protected string Sign2(string msg, string certName, ILogger logger)
        {
            byte[] bytes = System.Text.Encoding.UTF8.GetBytes(msg);
            
            Gost3411_2012_256CryptoServiceProvider gost3411 = new Gost3411_2012_256CryptoServiceProvider();
            byte[] hashValue = gost3411.ComputeHash(bytes);
            gost3411.Clear();

            var signerCert = GetSignerCert(certName, logger);
            
            
            Gost3410_2012_256CryptoServiceProvider cert_key = signerCert.PrivateKey as Gost3410_2012_256CryptoServiceProvider;
            var sign = cert_key.CreateSignature(hashValue);
            
            return Base64UrlEncoder.Encode(sign);
            
        }