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[FL-1595] Add EMV tags (#625)

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* nfc: add expiration date tag to emv parser
* nfc: add expiration date save and display
* nfc: add long apdu test command
This commit is contained in:
gornekich
2021-08-04 21:58:11 +03:00
committed by GitHub
parent 841804026e
commit 5741ed2bd5
11 changed files with 100 additions and 14 deletions
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12
applications/nfc/nfc_device.c
View File

@@ -203,6 +203,10 @@ uint16_t nfc_device_prepare_bank_card_string(NfcDevice* dev, string_t bank_card_
for(uint8_t i = 0; i < sizeof(data->number); i++) {
string_cat_printf(bank_card_string, " %02X", data->number[i]);
}
if(data->exp_mon) {
string_cat_printf(
bank_card_string, "\nExp date: %02X/%02X", data->exp_mon, data->exp_year);
}
return string_size(bank_card_string);
}
@@ -236,6 +240,14 @@ bool nfc_device_parse_bank_card_string(NfcDevice* dev, string_t bank_card_string
break;
}
parsed = true;
// Check expiration date presence
ws = string_search_str(bank_card_string, "Exp date: ");
if(ws != STRING_FAILURE) {
// strlen("Exp date: ") = 10
string_right(bank_card_string, 10);
nfc_device_read_hex(bank_card_string, &data->exp_mon, 1);
nfc_device_read_hex(bank_card_string, &data->exp_year, 1);
}
} while(0);
return parsed;

2
applications/nfc/nfc_device.h
View File

@@ -42,7 +42,7 @@ typedef struct {
uint16_t aid_len;
uint8_t number[8];
uint8_t exp_mon;
uint16_t exp_year;
uint8_t exp_year;
char cardholder[32];
} NfcEmvData;

68
applications/nfc/nfc_worker.c
View File

@@ -81,8 +81,8 @@ void nfc_worker_task(void* context) {
nfc_worker_read_emv_app(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadEMV) {
nfc_worker_read_emv(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateEMV) {
nfc_worker_emulate_emv(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateApdu) {
nfc_worker_emulate_apdu(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateReadMifareUl) {
nfc_worker_read_mifare_ul(nfc_worker);
} else if(nfc_worker->state == NfcWorkerStateEmulateMifareUl) {
@@ -324,6 +324,10 @@ void nfc_worker_read_emv(NfcWorker* nfc_worker) {
result->emv_data.number,
emv_app.card_number,
sizeof(emv_app.card_number));
if(emv_app.exp_month) {
result->emv_data.exp_mon = emv_app.exp_month;
result->emv_data.exp_year = emv_app.exp_year;
}
// Notify caller and exit
if(nfc_worker->callback) {
nfc_worker->callback(nfc_worker->context);
@@ -348,7 +352,7 @@ void nfc_worker_read_emv(NfcWorker* nfc_worker) {
}
}
void nfc_worker_emulate_emv(NfcWorker* nfc_worker) {
void nfc_worker_emulate_apdu(NfcWorker* nfc_worker) {
ReturnCode err;
uint8_t tx_buff[255] = {};
uint16_t tx_len = 0;
@@ -362,8 +366,46 @@ void nfc_worker_emulate_emv(NfcWorker* nfc_worker) {
.device = NfcDeviceNfca,
.protocol = NfcDeviceProtocolEMV,
};
// Test RX data
const uint8_t debug_rx[] = {
0xba, 0x0b, 0xba, 0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca,
0xca, 0xfe, 0xfa, 0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88,
0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba,
0x0b, 0xba, 0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca,
0xfe, 0xfa, 0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99,
0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b,
0xba, 0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe,
0xfa, 0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa,
0xbb, 0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b, 0xba,
0xba, 0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe, 0xfa,
0xce, 0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb,
0xcc, 0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b, 0xba, 0xba,
0x20, 0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe, 0xfa, 0xce,
0x14, 0x88, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xaa, 0xbb, 0xcc,
0xdd, 0xee, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0xba, 0x0b, 0xba, 0xba, 0x20,
0x00, 0x02, 0x28, 0xde, 0xad, 0xbe, 0xef, 0x00, 0xca, 0xca, 0xca, 0xfe, 0xfa, 0xce, 0x14,
0x88, 0x00};
// Test TX data
const uint8_t debug_tx[] = {
0x12, 0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32,
0x10, 0x14, 0x88, 0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad,
0xbe, 0xef, 0xce, 0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12,
0x34, 0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10,
0x14, 0x88, 0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe,
0xef, 0xce, 0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34,
0x56, 0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14,
0x88, 0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe, 0xef,
0xce, 0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34, 0x56,
0x78, 0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14, 0x88,
0x02, 0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe, 0xef, 0xce,
0xee, 0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34, 0x56, 0x78,
0x9a, 0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14, 0x88, 0x02,
0x28, 0x00, 0x00, 0xca, 0xca, 0x00, 0xc0, 0xc0, 0x00, 0xde, 0xad, 0xbe, 0xef, 0xce, 0xee,
0xec, 0xca, 0xfe, 0xba, 0xba, 0xb0, 0xb0, 0xac, 0xdc, 0x11, 0x12, 0x34, 0x56, 0x78, 0x9a,
0xbc, 0xde, 0xff, 0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10, 0x14, 0x88, 0x02, 0x28,
0x00, 0x00};
while(nfc_worker->state == NfcWorkerStateEmulateEMV) {
while(nfc_worker->state == NfcWorkerStateEmulateApdu) {
if(api_hal_nfc_listen(params.uid, params.uid_len, params.atqa, params.sak, 300)) {
FURI_LOG_I(NFC_WORKER_TAG, "POS terminal detected");
// Read data from POS terminal
@@ -401,7 +443,23 @@ void nfc_worker_emulate_emv(NfcWorker* nfc_worker) {
tx_len = emv_get_proc_opt_ans(tx_buff);
err = api_hal_nfc_data_exchange(tx_buff, tx_len, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
FURI_LOG_I(NFC_WORKER_TAG, "Received PDOL");
FURI_LOG_I(NFC_WORKER_TAG, "Transive PDOL ANS");
} else {
FURI_LOG_E(NFC_WORKER_TAG, "Error in 4rd data exchange: Transive PDOL ANS");
api_hal_nfc_deactivate();
continue;
}
if(*rx_len != sizeof(debug_rx) || memcmp(rx_buff, debug_rx, sizeof(debug_rx))) {
FURI_LOG_E(NFC_WORKER_TAG, "Failed long message test");
} else {
FURI_LOG_I(NFC_WORKER_TAG, "Correct debug message received");
tx_len = sizeof(debug_tx);
err = api_hal_nfc_data_exchange(
(uint8_t*)debug_tx, tx_len, &rx_buff, &rx_len, false);
if(err == ERR_NONE) {
FURI_LOG_I(NFC_WORKER_TAG, "Transive Debug message");
}
}
api_hal_nfc_deactivate();
} else {

2
applications/nfc/nfc_worker.h
View File

@@ -14,7 +14,7 @@ typedef enum {
NfcWorkerStateEmulate,
NfcWorkerStateReadEMVApp,
NfcWorkerStateReadEMV,
NfcWorkerStateEmulateEMV,
NfcWorkerStateEmulateApdu,
NfcWorkerStateField,
NfcWorkerStateReadMifareUl,
NfcWorkerStateEmulateMifareUl,

2
applications/nfc/nfc_worker_i.h
View File

@@ -36,7 +36,7 @@ void nfc_worker_read_emv_app(NfcWorker* nfc_worker);
void nfc_worker_read_emv(NfcWorker* nfc_worker);
void nfc_worker_emulate_emv(NfcWorker* nfc_worker);
void nfc_worker_emulate_apdu(NfcWorker* nfc_worker);
void nfc_worker_detect(NfcWorker* nfc_worker);

2
applications/nfc/scenes/nfc_scene_emulate_apdu_sequence.c
View File

@@ -11,7 +11,7 @@ const void nfc_scene_emulate_apdu_sequence_on_enter(void* context) {
// Setup and start worker
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewPopup);
nfc_worker_start(nfc->worker, NfcWorkerStateEmulateEMV, &nfc->dev.dev_data, NULL, nfc);
nfc_worker_start(nfc->worker, NfcWorkerStateEmulateApdu, &nfc->dev.dev_data, NULL, nfc);
}
const bool nfc_scene_emulate_apdu_sequence_on_event(void* context, SceneManagerEvent event) {

6
applications/nfc/scenes/nfc_scene_read_emv_data_success.c
View File

@@ -59,6 +59,12 @@ void nfc_scene_read_emv_data_success_on_enter(void* context) {
char sak_str[16];
snprintf(sak_str, sizeof(sak_str), "SAK: %02X", nfc_data->sak);
widget_add_string_element(nfc->widget, 121, 42, AlignRight, AlignTop, FontSecondary, sak_str);
if(emv_data->exp_mon) {
char exp_str[16];
snprintf(
exp_str, sizeof(exp_str), "Exp: %02X/%02X", emv_data->exp_mon, emv_data->exp_year);
widget_add_string_element(nfc->widget, 7, 32, AlignLeft, AlignTop, FontSecondary, exp_str);
}
view_dispatcher_switch_to_view(nfc->view_dispatcher, NfcViewWidget);
}

4
applications/nfc/views/bank_card.c
View File

@@ -49,10 +49,10 @@ void bank_card_set_number(BankCard* bank_card, uint8_t* number) {
string_clear(num_str);
}
void bank_card_set_exp_date(BankCard* bank_card, uint8_t mon, uint16_t year) {
void bank_card_set_exp_date(BankCard* bank_card, uint8_t mon, uint8_t year) {
furi_assert(bank_card);
char exp_date_str[16];
snprintf(exp_date_str, sizeof(exp_date_str), "Exp: %02d/%02d", mon, year % 100);
snprintf(exp_date_str, sizeof(exp_date_str), "Exp: %02X/%02X", mon, year);
widget_add_string_element(
bank_card->widget, 122, 54, AlignRight, AlignBottom, FontSecondary, exp_date_str);
}

2
applications/nfc/views/bank_card.h
View File

@@ -18,6 +18,6 @@ void bank_card_set_name(BankCard* bank_card, char* name);
void bank_card_set_number(BankCard* bank_card, uint8_t* number);
void bank_card_set_exp_date(BankCard* bank_card, uint8_t mon, uint16_t year);
void bank_card_set_exp_date(BankCard* bank_card, uint8_t mon, uint8_t year);
void bank_card_set_cardholder_name(BankCard* bank_card, char* name);

9
lib/nfc_protocols/emv_decoder.c
View File

@@ -214,13 +214,18 @@ uint16_t emv_prepare_read_sfi_record(uint8_t* dest, uint8_t sfi, uint8_t record_
}
bool emv_decode_read_sfi_record(uint8_t* buff, uint16_t len, EmvApplication* app) {
bool pan_parsed = false;
for(uint16_t i = 0; i < len; i++) {
if(buff[i] == EMV_TAG_PAN) {
memcpy(app->card_number, &buff[i + 2], 8);
return true;
pan_parsed = true;
} else if((buff[i] << 8 | buff[i + 1]) == EMV_TAG_EXP_DATE) {
i += 3;
app->exp_year = buff[i++];
app->exp_month = buff[i++];
}
}
return false;
return pan_parsed;
}
uint16_t emv_select_ppse_ans(uint8_t* buff) {

5
lib/nfc_protocols/emv_decoder.h
View File

@@ -16,6 +16,8 @@
#define EMV_TAG_CARD_NUM 0x57
#define EMV_TAG_PAN 0x5A
#define EMV_TAG_AFL 0x94
#define EMV_TAG_EXP_DATE 0x5F24
#define EMV_TAG_CARDHOLDER_NAME 0x5F20
typedef struct {
uint16_t tag;
@@ -35,6 +37,9 @@ typedef struct {
uint8_t aid_len;
char name[32];
uint8_t card_number[8];
uint8_t exp_month;
uint8_t exp_year;
char crdholder_name[32];
APDU pdol;
APDU afl;
} EmvApplication;