private static LicenseEntity ReadLicense(Type licenseObjType, string licenseString, byte[] certPubKeyData, out LicenseStatus licStatus, out string validationMsg)
{
if (string.IsNullOrWhiteSpace(licenseString))
{
licStatus = LicenseStatus.Cracked;
validationMsg = "Licencja uszkodzona";
return(null);
}
LicenseEntity license = null;
try
{
//Get RSA key from certificate
X509Certificate2 cert = new X509Certificate2(certPubKeyData);
RSACryptoServiceProvider rsaKey = (RSACryptoServiceProvider)cert.PublicKey.Key;
XmlDocument xmlDoc = new XmlDocument {
PreserveWhitespace = true
};
// Load an XML file into the XmlDocument object.
xmlDoc.LoadXml(Encoding.UTF8.GetString(Convert.FromBase64String(licenseString)));
// Verify the signature of the signed XML.
if (VerifyXml(xmlDoc, rsaKey))
{
XmlNodeList nodeList = xmlDoc.GetElementsByTagName("Signature");
xmlDoc.DocumentElement?.RemoveChild(nodeList[0]);
string licXml = xmlDoc.OuterXml;
//Deserialize license
XmlSerializer serializer = new XmlSerializer(typeof(LicenseEntity), new[] { licenseObjType });
using (StringReader reader = new StringReader(licXml))
{
license = (LicenseEntity)serializer.Deserialize(reader);
}
licStatus = license.DoExtraValidation(out validationMsg);
}
else
{
licStatus = LicenseStatus.Invalid;
validationMsg = "Nieprawidłowy plik licencji";
}
}
catch
{
licStatus = LicenseStatus.Cracked;
validationMsg = "Licencja uszkodzona";
}
return(license);
}
public static LicenseEntity ParseLicenseFromBASE64String(Type licenseObjType, string licenseString, byte[] certPubKeyData, out LicenseStatus licStatus, out string validationMsg)
{
validationMsg = string.Empty;
licStatus = LicenseStatus.UNDEFINED;
if (string.IsNullOrWhiteSpace(licenseString))
{
licStatus = LicenseStatus.CRACKED;
return(null);
}
string _licXML = string.Empty;
LicenseEntity _lic = null;
try
{
//Get RSA key from certificate
X509Certificate2 cert = new X509Certificate2(certPubKeyData);
RSACryptoServiceProvider rsaKey = (RSACryptoServiceProvider)cert.PublicKey.Key;
XmlDocument xmlDoc = new XmlDocument();
// Load an XML file into the XmlDocument object.
xmlDoc.PreserveWhitespace = true;
xmlDoc.LoadXml(Encoding.UTF8.GetString(Convert.FromBase64String(licenseString)));
// Verify the signature of the signed XML.
if (VerifyXml(xmlDoc, rsaKey))
{
XmlNodeList nodeList = xmlDoc.GetElementsByTagName("Signature");
xmlDoc.DocumentElement.RemoveChild(nodeList[0]);
_licXML = xmlDoc.OuterXml;
//Deserialize license
XmlSerializer _serializer = new XmlSerializer(typeof(LicenseEntity), new Type[] { licenseObjType });
using (StringReader _reader = new StringReader(_licXML))
{
_lic = (LicenseEntity)_serializer.Deserialize(_reader);
}
licStatus = _lic.DoExtraValidation(out validationMsg);
}
else
{
licStatus = LicenseStatus.INVALID;
}
}
catch
{
licStatus = LicenseStatus.CRACKED;
}
return(_lic);
}