code: def _dump_additional_attributes(additional_attributes):
      
  
      attributes_raw = io.BytesIO(additional_attributes)
      attributes_hex = binascii.hexlify(additional_attributes)
  
      if not len(additional_attributes):
          return attributes_hex
  
      len_attribute, = unpack('<I', attributes_raw.read(4))
      if len_attribute != 8:
          return attributes_hex
  
      attr_id, = unpack('<I', attributes_raw.read(4))
      if attr_id != APK._APK_SIG_ATTR_V2_STRIPPING_PROTECTION:
          return attributes_hex
          
      scheme_id, = unpack('<I', attributes_raw.read(4))
  
      return "stripping protection set, scheme %d" % scheme_id
docs: try to parse additional attributes, but ends up to hexdump if the scheme is unknown