Opc.Ua.Bindings.TcpChannel.Rsa_GetPlainTextBlockSize C# (CSharp) Method

        protected static int Rsa_GetPlainTextBlockSize(X509Certificate2 encryptingCertificate, bool useOaep)
        {
            using (RSA rsa = encryptingCertificate.GetRSAPublicKey())
            {
                if (rsa != null)
                {
                    if (useOaep)
                    {
                        return rsa.KeySize / 8 - 42;
                    }
                    else
                    {
                        return rsa.KeySize / 8 - 11;
                    }
                }
            }
            return -1;
        }