NFC0541 read Mifare Classic 1K

[Olivier Bontron]

I’m using NFC05A1 and the STMF4xx-Nucle-Polling project.

I’d like to interact with  a Mifare classic card 1K.

I am aware Stm won’t provide any code that would deal with encryption and this is not what I’m asking for.

The issue I encounter is about the first step after SELECT : this is a clear text message, starting with 30 then the sector number. What I expect is the card answering with a nonce.

The issue I encounter is I receive a ‘framing problem’ or ‘timeout’ error message.

Here are the first four requests, which are working fine I think, the fifth one does not.

* Request 1:

Answer to rfalISO14443ATransceiveShortFrame  (with RFAL_14443A_SHORTFRAME_CMD_REQA as a command) is : 04 00.

* Request 2:

Then there is another rfalISO14443ATransceiveShortFrame   instruction this time with RFAL_14443A_SHORTFRAME_CMD_WUPA

*Request 3:

Then a rfalNfcaSelReq  structure is set :

selReq (rfalNfcaSelReq  structure)

selReq.selCmd = 93

selReq.selPar =20

rfalNfcaTxRetry( ret, rfalISO14443ATransceiveAnticollisionFrame( (uint8_t*)&selReq, &bytesTxRx, &bitsTxRx, &bytesRx, RFAL_NFCA_FDTMIN ), ((devLimit==0)?RFAL_NFCA_N_RETRANS:0), RFAL_NFCA_T_RETRANS );

Request answer : the request result consists in

the card Uid  D0 74 CC A4, (correct uid)

and the bcc CC

*Request 4:

Then another request is a SELECT.

selReq.selCmd =93;

selReq.selPar= 70;

selReq.nfcid1[0]= D0

selReq.nfcid1[1]=74;

selReq.nfcid1[2]=CC;

selReq.nfcid1[3]=A4;

selReq.bcc=CC;

       rfalNfcaTxRetry( ret, rfalTransceiveBlockingTxRx( (uint8_t*)&selReq, sizeof(rfalNfcaSelReq), (uint8_t*)selRes, sizeof(rfalNfcaSelRes), &bytesRx, RFAL_TXRX_FLAGS_DEFAULT, RFAL_NFCA_FDTMIN ), ((devLimit==0)?RFAL_NFCA_N_RETRANS:0), RFAL_NFCA_T_RETRANS );

Its results can be found within selRes :

Sak:  08

So far, the device is a Mifare Classic (sak 08) , this device is device[0] and its uid is known.

*Request 5 : this is where there is an issue.

Ask the card to access sector 00.

As Mr Michael Roland suggested in this post :

https://stackoverflow.com/questions/56334836/is-there-any-function-for-reading-nfc-a-iso14443a-tag-with-x-nucleo-nfc05a1

lenTx = 0;

bufferTx[lenTx++] = 0x30;

bufferTx[lenTx++] = 0x00; // sector

lenRxMax = 16;

lenRx = 0;

status = rfalTransceiveBlockingTxRx(&bufferTx[0], lenTx, &bufferRx[0], lenRxMax, &lenRx, RFAL_TXRX_FLAGS_DEFAULT, rfalConvMsTo1fc(5));

Answer

status value :  9

Another attempt with different flags.

status = rfalTransceiveBlockingTxRx(&bufferTx[0], lenTx, &bufferRx[0], lenRxMax, &lenRx,

RFAL_TXRX_FLAGS_CRC_TX_AUTO | RFAL_TXRX_FLAGS_CRC_RX_REMV | RFAL_TXRX_FLAGS_NFCIP1_OFF | RFAL_TXRX_FLAGS_AGC_ON | RFAL_TXRX_FLAGS_PAR_RX_REMV | RFAL_TXRX_FLAGS_PAR_TX_AUTO | RFAL_TXRX_FLAGS_NFCV_FLAG_AUTO, RFAL_NFCA_T_RETRANS);

Same answer

status value :  9

ERR_FRAMING                          = 9, /*!< Framing error */

I’ve added some logs within rfalTransceiveBlockingRx to have a look at the states :

platformLog("gRFAL.state %d\r\n", gRFAL.state);

do{

    rfalWorker();

    platformLog("gRFAL.TxRx.state %d\r\n", gRFAL.TxRx.state);

  }

Logs for the successful requests (REQA, SEL) are :

gRFAL.state 3

gRFAL.TxRx.state 83 (RFAL_TXRX_STATE_RX_WAIT_RXS)

gRFAL.TxRx.state 90 (RFAL_TXRX_STATE_RX_FAIL)

gRFAL.TxRx.state 0 (RFAL_TXRX_STATE_IDLE)

status is 0 ERR_NONE            

Logs for the last read request are :

gRFAL.state 3

gRFAL.TxRx.state 83(RFAL_TXRX_STATE_RX_WAIT_RXS)

gRFAL.TxRx.state 84 (RFAL_TXRX_STATE_RX_WAIT_RXE)

gRFAL.TxRx.state 84

gRFAL.TxRx.state 84

gRFAL.TxRx.state 84

gRFAL.TxRx.state 84

gRFAL.TxRx.state 84

gRFAL.TxRx.state 90(RFAL_TXRX_STATE_RX_FAIL)

gRFAL.TxRx.state 0(RFAL_TXRX_STATE_IDLE)

status is 9 ERR_FRAMING /*!< Framing error */

Many thanks in advance,

Olivier

[Ntuye.1]

How correctly formatted Auth with key A command?

[Brian TIDAL]

See reply in  https://community.st.com/s/question/0D53W000003xs2CSAQ/cr95hf,