using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Security.Cryptography;
using System.Net.NetworkInformation;

namespace FS_CLIENT
{
    class Utility
    {
        public static string GetHash(string filename)
        {
            using (var md5 = MD5.Create())
            {
                using (var stream = File.OpenRead(filename))
                {
                    return BitConverter.ToString(md5.ComputeHash(stream)).Replace("-", "".ToLower());
                }
            }
        }

        public static string GetMacAddress()
        {
            string macAddresses = string.Empty;
            string mac = string.Empty;

            foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
            {
                if (nic.OperationalStatus == OperationalStatus.Up)
                {
                    mac = string.Join(":", (from z in nic.GetPhysicalAddress().GetAddressBytes() select z.ToString("X2")).ToArray());
                    break;
                }
            }

            return mac;
        }
    }
}