Exemple #1
0
        public static string GenerateLicenseBASE64String(LicenseEntity lic, byte[] certPrivateKeyData, SecureString certFilePwd)
        {
            XmlDocument _licenseObject = new XmlDocument();

            using (StringWriter _writer = new StringWriter())
            {
                var _serializer = new XmlSerializer(typeof(LicenseEntity), new Type[] {
                    lic.GetType()
                });
                _serializer.Serialize(_writer, lic);
                _licenseObject.LoadXml(_writer.ToString());
            }
            var cert   = new X509Certificate2(certPrivateKeyData, certFilePwd);
            var rsaKey = (RSACryptoServiceProvider)cert.PrivateKey;

            SignXML(_licenseObject, rsaKey);
            return(Convert.ToBase64String(Encoding.UTF8.GetBytes(_licenseObject.OuterXml)));
        }
Exemple #2
0
        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
            {
                X509Certificate2         cert   = new X509Certificate2(certPubKeyData);
                RSACryptoServiceProvider rsaKey = (RSACryptoServiceProvider)cert.PublicKey.Key;
                XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.PreserveWhitespace = true;
                xmlDoc.LoadXml(Encoding.UTF8.GetString(Convert.FromBase64String(licenseString)));
                if (VerifyXml(xmlDoc, rsaKey))
                {
                    XmlNodeList nodeList = xmlDoc.GetElementsByTagName("Signature");
                    xmlDoc.DocumentElement.RemoveChild(nodeList[0]);
                    _licXML = xmlDoc.OuterXml;
                    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);
        }