lul

using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;

namespace sha1
{
    class Program
    {
        const UInt32 H0 = 0x67452301;
        const UInt32 H1 = 0xefcdab89;
        const UInt32 H2 = 0x98badcfe;
        const UInt32 H3 = 0x10325476;
        const UInt32 H4 = 0xc3d2e1f0;
        private static List<BitArray> Msg;
        static void Main(string[] args)
        {
            if (args[0] != null)
            {
                Msg = new List<BitArray>();
                List<byte> fileBuff = File.ReadAllBytes(args[0]).ToList();
                int len = fileBuff.Count*8;
                fileBuff.Add((byte)0b10000000);

                for(int i=0; i<fileBuff.Count/16;i++)
                {
                    Msg.Add(new BitArray(SubArray<Byte>(fileBuff, i * 16, 16)));
                }
            }
            else Console.WriteLine("no file or bad file");
        }

        public static T[] SubArray<T>(this T[] data, int index, int length)
        {
            T[] result = new T[length];
            Array.Copy(data, index, result, 0, length);
            return result;
        }
    }
}