Создание и проверка цифровой подписи C# CryptoAPI

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;

namespace Цифровая_подпись
{
    class Program
    {
        static void Main(string[] args)
        {
            byte[] HashValue = { 59, 4, 248, 102, 77, 97, 142, 201, 210, 12, 224, 93, 25, 41, 100, 197, 213, 134, 130, 135 };

            var RSA = new RSACryptoServiceProvider();

            var RSAFormatter = new RSAPKCS1SignatureFormatter(RSA);

            var RSADeFormatter = new RSAPKCS1SignatureDeformatter(RSA);

            RSAFormatter.SetHashAlgorithm("SHA1");

            var SignedHashValue = RSAFormatter.CreateSignature(HashValue);

            RSADeFormatter.SetHashAlgorithm("SHA1");

            if(RSADeFormatter.VerifySignature(HashValue, SignedHashValue))
            {
                Console.WriteLine("The signature was verified.");
            }
            else
            {
                Console.WriteLine("The signature was not verified.");
            }
        }
    }
    }