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ADD: Started a "collect nonces" concept to be able to analyse the tag generated nonces.

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iceman1001 2015-04-24 18:41:49 +02:00
commit add0504dea
6 changed files with 81 additions and 5 deletions
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70
armsrc/mifarecmd.c
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@ -1218,7 +1218,75 @@ void MifareCIdent(){
cmd_send(CMD_ACK,isOK,0,0,0,0);
}
//
void MifareCollectNonces(uint32_t arg0, uint32_t arg1){
BigBuf_free();
uint32_t iterations = arg0;
uint8_t uid[10] = {0x00};
uint8_t *response = BigBuf_malloc(MAX_MIFARE_FRAME_SIZE);
uint8_t *responsePar = BigBuf_malloc(MAX_MIFARE_PARITY_SIZE);
uint8_t mf_auth[] = { 0x60,0x00,0xf5,0x7b };
// get memory from BigBuf.
uint8_t *nonces = BigBuf_malloc(iterations * 4);
LED_A_ON();
LED_B_OFF();
LED_C_OFF();
clear_trace();
set_tracing(TRUE);
iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);
for (int i = 0; i < iterations; i++) {
WDT_HIT();
// Test if the action was cancelled
if(BUTTON_PRESS()) break;
// if(mifare_classic_halt(pcs, cuid)) {
// if (MF_DBGLEVEL >= 1) Dbprintf("Halt error");
//}
if(!iso14443a_select_card(uid, NULL, NULL)) {
if (MF_DBGLEVEL >= 1) Dbprintf("Can't select card");
continue;
};
// Transmit MIFARE_CLASSIC_AUTH.
ReaderTransmit(mf_auth, sizeof(mf_auth), NULL);
// Receive the (4 Byte) "random" nonce
if (!ReaderReceive(response, responsePar)) {
if (MF_DBGLEVEL >= 1) Dbprintf("Couldn't receive tag nonce");
continue;
}
nonces[i*4] = bytes_to_num(response, 4);
}
int packLen = iterations * 4;
int packSize = 0;
int packNum = 0;
while (packLen > 0) {
packSize = MIN(USB_CMD_DATA_SIZE, packLen);
LED_B_ON();
cmd_send(CMD_ACK, 77, 0, packSize, nonces - packLen, packSize);
LED_B_OFF();
packLen -= packSize;
packNum++;
}
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LEDsoff();
}
//
// DESFIRE
//