Authorization data for JBKJS service

JbkjsRequestPrepare.cs

using System;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

public class Program
{
    public static void Main()
    {
        var usergroup = "guests";
        var username = "guest";
        var password = "guest";

        var authorizationHeader = "Basic " + $"{usergroup}-{username}".ToBase64String();

        SHA512 sha512 = new SHA512Managed();
        var apiKeyHash = sha512.ComputeHash(Encoding.UTF8.GetBytes(password));
        var apiKey = BitConverter
            .ToString(apiKeyHash)
            .Replace("-", "")
            .ToLower()
            .ToBase64String();

        Console.WriteLine(authorizationHeader);
        Console.WriteLine(apiKey);
    }

    
}

public static class Extensions
{
    public static string ToBase64String(this string value) => Convert.ToBase64String(value.ToByteArray());

    public static byte[] ToByteArray(this string str)
    {
        System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();
        return encoding.GetBytes(str);
    }
}