public static byte[] SerializateMessage(string message, TlsManager tlsManager, RsaManager rsaManager)
        {
            byte[] IV,
            hashSum,
            digitalSignature,
            hashSumCount,
            messageBytes;
            string publicRSAKey = rsaManager.PublicKey;

            message = $"|rsaKeyStart|{publicRSAKey}|rsaKeyEnd|{message}";

            messageBytes     = tlsManager.EncryptMessage(message, out IV, out hashSum);
            hashSumCount     = new byte[] { (byte)hashSum.Length };
            digitalSignature = rsaManager.GetDigitalSignature(hashSum);

            return(IV.Concat(hashSumCount.Concat(hashSum.Concat(digitalSignature.Concat(messageBytes)))).ToArray());
        }