, p);
return(a);
}
public ulong GetOpenKey()
{
y = ExpByModule.Exponentiation(g, x, p);
return(y);
}
private void getKey_Click(object sender, EventArgs e)
{
Key = ExpByModule.Exponentiation(RecievedMessage, X, P);
}
private void calculateSendedMessage_Click(object sender, EventArgs e)
{
SendedMessage = ExpByModule.Exponentiation(A, X, P);
}
private void getKey_Click(object sender, EventArgs e)
{
Key = (ExpByModule.Exponentiation(RecievedMessage, B, P) * ExpByModule.Exponentiation(RecievedZ, Y, P)) % P;
}
