__int64 __fastcall gen_serial(const char *a1)
{
  const char *i; // [rsp+8h] [rbp-38h]
  unsigned int v3; // [rsp+14h] [rbp-2Ch]

  v3 = strlen(a1);
  for ( i = a1; *i; ++i )
    v3 += 8 * *i + 2;
  return v3;
}