// версия+информация
private async Task UpdateSelf(string size_str, byte[] signature, IPEndPoint source, string new_version)
{
try
{
window.WriteLine("Client pending: " + size_str);
window.WriteLine("nv: " + new_version);
int size = Convert.ToInt32(size_str);
byte[] buffer = await filetransfering.TcpDataGet(source, size);
byte[] hash = cryptography.GetSHA256Hash(buffer);
window.WriteLine("Client got: " + buffer.Length + " bytes");
TwoBytesArrays temp = new TwoBytesArrays();
temp = ByteArrayCut(buffer, version_size);
string version = string.Empty;
version = BytesToOperation(temp.part1);
window.WriteLine("Version " + version + " ready");
window.WriteLine("Client: " + temp.part1.Length + " + " + temp.part2.Length + " = " + (temp.part1.Length + temp.part2.Length));
window.WriteLine("Siganture: " + cryptography.HashToString(signature));
window.WriteLine("Hash to check: " + cryptography.HashToString(hash));
// hash(version[15] + hash(row_data)[64]);
window.WriteLine("exe hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part2)));
if (cryptography.VerifySign(hash, signature, Information.admin_public_key))
{
window.WriteLine("Update to version: " + version + " started");
update_data = temp.part2;
window.WriteLine("Update to : " + update_data.Length);
window.ShowUpdateAvailable(version, update_data);
}
else
{
window.WriteLine("Wrong signature");
}
}
catch (Exception e)
{
window.WriteLine(e.ToString());
}
}
public bool Self_verify()
{
return(cryptography.VerifySign(signed_hash, signature, admin_public_key));
}
public Transaction ParseTMessage(byte[] data)
{
Transaction result = new Transaction();
try
{
byte[] result_data = new byte[0];
byte[] signature = new byte[0];
string operations = string.Empty;
string tmp = string.Empty;
string[] tmp_list = new string[0];
byte[] body_data = new byte[0];
int info = 0;
int bd_length = 0;
TwoBytesArrays temp = new TwoBytesArrays();
temp = ByteArrayCut(data, Transactions.size_header);
tmp = BytesToOperation(temp.part1);
tmp_list = tmp.Split('|');
result.version = Convert.ToInt32(tmp_list[0]);
bd_length = Convert.ToInt32(tmp_list[1]);
info = Convert.ToInt32(tmp_list[2]);
temp = ByteArrayCut(temp.part2, bd_length); //transaction
signature = temp.part2;
temp = ByteArrayCut(temp.part1, temp.part1.Length - Transactions.size_info_in_transaction);
operations = Encoding.UTF8.GetString(temp.part1);
//Debug.WriteLine("operations[1]: " + cryptography.GetHashString(operations));
//Debug.WriteLine("info[1]: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part2)));
tmp_list = operations.Split('|');
result.input.put = tmp_list[0];
result.input.value = Convert.ToInt32(tmp_list[1]);
result.output.put = tmp_list[2];
result.output.value = Convert.ToInt32(tmp_list[3]);
result.date = Convert.ToInt32(tmp_list[4]);
result.public_key = tmp_list[5];
operations = string.Empty;
operations = result.input.put
+ "|" + result.input.value
+ "|" + result.output.put
+ "|" + result.output.value
+ "|" + result.date
+ "|" + result.public_key;
result.information = ByteArrayGet(temp.part2, info);
temp.part1 = Encoding.UTF8.GetBytes(operations);
temp.part2 = ByteArrayFill(result.information, Transactions.size_info_in_transaction);
body_data = ByteArrayJoin(temp);
//Debug.WriteLine("operations[2]: " + cryptography.GetHashString(operations));
//Debug.WriteLine("info[2]: " + cryptography.HashToString(cryptography.GetSHA256Hash(temp.part2)));
//window.WriteLine("Body hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(body_data)));
//window.WriteLine("Signature hash: " + cryptography.HashToString(cryptography.GetSHA256Hash(signature)));
if (cryptography.VerifySign(body_data, signature, result.public_key))
{
result.signature = signature;
result.name = cryptography.HashToString(cryptography.GetSHA256Hash(data));
}
else
{
window.WriteLine("Transaction checking error");
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.ToString());
}
return(result);
}
