github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-14 18:48:13 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

add ehanced contactless polling to 14a reader/raw commands

Browse source
This commit is contained in:
iceman1001 2021-10-17 11:38:37 +02:00
commit 37b89c7b11
5 changed files with 35 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

23
armsrc/iso14443a.c
View file

@ -2427,11 +2427,12 @@ static void iso14a_set_ATS_times(uint8_t *ats) {
}
}
static int GetATQA(uint8_t *resp, uint8_t *resp_par) {
static int GetATQA(uint8_t *resp, uint8_t *resp_par, bool use_ecp) {
#define ECP_DELAY 1000
#define WUPA_RETRY_TIMEOUT 10 // 10ms
uint8_t wupa[] = { ISO14443A_CMD_WUPA }; // 0x26 - REQA 0x52 - WAKE-UP
uint8_t wupa[] = { ISO14443A_CMD_WUPA }; // 0x26 - REQA 0x52 - WAKE-UP
uint32_t save_iso14a_timeout = iso14a_get_timeout();
iso14a_set_timeout(1236 / 128 + 1); // response to WUPA is expected at exactly 1236/fc. No need to wait longer.
@ -2440,6 +2441,12 @@ static int GetATQA(uint8_t *resp, uint8_t *resp_par) {
// we may need several tries if we did send an unknown command or a wrong authentication before...
do {
if (use_ecp) {
uint8_t ecp[] = { 0x6a, 0x02, 0xC8, 0x01, 0x00, 0x03, 0x00, 0x02, 0x79, 0x00, 0x00, 0x00, 0x00, 0xC2, 0xD8};
ReaderTransmit(ecp, sizeof(ecp), NULL);
SpinDelay(ECP_DELAY);
}
// Broadcast for a card, WUPA (0x52) will force response from all cards in the field
ReaderTransmitBitsPar(wupa, 7, NULL, NULL);
// Receive the ATQA
@ -2450,13 +2457,17 @@ static int GetATQA(uint8_t *resp, uint8_t *resp_par) {
return len;
}
int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *p_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades, bool no_rats) {
return iso14443a_select_cardEx(uid_ptr, p_card, cuid_ptr, anticollision, num_cascades, no_rats, false);
}
// performs iso14443a anticollision (optional) and card select procedure
// fills the uid and cuid pointer unless NULL
// fills the card info record unless NULL
// if anticollision is false, then the UID must be provided in uid_ptr[]
// and num_cascades must be set (1: 4 Byte UID, 2: 7 Byte UID, 3: 10 Byte UID)
// requests ATS unless no_rats is true
int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *p_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades, bool no_rats) {
int iso14443a_select_cardEx(uint8_t *uid_ptr, iso14a_card_select_t *p_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades, bool no_rats, bool use_ecp) {
uint8_t resp[MAX_FRAME_SIZE] = {0}; // theoretically. A usual RATS will be much smaller
uint8_t resp_par[MAX_PARITY_SIZE] = {0};
@ -2471,7 +2482,7 @@ int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *p_card, uint32
p_card->ats_len = 0;
}
if (!GetATQA(resp, resp_par)) {
if (!GetATQA(resp, resp_par, use_ecp)) {
return 0;
}
@ -2669,7 +2680,7 @@ int iso14443a_fast_select_card(uint8_t *uid_ptr, uint8_t num_cascades) {
uint8_t sak = 0x04; // cascade uid
int cascade_level = 0;
if (!GetATQA(resp, resp_par)) {
if (!GetATQA(resp, resp_par, false)) {
return 0;
}
@ -2878,7 +2889,7 @@ void ReaderIso14443a(PacketCommandNG *c) {
// if failed selecting, turn off antenna and quite.
if (!(param & ISO14A_NO_SELECT)) {
iso14a_card_select_t *card = (iso14a_card_select_t *)buf;
arg0 = iso14443a_select_card(NULL, card, NULL, true, 0, param & ISO14A_NO_RATS);
arg0 = iso14443a_select_cardEx(NULL, card, NULL, true, 0, (param & ISO14A_NO_RATS), (param & ISO14A_USE_ECP));
FpgaDisableTracing();
reply_mix(CMD_ACK, arg0, card->uidlen, 0, buf, sizeof(iso14a_card_select_t));

1
armsrc/iso14443a.h
View file

@ -142,6 +142,7 @@ int ReaderReceive(uint8_t *receivedAnswer, uint8_t *par);
void iso14443a_setup(uint8_t fpga_minor_mode);
int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, bool send_chaining, void *data, uint8_t *res);
int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *p_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades, bool no_rats);
int iso14443a_select_cardEx(uint8_t *uid_ptr, iso14a_card_select_t *p_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades, bool no_rats, bool use_ecp);
int iso14443a_fast_select_card(uint8_t *uid_ptr, uint8_t num_cascades);
void iso14a_set_trigger(bool enable);