using System;

using System.Security.Cryptography;

using Microsoft.IdentityModel.JsonWebTokens;

using Microsoft.IdentityModel.Tokens;

​

using System.Security.Claims;

using System.Collections.Generic;

using System.Text;

using System.IdentityModel.Tokens.Jwt ;

​

​

/*

NOTE: Requires the following NuGet Packages:

Microsoft.IdentityModel.JsonWebTokens

Microsoft.AspNetCore.Authentication.JwtBearer

*/

​

public class Program

{

    private static String _issuer = "izmo";

    private static String _audience = "";

    private static byte[] _signingKey=null;

    private static byte[] _encryptKey = Encoding.Default.GetBytes("2BxsW+VRqK2/gdf/GzRj07qZsJr11r4G5dh5TE0JQ76mEXPmWzsFN0QNVVEUfF/55ZyJg0yvaVw0x34GjRNPasG+LfPySnyI89baHpHie3SghpsrE6Uws/gGHAdZxHDl7SCsWvdaGJmzDaIumpI9YM6jv8jTUcBlUi89A2bjJePr9YGL3RfZynBK98rOOD2MxIX3u/vDYcytgp8kzXNT6Yrz3ubFQPxYzy/SgsZ6LThJzSjGz+R6mMTrFedSh90H");

    private static String _expiration = null;

    public static void Main()

    {

    //  var key = new RsaSecurityKey(RSA.Create(2048));

        //use key.Rsa.TryExportRSAPublicKey() and key.Rsa.TryExportRSAPrivateKey() to get the key values

​

        //var handler = new JsonWebTokenHandler();

        var now = DateTime.UtcNow;

        //var descriptor = new SecurityTokenDescriptor

        //{

    //      Issuer = "me", 

        //  Audience = "you", 

        //  IssuedAt = now, 

        //  NotBefore = now, 

        //  Expires = now.AddMinutes(5), 

        //  Subject = new ClaimsIdentity(new List<Claim>{new Claim("sub", "mike")}), 

        //  SigningCredentials = new SigningCredentials(key, SecurityAlgorithms.RsaSha256Signature)

        //};

        string jwt = Encode(out now);

        Console.WriteLine(jwt);

    }

    private static SecurityTokenDescriptor BuildTokenDescriptor( out DateTime generatedDate){

        var claims = new Dictionary<string, object>()

            {

                { "TCarContactID", "575649" },

                { "VehicleID", "3_1761388" },

                { "ReturnUrl","https://rrgdemo.eudemosite.com" }

            };

generatedDate = EpochTime.DateTime(EpochTime.GetIntDate(DateTime.UtcNow));

​

var securityTokenDescriptor = new SecurityTokenDescriptor()

{

Issuer = _issuer,

Audience = _audience,

Claims = claims,

IssuedAt = generatedDate,

NotBefore = generatedDate,

Expires = DateTime.MaxValue,

SigningCredentials = null,

EncryptingCredentials = null

};

​

if (_signingKey != null)

{

securityTokenDescriptor.SigningCredentials = new SigningCredentials(new SymmetricSecurityKey(_signingKey), SecurityAlgorithms.HmacSha256Signature);

}

if (_encryptKey != null)

{

securityTokenDescriptor.EncryptingCredentials = new EncryptingCredentials(new SymmetricSecurityKey(_encryptKey), System.IdentityModel.Tokens.Jwt.JwtConstants.DirectKeyUseAlg, SecurityAlgorithms.Aes256CbcHmacSha512);

}

​

​

return securityTokenDescriptor;

}

/// <summary>

/// Encodes a payload to a JWT.

/// </summary>

/// <param name="payload">The payload data of the JWT.</param>

/// <param name="generatedDate">Indicates the date used during the JWT generation.</param>

/// <returns>The JWT generated.</returns>

public static string Encode(out DateTime generatedDate)

{

var tokenHandler = new JwtSecurityTokenHandler();

​

var securityTokenDescriptor = BuildTokenDescriptor(out generatedDate);

​

var jwtToken = tokenHandler.CreateJwtSecurityToken(securityTokenDescriptor);

​

return tokenHandler.WriteToken(jwtToken);

}

​

}