public static RSAParameters GetKey(string key)
{
byte[] jsonPublicKeyBytes = Convert.FromBase64String(key);
string jsonPublicKey = _encoder.GetString(jsonPublicKeyBytes);
RSAParametersModel rsaParametersModel = JsonConvert.DeserializeObject <RSAParametersModel>(jsonPublicKey);
return(rsaParametersModel.ToRSAParameters());
}