public static void SaveLicenseKey(String licenseKey)
{
String decryptedLicenseKey = DecryptStringAES(licenseKey, GetUserId());
byte[] decryptedLicenseData = Encoding.UTF8.GetBytes(decryptedLicenseKey);
byte[] encryptedLicenseData = Encoding.UTF8.GetBytes(licenseKey);
IsolatedStorageHelper.Save(LICENSE_KEY_PATH, encryptedLicenseData);
}
public static bool IsLicensed()
{
if (IsolatedStorageHelper.Exists(LICENSE_KEY_PATH))
{
byte[] encryptedLicenseData = IsolatedStorageHelper.Load(LICENSE_KEY_PATH);
String encryptedLicenseString = Encoding.UTF8.GetString(encryptedLicenseData);
// right now it's not used, we don't check what's in
// if the file exists and it decrypts without exceptions, we assume that it's ok
// but this data can be used to store license date, user name, email and so on...
String decryptedLicenseKey = DecryptStringAES(encryptedLicenseString, GetUserId());
return(StringComparer.Ordinal.Equals(decryptedLicenseKey, "01'\"@'. *!@^@*&#%89~{]{~"));
}
return(false);
}
public static void Clear()
{
_instance._results.Clear();
IsolatedStorageHelper.Delete(_serializationPath);
}
static ResultsStorage()
{
AppDomain.CurrentDomain.ProcessExit += (o, e) =>
IsolatedStorageHelper.Save(_serializationPath, SerializationHelper.Serialize(_instance));
}
public static bool RemoveLicenseKey()
{
return(IsolatedStorageHelper.Delete(LICENSE_KEY_PATH));
}