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fpga iclass

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This commit is contained in:
iceman1001 2020-07-07 13:18:53 +02:00
commit b775b68e4e
5 changed files with 37 additions and 35 deletions
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53
armsrc/iclass.c
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@ -56,9 +56,6 @@
#include "ticks.h"
#include "iso15693.h"
static int SendIClassAnswer(uint8_t *resp, int respLen, uint16_t delay);
int doIClassSimulation(int simulationMode, uint8_t *reader_mac_buf);
// The length of a received command will in most cases be no more than 18 bytes.
// we expect max 34 bytes as tag answer (response to READ4)
#ifndef ICLASS_BUFFER_SIZE
@ -808,7 +805,7 @@ static bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint
* @return false = fail
* true = Got all.
*/
static bool selectIclassTag(uint8_t *card_data, bool use_credit_key, uint32_t *eof_time) {
static bool select_iclass_tag(uint8_t *card_data, bool use_credit_key, uint32_t *eof_time) {
static uint8_t act_all[] = { ICLASS_CMD_ACTALL };
static uint8_t identify[] = { ICLASS_CMD_READ_OR_IDENTIFY, 0x00, 0x73, 0x33 };
@ -909,7 +906,7 @@ void ReaderIClass(uint8_t flags) {
uint32_t start_time = 0;
uint32_t eof_time = 0;
int read_status = selectIclassTag(card_data, use_credit_key, &eof_time);
int read_status = select_iclass_tag(card_data, use_credit_key, &eof_time);
if (read_status == 0) {
reply_mix(CMD_ACK, 0xFF, 0, 0, card_data, 0);
switch_off();
@ -973,8 +970,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *mac) {
uint8_t card_data[PM3_CMD_DATA_SIZE] = {0};
uint8_t resp[ICLASS_BUFFER_SIZE] = {0};
uint32_t start_time = 0;
uint32_t eof_time = 0;
bool use_credit_key = false;
static struct memory_t {
int k16;
@ -984,12 +980,14 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *mac) {
int keyaccess;
} memory;
while (!BUTTON_PRESS()) {
uint32_t start_time = 0;
uint32_t eof_time = 0;
while (BUTTON_PRESS() == false) {
WDT_HIT();
uint8_t read_status = handshakeIclassTag(card_data);
if (read_status < 2) continue;
bool read_status = select_iclass_tag(card_data, use_credit_key, &eof_time);
if (read_status == false) continue;
//for now replay captured auth (as cc not updated)
memcpy(check + 5, mac, 4);
@ -1130,7 +1128,6 @@ typedef struct iclass_premac {
void iClass_Authentication_fast(uint64_t arg0, uint64_t arg1, uint8_t *datain) {
uint8_t i = 0, isOK = 0;
uint8_t lastChunk = ((arg0 >> 8) & 0xFF);
bool use_credit_key = ((arg0 >> 16) & 0xFF);
@ -1152,28 +1149,21 @@ void iClass_Authentication_fast(uint64_t arg0, uint64_t arg1, uint8_t *datain) {
switch_off();
SpinDelay(20);
uint16_t checked = 0;
int read_status = 0;
uint8_t startup_limit = 10;
bool read_status = false;
uint32_t start_time = 0;
uint32_t eof_time = 0;
while (read_status != 2) {
uint8_t tries = 10;
while (tries-- > 0 || read_status == false) {
read_status = select_iclass_tag(card_data, use_credit_key, &eof_time);
}
if (checked == 1000) {
if (BUTTON_PRESS() || !data_available()) goto out;
checked = 0;
}
++checked;
// failed to select card 10 times. return fail to client
if (read_status == false)
goto out;
read_status = handshakeIclassTag_ext(card_data, use_credit_key);
if (startup_limit-- == 0) {
Dbprintf("[-] Handshake status | %d (fail 10)", read_status);
isOK = 99;
goto out;
}
};
// since handshakeIclassTag_ext call sends s readcheck, we start with sending first response.
checked = 0;
// since select_iclass_tag call sends s readcheck, we start with sending first response.
uint16_t checked = 0;
// Keychunk loop
for (i = 0; i < keyCount; i++) {
@ -1199,9 +1189,10 @@ void iClass_Authentication_fast(uint64_t arg0, uint64_t arg1, uint8_t *datain) {
if (isOK)
goto out;
start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER;
// Auth Sequence MUST begin with reading e-purse. (block2)
// Card selected, now read e-purse (cc) (block2) (only 8 bytes no CRC)
ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc), &start_time);
LED_B_OFF();
}