jwt_token_gen.cs

using Microsoft.IdentityModel.Tokens;
using System;
using System.IdentityModel.Tokens.Jwt;
using System.Text;

namespace JwtTest
{
    class Program
    {
        static void Main(string[] args)
        {
            var keyBytes = new byte[64];
            var passwordBytes = Encoding.UTF8.GetBytes("security");
            Buffer.BlockCopy(passwordBytes, 0, keyBytes, 0, passwordBytes.Length);
            SymmetricSecurityKey key = new SymmetricSecurityKey(keyBytes);

            JwtHeader header = new JwtHeader(new Microsoft.IdentityModel.Tokens.SigningCredentials(key, "HS256"));

            JwtPayload payload = new JwtPayload();

            payload.Add("sub", "1234567890");
            payload.Add("name", "John Doe");
            payload.Add("admin", true);

            JwtSecurityToken token = new JwtSecurityToken(header, payload);
            JwtSecurityTokenHandler h = new JwtSecurityTokenHandler();
            Console.WriteLine(h.WriteToken(token));
        }
    }
}