private static void CheckLicense(object o = null)
{
try
{
const string pubKeyNotXoRed =
"<RSAKeyValue><Modulus>wzzpNEbNjAWLI3AgFLb0YZ8gjqqmIgD1rTU3xy25IuetNsA5QKJxP7whwKq2LF4ul56LhxG3M3Wxhr/kZOgXWbPjEG1zyB7Lx83B65z6CFRIV5llzZziq6/uZP2cEHfwF62/letOD+tUaVvsi4/jvVv5NEanfeoXIQ1cbSBuWaEXfNpra48lmAZpTSLu93l9o+ooJsyrwBBHwWrS3/ljE/19PF4SetqNvUi7FpsrtB5emsG26M7AYiEv/lN2oJlOMU4+yJa/na+LZEdjSsG7yUiSTu2r23ixQlfKbGLwCDtP3VLgf2wrptq7KCIaYrQIznl/kON7CeHT10kKvcjAPQ==</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";
var curRandom = new Random();
var preKey = RandomStringWithNumbers(curRandom.Next(15, 21), curRandom);
var xoRkey = curRandom.Next(1, int.MaxValue);
var pubKey = DigitalSign.Xor(pubKeyNotXoRed, xoRkey);
var token = curRandom.Next(1000000, int.MaxValue);
var infoXoRed = DigitalSign.Xor(Info(token, preKey), xoRkey);
var responseXoRed =
DigitalSign.Xor(
GetRequest(DigitalSign.Xor(infoXoRed, xoRkey)), xoRkey);
var responseSplitted = DigitalSign.Xor(responseXoRed, xoRkey)
.Split(new[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
if (responseSplitted[0].Split('=')[1] == "1")
{
if (int.Parse(DigitalSign.DecryptString(responseSplitted[4], preKey)) != token)
{
return;
}
if (_hwid != Encoding.UTF8.GetString(
Convert.FromBase64String(
responseSplitted[1].Split(new[] { '[', ']' },
StringSplitOptions.RemoveEmptyEntries)[0])))
{
return;
}
if (!DigitalSign.CompareRsaMethod(GetSignedText(responseSplitted),
responseSplitted[responseSplitted.Length - 1].Split(new[] { '[', ']' },
StringSplitOptions.RemoveEmptyEntries)[0], DigitalSign.Xor(pubKey, xoRkey)))
{
return;
}
var currentTime = DateTime.Parse(responseSplitted[2].Split('=')[1]);
var endTime = DateTime.Parse(responseSplitted[3].Split('=')[1]);
var activatedTime = endTime.Subtract(currentTime);
var timeOffset = currentTime.Subtract(DateTime.Now);
_dt = endTime - timeOffset;
_lic = activatedTime >= TimeSpan.Zero;
}
else
{
Register("");
}
}
catch (Exception e)
{
if (!_lic)
{
MessageBox.Show(@"Не удается связвться с сервером авторизации");
Process.GetCurrentProcess().Kill();
}
}
}
private static string Info(int token1, string preKey)
{
string tokenString = $"token={DigitalSign.EncryptString(token1.ToString(), preKey)}&key={_hwid}";
return(tokenString);
}