AssemblyCSharp.FileHelper.GetMD5OfFile C# (CSharp) Méthode

        public static byte[] GetMD5OfFile(string filename, string seed = null)
        {
            using (var md5 = MD5.Create())
            {
            if (seed == null)
            {
                using (var stream = File.OpenRead(filename))
                {
                    return md5.ComputeHash(stream);
                }
            }
            else
            {
                var bytes = Encoding.UTF8.GetBytes(seed);
                md5.TransformBlock(bytes, 0, bytes.Length, bytes, 0);

                using (var stream = File.OpenRead(filename))
                {
                    var buffer = Buffer;
                    int byteCount;
                    while ((byteCount = stream.Read(buffer, 0, buffer.Length)) > 0)
                    {
                        md5.TransformBlock(buffer, 0, byteCount, buffer, 0);
                    }
                    md5.TransformFinalBlock(buffer, 0, 0);
                    return md5.Hash;
                }
            }
            }
        }