static public byte[] SetCommandAsn1(int cmd)
{
BERelement asn = new BERelement(0x30);
asn.AddItem(new BERelement(0x02, cmd));
return(asn.GetEncodedPacket());
}
static public byte[] SetCertNameAsn1(byte[] certName)
{
BERelement asn = new BERelement(0x30);
asn.AddItem(new BERelement(0x04, certName));
return(asn.GetEncodedPacket());
}
public static byte[] SetCertASN1(byte[] cert)
{
var mainSeq = new BERelement(0x30);
mainSeq.AddItem(new BERelement(0x0C, cert));
return(mainSeq.GetEncodedPacket());
}
static public byte[] SetSymKeyAndIVAsn1(byte[] data, byte[] iv)
{
BERelement asn = new BERelement(0x30);
asn.AddItem(new BERelement(0x04, data));
asn.AddItem(new BERelement(0x04, iv));
return(asn.GetEncodedPacket());
}
private void button2_Click(object sender, EventArgs e)
{
string plain_text = richTextBox1.Text;
byte[] plain_text_bytes = Encoding.ASCII.GetBytes(plain_text);
Gost3411CryptoServiceProvider hash = new Gost3411CryptoServiceProvider();
byte[] signature = csp.SignData(plain_text_bytes, hash);
BERelement main_seq = new BERelement(0x30);
BERelement sign_seq = new BERelement(0x30);
//sign_seq.AddItem(new BERelement(0x0c, Encoding.UTF8.GetBytes("sign")));
sign_seq.AddItem(new BERelement(0x02, signature));
sign_seq.AddItem(new BERelement(0x02, plain_text_bytes));
main_seq.AddItem(sign_seq);
byte[] test = main_seq.GetEncodedPacket().ToArray();
File.WriteAllBytes("asn2", test);
/*
* BERelement mSeq = BERelement.DecodePacket(test);
* BERelement sSeq = null;
* sSeq = mSeq.Items[0];
* var signed2 = sSeq.Items[0].Value;
* MessageBox.Show(signed2.Length.ToString());
* var msg = sSeq.Items[1].Value;
*/
//send data
try
{
Int32 port = 9595;
TcpClient client = new TcpClient("127.0.0.1", port);
NetworkStream stream = client.GetStream();
stream.Write(mode, 1, 1);
// stream.Write(signature, 0, signature.Length);
//stream.Write(plain_text_bytes, 0, plain_text_bytes.Length);
stream.Write(test, 0, test.Length);
stream.Close();
client.Close();
}
catch (ArgumentNullException exception)
{
MessageBox.Show("ArgumentNullException: " + exception);
}
catch (SocketException exception)
{
MessageBox.Show("SocketException: " + exception);
}
}
public static byte[] SetCertListASN1(X509Certificate2Collection certs)
{
var asnCerts = new BERelement(0x30);
foreach (var name in certs)
{
asnCerts.AddItem(new BERelement(0x0C, name.FriendlyName));
}
return(asnCerts.GetEncodedPacket());
}
static public byte[] CreateSignature(byte[] signature, byte[] sCert, DateTime sTime, byte[] data)
{
BERelement mainSeq = new BERelement(0x30);
BERelement signSeq = new BERelement(0x30);
signSeq.AddItem(new BERelement(0x0C, signature));
signSeq.AddItem(new BERelement(0x0C, sCert));
signSeq.AddItem(new BERelement(0x0c, BitConverter.GetBytes(sTime.ToBinary())));
BERelement fileSeq = new BERelement(0x30);
fileSeq.AddItem(new BERelement(0x0C, data));
mainSeq.AddItem(signSeq);
mainSeq.AddItem(fileSeq);
return(mainSeq.GetEncodedPacket());
}
private void button4_Click(object sender, EventArgs e)
{
if (checkBox2.Checked && !checkBox1.Checked)
{
string plain_text = richTextBox1.Text;
byte[] plain_text_bytes = Encoding.ASCII.GetBytes(plain_text);
Gost3411CryptoServiceProvider hash = new Gost3411CryptoServiceProvider();
byte[] signature = csp.SignData(plain_text_bytes, hash);
BERelement main_seq = new BERelement(0x30);
BERelement sign_seq = new BERelement(0x30);
sign_seq.AddItem(new BERelement(0x0C, cert_name));
sign_seq.AddItem(new BERelement(0x04, signature));
sign_seq.AddItem(new BERelement(0x04, plain_text_bytes));
main_seq.AddItem(sign_seq);
byte[] test = main_seq.GetEncodedPacket().ToArray();
File.WriteAllBytes("signature", test);
try
{
Int32 port = 9595;
TcpClient client = new TcpClient("127.0.0.1", port);
NetworkStream stream = client.GetStream();
stream.Write(mode, 1, 1);
stream.Write(test, 0, test.Length);
stream.Close();
client.Close();
}
catch (ArgumentNullException exception)
{
MessageBox.Show("ArgumentNullException: " + exception);
}
catch (SocketException exception)
{
MessageBox.Show("SocketException: " + exception);
}
}
else if (checkBox1.Checked && !checkBox2.Checked)
{
Gost28147 gost = Gost28147.Create();
Gost3410Parameters public_key = csp.ExportParameters(false);
GostSharedSecretAlgorithm agree_key = csp.CreateAgree(sign.ExportParameters(false));
byte[] wrapped_key = agree_key.Wrap(gost, GostKeyWrapMethod.CryptoProKeyWrap);
BinaryFormatter bf = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
bf.Serialize(ms, public_key);
byte[] public_key_bytes = ms.ToArray();
ms.Close();
MemoryStream memory_stream = new MemoryStream();
CryptoStream cs = new CryptoStream(memory_stream, gost.CreateEncryptor(), CryptoStreamMode.Write);
string plain_text = richTextBox1.Text;
byte[] plain_text_bytes = Encoding.ASCII.GetBytes(plain_text);
cs.Write(plain_text_bytes, 0, plain_text_bytes.Length);
cs.FlushFinalBlock();
byte[] cipher_text_bytes = memory_stream.ToArray();
memory_stream.Close();
cs.Close();
BERelement main_seq = new BERelement(0x30);
BERelement sign_seq = new BERelement(0x30);
sign_seq.AddItem(new BERelement(0x0C, cert_name));
sign_seq.AddItem(new BERelement(0x04, wrapped_key));
sign_seq.AddItem(new BERelement(0x04, gost.IV));
sign_seq.AddItem(new BERelement(0x04, public_key_bytes));
sign_seq.AddItem(new BERelement(0x04, cipher_text_bytes));
main_seq.AddItem(sign_seq);
byte[] test = main_seq.GetEncodedPacket().ToArray();
File.WriteAllBytes("encryption", test);
try
{
Int32 port = 9595;
TcpClient client = new TcpClient("127.0.0.1", port);
NetworkStream stream = client.GetStream();
stream.Write(mode, 0, 1);
stream.Write(test, 0, test.Length);
stream.Close();
client.Close();
}
catch (ArgumentNullException exception)
{
MessageBox.Show("ArgumentNullException: " + exception);
}
catch (SocketException exception)
{
MessageBox.Show("SocketException: " + exception);
}
}
else if (checkBox2.Checked && checkBox1.Checked)
{
MessageBox.Show("suka!");
string plain_text = richTextBox1.Text;
byte[] plain_text_bytes = Encoding.ASCII.GetBytes(plain_text);
Gost3411CryptoServiceProvider hash = new Gost3411CryptoServiceProvider();
byte[] signature = csp.SignData(plain_text_bytes, hash);
BERelement main_seq = new BERelement(0x30);
BERelement sign_seq = new BERelement(0x30);
sign_seq.AddItem(new BERelement(0x0C, cert_name));
sign_seq.AddItem(new BERelement(0x04, signature));
sign_seq.AddItem(new BERelement(0x04, plain_text_bytes));
main_seq.AddItem(sign_seq);
byte[] test = main_seq.GetEncodedPacket().ToArray();
File.WriteAllBytes("signature_and_encryption", test);
Gost28147 gost = Gost28147.Create();
Gost3410Parameters public_key = csp.ExportParameters(false);
GostSharedSecretAlgorithm agree_key = csp.CreateAgree(sign.ExportParameters(false));
byte[] wrapped_key = agree_key.Wrap(gost, GostKeyWrapMethod.CryptoProKeyWrap);
BinaryFormatter bf = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
bf.Serialize(ms, public_key);
byte[] public_key_bytes = ms.ToArray();
ms.Close();
MemoryStream memory_stream = new MemoryStream();
CryptoStream cs = new CryptoStream(memory_stream, gost.CreateEncryptor(), CryptoStreamMode.Write);
//string plain_text = richTextBox1.Text;
//byte[] plain_text_bytes = Encoding.ASCII.GetBytes(plain_text);
byte[] plain_text_bytes2 = test;
cs.Write(plain_text_bytes2, 0, plain_text_bytes2.Length);
cs.FlushFinalBlock();
byte[] cipher_text_bytes2 = memory_stream.ToArray();
memory_stream.Close();
cs.Close();
BERelement main_seq2 = new BERelement(0x30);
BERelement sign_seq2 = new BERelement(0x30);
sign_seq2.AddItem(new BERelement(0x0C, cert_name));
sign_seq2.AddItem(new BERelement(0x04, wrapped_key));
sign_seq2.AddItem(new BERelement(0x04, gost.IV));
sign_seq2.AddItem(new BERelement(0x04, public_key_bytes));
sign_seq2.AddItem(new BERelement(0x04, cipher_text_bytes2));
main_seq2.AddItem(sign_seq2);
byte[] test2 = main_seq2.GetEncodedPacket().ToArray();
try
{
Int32 port = 9595;
TcpClient client = new TcpClient("127.0.0.1", port);
NetworkStream stream = client.GetStream();
stream.Write(mode, 2, 1);
stream.Write(test2, 0, test2.Length);
stream.Close();
client.Close();
}
catch (ArgumentNullException exception)
{
MessageBox.Show("ArgumentNullException: " + exception);
}
catch (SocketException exception)
{
MessageBox.Show("SocketException: " + exception);
}
}
}
private void button1_Click(object sender, EventArgs e)
{
Gost28147 gost = Gost28147.Create();
Gost3410Parameters public_key = csp.ExportParameters(false);
GostSharedSecretAlgorithm agree_key = csp.CreateAgree(sign.ExportParameters(false));
byte[] wrapped_key = agree_key.Wrap(gost, GostKeyWrapMethod.CryptoProKeyWrap);
BinaryFormatter bf = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
bf.Serialize(ms, public_key);
byte[] public_key_bytes = ms.ToArray();
ms.Close();
MemoryStream memory_stream = new MemoryStream();
CryptoStream cs = new CryptoStream(memory_stream, gost.CreateEncryptor(), CryptoStreamMode.Write);
string plain_text = richTextBox1.Text;
byte[] plain_text_bytes = Encoding.ASCII.GetBytes(plain_text);
cs.Write(plain_text_bytes, 0, plain_text_bytes.Length);
cs.FlushFinalBlock();
byte[] cipher_text_bytes = memory_stream.ToArray();
memory_stream.Close();
cs.Close();
BERelement main_seq = new BERelement(0x30);
BERelement sign_seq = new BERelement(0x30);
sign_seq.AddItem(new BERelement(0x02, wrapped_key));
sign_seq.AddItem(new BERelement(0x02, gost.IV));
sign_seq.AddItem(new BERelement(0x02, public_key_bytes));
sign_seq.AddItem(new BERelement(0x02, cipher_text_bytes));
main_seq.AddItem(sign_seq);
byte[] test = main_seq.GetEncodedPacket().ToArray();
//File.WriteAllBytes("asn1", test);
/*
* sign_seq.AddItem(new BERelement(0x02, signature));
* sign_seq.AddItem(new BERelement(0x02, plain_text_bytes));
*
* main_seq.AddItem(sign_seq);
* byte[] test = main_seq.GetEncodedPacket().ToArray();
*/
//send data
try
{
Int32 port = 9595;
TcpClient client = new TcpClient("127.0.0.1", port);
NetworkStream stream = client.GetStream();
stream.Write(mode, 0, 1);
stream.Write(test, 0, test.Length);
//stream.Write(wrapped_key, 0, wrapped_key.Length);
//stream.Write(gost.IV, 0, gost.IV.Length);
//stream.Write(public_key_bytes, 0, public_key_bytes.Length);
//stream.Write(cipher_text_bytes, 0, cipher_text_bytes.Length);
stream.Close();
client.Close();
}
catch (ArgumentNullException exception)
{
MessageBox.Show("ArgumentNullException: " + exception);
}
catch (SocketException exception)
{
MessageBox.Show("SocketException: " + exception);
}
}