def auth_card(mf_reader: MFRC522, uid, key_bin, block, key_a, format):
cmd = mf_reader.PICC_AUTHENT1A if key_a else mf_reader.PICC_AUTHENT1B
if key_bin is not None:
trailer_block = get_trailer_block(block)
if key_a:
key = key_bin[trailer_block * 16:(trailer_block * 16) + 6]
else:
key = key_bin[(trailer_block * 16) + 10:(trailer_block * 16) + 16]
if mf_reader.MFRC522_Auth(cmd, block, key, uid) == mf_reader.MI_OK:
return True, key
if format or key_bin is None:
for key in GUESS_KEYS:
if mf_reader.MFRC522_Auth(cmd, block, key, uid) == mf_reader.MI_OK:
return True, key
# Try to anticol again.
mf_reader.MFRC522_HaltA()
mf_reader.antennaOff()
time.sleep(0.1)
mf_reader.antennaOn()
(success, _) = anticol(mf_reader,
print_info=False,
wakeup=True,
no_rats=True)
if not success:
print('tag was removed', end='')
return False, None
# Faild to find keys.
return False, None
def re_anticol(mf_reader: MFRC522):
# Try to anticol again.
mf_reader.MFRC522_HaltA()
mf_reader.antennaOff()
mf_reader.antennaOn()
(success, _) = anticol(mf_reader,
print_info=False,
wakeup=True,
no_rats=True)
if not success:
print('Tag has been removed')
exit(-1)