task3

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


namespace task3
{
    class Program
    {
        static void Main(string[] args)
        {
            int BotChoice = keygen.BotChoice();
            Console.WriteLine(BotChoice);

            string BotKey = keygen.getkey(BotChoice);
            Console.WriteLine(BotKey);

            byte[] bytes = Encoding.ASCII.GetBytes(BotKey);
            string HMAC = keygen.getHMAC(bytes);
            Console.WriteLine(HMAC);
            Console.ReadKey();

        }
    }
    public class keygen
    {
        int KeyValue;
        int HMACValue;

        public static int BotChoice()
        {
            Random random = new System.Random();
            int KeyValue = random.Next(1, 5);
            return KeyValue;
        }
        public static string getkey(int BotValue)
        {
            System.Security.Cryptography.AesCryptoServiceProvider crypto = new System.Security.Cryptography.AesCryptoServiceProvider();
            crypto.KeySize = 128;
            crypto.BlockSize = 128;
            crypto.GenerateKey();
            byte[] keyGenerated = crypto.Key;
            string Key = Convert.ToBase64String(keyGenerated);
            return Key;
        }
        public static string getHMAC(byte[] a)
        {
            var HMACValue = new HMACSHA256(a);
            var HMACKey = Convert.ToBase64String(HMACValue.Key);
            return HMACKey;

        }

    }
}