code: def _split_raw_signature(sig):
          
          c_length = len(sig) // 2
          r = int_from_bytes(sig[:c_length], byteorder='big')
          s = int_from_bytes(sig[c_length:], byteorder='big')
          return r, s
docs: Split raw signature into components
  
          :param sig: The signature
          :return: A 2-tuple