private void gen_key_rsa_sign_Click(object sender, EventArgs e)
{
int keysize = Convert.ToInt32(key_size_rsa_sign.SelectedItem.ToString());
ArrayList getkeys = rsa_keys.generate_keys(keysize);
BigInteger[] keys = new BigInteger[6];
int j = 0;
foreach (BigInteger i in getkeys)
{
keys[j++] = i;
}
P_RSA = keys[0];
Q_RSA = keys[1];
N = keys[2];
PHI_N = keys[3];
PK_RSA = keys[4];
SK_RSA = keys[5];
p_rsa_sign.Text = P_RSA.ToString();
q_rsa_sign.Text = Q_RSA.ToString();
n_rsa_sign.Text = N.ToString();
phin_rsa_sign.Text = PHI_N.ToString();
pk_rsa_sign.Text = PK_RSA.ToString();
sk_rsa_sign.Text = SK_RSA.ToString();
rsa_signature = new RSASignature(PK_RSA, N, PHI_N, SK_RSA, size_rsa_sign);
}
private void file_key_rsa_sign_Click(object sender, EventArgs e)
{
OpenFileDialog get_file = new OpenFileDialog();
string file_name = "";
if (get_file.ShowDialog() == DialogResult.OK)
{
file_name = get_file.FileName;
}
string[] keys = new string[6];
try
{
using (StreamReader sr = new StreamReader(file_name))
{
string line;
int count = 0;
while ((line = sr.ReadLine()) != null)
{
keys[count++] = line;
}
if (keys[3].Length <= 320)
{
key_size_rsa_sign.Text = 1024.ToString();
size_rsa_sign = 1024;
}
else
{
key_size_rsa_sign.Text = 2048.ToString();
size_rsa_sign = 2048;
}
P_RSA = BigInteger.Parse(keys[0]);
Q_RSA = BigInteger.Parse(keys[1]);
N = BigInteger.Parse(keys[2]);
PHI_N = BigInteger.Parse(keys[3]);
PK_RSA = BigInteger.Parse(keys[4]);
SK_RSA = BigInteger.Parse(keys[5]);
}
p_rsa_sign.Text = P_RSA.ToString();
q_rsa_sign.Text = Q_RSA.ToString();
n_rsa_sign.Text = N.ToString();
phin_rsa_sign.Text = PHI_N.ToString();
pk_rsa_sign.Text = PK_RSA.ToString();
sk_rsa_sign.Text = SK_RSA.ToString();
rsa_signature = new RSASignature(PK_RSA, N, PHI_N, SK_RSA, size_rsa_sign);
}
catch
{
return;
}
}
public IActionResult CreateLicense(string format, string sign, [FromBody] LicenseModel model)
{
ILicense license = null;
format = format.ToUpperInvariant();
switch (format)
{
case "XML":
license = new XmlLicense();
break;
case "ASCII":
case "BASE32":
license = new StringLicense();
break;
default:
return(BadRequest());
}
ISignatureProvider signature = null;
switch (sign.ToUpperInvariant())
{
case "ECDSA":
var ecdsa = new ECDsaSignature(ECDsaKeySize.KeySize112bit);
ecdsa.CreateKeyPair();
// Embed public key information in the license
ecdsa.GenerateKeyInfo = true;
model.PublicKey = ecdsa.PublicKey;
signature = ecdsa;
break;
case "RSA":
var rsa = new RSASignature(1024);
rsa.CreateKeyPair();
signature = rsa;
break;
default:
return(BadRequest());
}
// Fill license
license.WithId(model.Id ?? "1")
.IssuedAt(DateTime.UtcNow)
.WithType(model.Type ?? string.Empty)
.ForProduct(model.Product ?? string.Empty, model.Version ?? string.Empty)
.LicensedTo(model.Licensee ?? string.Empty);
if (model.ExpireDate.HasValue)
{
license.ExpiresAt(model.ExpireDate.Value.ToUniversalTime());
}
if (model.SupportExpireDate.HasValue)
{
license.SupportExpiresAt(model.SupportExpireDate.Value.ToUniversalTime());
}
// Sign license
var licenseBuilder = license.SignWith(signature);
var stringBuilder = licenseBuilder as StringLicenseBuilder;
if (stringBuilder != null)
{
switch (format)
{
case "ASCII":
stringBuilder.Format = StringFormat.Ascii;
break;
case "BASE32":
stringBuilder.Format = StringFormat.Base32;
break;
}
}
// Get license key
model.LicenseKey = licenseBuilder.ToReadableString();
return(Ok(model));
}
