#include "crapto1.h"
#include "mifareutil.h"
-static uint8_t *trace = (uint8_t *) BigBuf;
-static int traceLen = 0;
-static int rsamples = 0;
-static int tracing = TRUE;
static uint32_t iso14a_timeout;
+uint8_t *trace = (uint8_t *) BigBuf;
+int traceLen = 0;
+int rsamples = 0;
+int tracing = TRUE;
+uint8_t trigger = 0;
// CARD TO READER - manchester
// Sequence D: 11110000 modulation with subcarrier during first half
#define SEC_Y 0x00
#define SEC_Z 0xc0
-static const uint8_t OddByteParity[256] = {
+const uint8_t OddByteParity[256] = {
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
};
-uint8_t trigger = 0;
+
void iso14a_set_trigger(int enable) {
trigger = enable;
}
ComputeCrc14443(CRC_14443_A,data,len,data+len,data+len+1);
}
+// The function LogTrace() is also used by the iClass implementation in iClass.c
int LogTrace(const uint8_t * btBytes, int iLen, int iSamples, uint32_t dwParity, int bReader)
{
// Return when trace is full
- if (traceLen >= TRACE_LENGTH) return FALSE;
+ if (traceLen >= TRACE_SIZE) return FALSE;
// Trace the random, i'm curious
rsamples += iSamples;
static RAMFUNC int MillerDecoding(int bit)
{
- int error = 0;
+ //int error = 0;
int bitright;
if(!Uart.bitBuffer) {
// measured a drop in first and second half
// which should not be possible
Uart.state = STATE_ERROR_WAIT;
- error = 0x01;
+ //error = 0x01;
}
Uart.posCnt = 0;
if(Uart.drop == DROP_SECOND_HALF) {
// error, should not happen in SOC
Uart.state = STATE_ERROR_WAIT;
- error = 0x02;
+ //error = 0x02;
}
else {
// correct SOC
// Would be STATE_MILLER_Z
// but Z does not follow X, so error
Uart.state = STATE_ERROR_WAIT;
- error = 0x03;
+ //error = 0x03;
}
if(Uart.drop == DROP_SECOND_HALF) {
// We see a '1' and stay in state X
Uart.bitCnt = 0;
Uart.byteCnt = 0;
Uart.parityBits = 0;
- error = 0;
+ //error = 0;
}
else {
Uart.highCnt = 0;
{
int bit;
int modulation;
- int error = 0;
+ //int error = 0;
if(!Demod.buff) {
Demod.buff = 1;
case 0x01: Demod.samples = 0; break;
}
}
- error = 0;
+ //error = 0;
}
}
else {
if(Demod.state!=DEMOD_ERROR_WAIT) {
Demod.state = DEMOD_ERROR_WAIT;
Demod.output[Demod.len] = 0xaa;
- error = 0x01;
+ //error = 0x01;
}
}
else if(modulation) {
else {
Demod.output[Demod.len] = 0xab;
Demod.state = DEMOD_ERROR_WAIT;
- error = 0x02;
+ //error = 0x02;
}
break;
else {
Demod.output[Demod.len] = 0xad;
Demod.state = DEMOD_ERROR_WAIT;
- error = 0x03;
+ //error = 0x03;
}
break;
// #define RECV_RES_OFFSET 2096 // original (working as of 21/2/09) values
// #define DMA_BUFFER_OFFSET 2160 // original (working as of 21/2/09) values
// #define DMA_BUFFER_SIZE 4096 // original (working as of 21/2/09) values
-// #define TRACE_LENGTH 2000 // original (working as of 21/2/09) values
+// #define TRACE_SIZE 2000 // original (working as of 21/2/09) values
// We won't start recording the frames that we acquire until we trigger;
// a good trigger condition to get started is probably when we see a
int samples = 0;
int rsamples = 0;
- memset(trace, 0x44, RECV_CMD_OFFSET);
+ memset(trace, 0x44, TRACE_SIZE);
// Set up the demodulator for tag -> reader responses.
Demod.output = receivedResponse;
trace[traceLen++] = Uart.byteCnt;
memcpy(trace+traceLen, receivedCmd, Uart.byteCnt);
traceLen += Uart.byteCnt;
- if(traceLen > TRACE_LENGTH) break;
+ if(traceLen > TRACE_SIZE) break;
}
/* And ready to receive another command. */
Uart.state = STATE_UNSYNCD;
trace[traceLen++] = Demod.len;
memcpy(trace+traceLen, receivedResponse, Demod.len);
traceLen += Demod.len;
- if(traceLen > TRACE_LENGTH) break;
+ if(traceLen > TRACE_SIZE) break;
triggered = TRUE;
DbpString("COMMAND FINISHED");
- Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);
- Dbprintf("%x %x %x", Uart.byteCntMax, traceLen, (int)Uart.output[0]);
-
done:
AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;
- Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);
- Dbprintf("%x %x %x", Uart.byteCntMax, traceLen, (int)Uart.output[0]);
+ Dbprintf("maxBehindBy=%x, Uart.state=%x, Uart.byteCnt=%x", maxBehindBy, Uart.state, Uart.byteCnt);
+ Dbprintf("Uart.byteCntMax=%x, traceLen=%x, Uart.output[0]=%x", Uart.byteCntMax, traceLen, (int)Uart.output[0]);
LED_A_OFF();
LED_B_OFF();
LED_C_OFF();
// Main loop of simulated tag: receive commands from reader, decide what
// response to send, and send it.
//-----------------------------------------------------------------------------
-void SimulateIso14443aTag(int tagType, int TagUid)
+void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd)
{
+ // Enable and clear the trace
+ tracing = TRUE;
+ traceLen = 0;
+ memset(trace, 0x44, TRACE_SIZE);
+
// This function contains the tag emulation
+ uint8_t sak;
+
+ // The first response contains the ATQA (note: bytes are transmitted in reverse order).
+ uint8_t response1[2];
+
+ switch (tagType) {
+ case 1: { // MIFARE Classic
+ // Says: I am Mifare 1k - original line
+ response1[0] = 0x04;
+ response1[1] = 0x00;
+ sak = 0x08;
+ } break;
+ case 2: { // MIFARE Ultralight
+ // Says: I am a stupid memory tag, no crypto
+ response1[0] = 0x04;
+ response1[1] = 0x00;
+ sak = 0x00;
+ } break;
+ case 3: { // MIFARE DESFire
+ // Says: I am a DESFire tag, ph33r me
+ response1[0] = 0x04;
+ response1[1] = 0x03;
+ sak = 0x20;
+ } break;
+ case 4: { // ISO/IEC 14443-4
+ // Says: I am a javacard (JCOP)
+ response1[0] = 0x04;
+ response1[1] = 0x00;
+ sak = 0x28;
+ } break;
+ default: {
+ Dbprintf("Error: unkown tagtype (%d)",tagType);
+ return;
+ } break;
+ }
+
+ // The second response contains the (mandatory) first 24 bits of the UID
+ uint8_t response2[5];
+
+ // Check if the uid uses the (optional) part
+ uint8_t response2a[5];
+ if (uid_2nd) {
+ response2[0] = 0x88;
+ num_to_bytes(uid_1st,3,response2+1);
+ num_to_bytes(uid_2nd,4,response2a);
+ response2a[4] = response2a[0] ^ response2a[1] ^ response2a[2] ^ response2a[3];
+
+ // Configure the ATQA and SAK accordingly
+ response1[0] |= 0x40;
+ sak |= 0x04;
+ } else {
+ num_to_bytes(uid_1st,4,response2);
+ // Configure the ATQA and SAK accordingly
+ response1[0] &= 0xBF;
+ sak &= 0xFB;
+ }
+
+ // Calculate the BitCountCheck (BCC) for the first 4 bytes of the UID.
+ response2[4] = response2[0] ^ response2[1] ^ response2[2] ^ response2[3];
+
+ // Prepare the mandatory SAK (for 4 and 7 byte UID)
+ uint8_t response3[3];
+ response3[0] = sak;
+ ComputeCrc14443(CRC_14443_A, response3, 1, &response3[1], &response3[2]);
+
+ // Prepare the optional second SAK (for 7 byte UID), drop the cascade bit
+ uint8_t response3a[3];
+ response3a[0] = sak & 0xFB;
+ ComputeCrc14443(CRC_14443_A, response3a, 1, &response3a[1], &response3a[2]);
+
+
+/*
+ // Check if the uid uses the (optional) second part
+ if (uid_2nd) {
+ // Configure the ATQA and SAK accordingly
+ response1[0] |= 0x40;
+ sak |= 0x04;
+ }
+*/
+
+//static const uint8_t response2a[] = { 0x51, 0x48, 0x1d, 0x80, 0x84 }; // uid - cascade2 - 2nd half (4 bytes) of UID+ BCCheck
+
// Prepare protocol messages
// static const uint8_t cmd1[] = { 0x26 };
// static const uint8_t response1[] = { 0x02, 0x00 }; // Says: I am Mifare 4k - original line - greg
//
- static const uint8_t response1[] = { 0x44, 0x03 }; // Says: I am a DESFire Tag, ph33r me
+// uint8_t response1[] = { 0x44, 0x03 }; // Says: I am a DESFire Tag, ph33r me
// static const uint8_t response1[] = { 0x44, 0x00 }; // Says: I am a ULTRALITE Tag, 0wn me
// UID response
//static const uint8_t response2[] = { 0x9a, 0xe5, 0xe4, 0x43, 0xd8 }; // original value - greg
// my desfire
- static const uint8_t response2[] = { 0x88, 0x04, 0x21, 0x3f, 0x4d }; // known uid - note cascade (0x88), 2nd byte (0x04) = NXP/Phillips
+// uint8_t response2[] = { 0x88, 0x04, 0x21, 0x3f, 0x4d }; // known uid - note cascade (0x88), 2nd byte (0x04) = NXP/Phillips
// When reader selects us during cascade1 it will send cmd3
//uint8_t response3[] = { 0x04, 0x00, 0x00 }; // SAK Select (cascade1) successful response (ULTRALITE)
-uint8_t response3[] = { 0x24, 0x00, 0x00 }; // SAK Select (cascade1) successful response (DESFire)
-ComputeCrc14443(CRC_14443_A, response3, 1, &response3[1], &response3[2]);
+//uint8_t response3[] = { 0x24, 0x00, 0x00 }; // SAK Select (cascade1) successful response (DESFire)
+//ComputeCrc14443(CRC_14443_A, response3, 1, &response3[1], &response3[2]);
// send cascade2 2nd half of UID
-static const uint8_t response2a[] = { 0x51, 0x48, 0x1d, 0x80, 0x84 }; // uid - cascade2 - 2nd half (4 bytes) of UID+ BCCheck
+//static const uint8_t response2a[] = { 0x51, 0x48, 0x1d, 0x80, 0x84 }; // uid - cascade2 - 2nd half (4 bytes) of UID+ BCCheck
// NOTE : THE CRC on the above may be wrong as I have obfuscated the actual UID
// When reader selects us during cascade2 it will send cmd3a
//uint8_t response3a[] = { 0x00, 0x00, 0x00 }; // SAK Select (cascade2) successful response (ULTRALITE)
-uint8_t response3a[] = { 0x20, 0x00, 0x00 }; // SAK Select (cascade2) successful response (DESFire)
-ComputeCrc14443(CRC_14443_A, response3a, 1, &response3a[1], &response3a[2]);
+//uint8_t response3a[] = { 0x20, 0x00, 0x00 }; // SAK Select (cascade2) successful response (DESFire)
+//ComputeCrc14443(CRC_14443_A, response3a, 1, &response3a[1], &response3a[2]);
static const uint8_t response5[] = { 0x00, 0x00, 0x00, 0x00 }; // Very random tag nonce
uint8_t *resp;
int respLen;
- // Longest possible response will be 16 bytes + 2 CRC = 18 bytes
+ // Longest possible response will be 16 bytes + 2 CRC = 18 bytes
// This will need
// 144 data bits (18 * 8)
// 18 parity bits
//
// Respond with card type
- uint8_t *resp1 = (((uint8_t *)BigBuf) + 800);
+ uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);
int resp1Len;
// Anticollision cascade1 - respond with uid
- uint8_t *resp2 = (((uint8_t *)BigBuf) + 970);
+ uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 166);
int resp2Len;
// Anticollision cascade2 - respond with 2nd half of uid if asked
int resp2aLen;
// Acknowledge select - cascade 1
- uint8_t *resp3 = (((uint8_t *)BigBuf) + 1310);
+ uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*2));
int resp3Len;
// Acknowledge select - cascade 2
- uint8_t *resp3a = (((uint8_t *)BigBuf) + 1480);
+ uint8_t *resp3a = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*3));
int resp3aLen;
// Response to a read request - not implemented atm
- uint8_t *resp4 = (((uint8_t *)BigBuf) + 1550);
+ uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*4));
int resp4Len;
// Authenticate response - nonce
- uint8_t *resp5 = (((uint8_t *)BigBuf) + 1720);
+ uint8_t *resp5 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*5));
int resp5Len;
- uint8_t *receivedCmd = (uint8_t *)BigBuf;
+ uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
+// uint8_t *receivedCmd = (uint8_t *)BigBuf;
int len;
- int i;
- int u;
- uint8_t b;
+ //int i;
+ //int u;
+ //uint8_t b;
// To control where we are in the protocol
int order = 0;
int happened = 0;
int happened2 = 0;
- int cmdsRecvd = 0;
+ int cmdsRecvd = 0;
+ uint8_t* respdata = NULL;
+ int respsize = 0;
+ uint8_t nack = 0x04;
- int fdt_indicator;
+ //int fdt_indicator;
- memset(receivedCmd, 0x44, 400);
+ memset(receivedCmd, 0x44, RECV_CMD_SIZE);
// Prepare the responses of the anticollision phase
// there will be not enough time to do this at the moment the reader sends it REQA
LED_A_ON();
for(;;) {
- if(!GetIso14443aCommandFromReader(receivedCmd, &len, 100)) {
+ if(!GetIso14443aCommandFromReader(receivedCmd, &len, RECV_CMD_SIZE)) {
DbpString("button press");
break;
}
// doob - added loads of debug strings so we can see what the reader is saying to us during the sim as hi14alist is not populated
// Okay, look at the command now.
lastorder = order;
- i = 1; // first byte transmitted
+ //i = 1; // first byte transmitted
if(receivedCmd[0] == 0x26) {
// Received a REQUEST
resp = resp1; respLen = resp1Len; order = 1;
+ respdata = response1;
+ respsize = sizeof(response1);
//DbpString("Hello request from reader:");
} else if(receivedCmd[0] == 0x52) {
// Received a WAKEUP
resp = resp1; respLen = resp1Len; order = 6;
// //DbpString("Wakeup request from reader:");
-
+ respdata = response1;
+ respsize = sizeof(response1);
} else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) { // greg - cascade 1 anti-collision
// Received request for UID (cascade 1)
resp = resp2; respLen = resp2Len; order = 2;
// DbpString("UID (cascade 1) request from reader:");
// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
-
+ respdata = response2;
+ respsize = sizeof(response2);
} else if(receivedCmd[1] == 0x20 && receivedCmd[0] ==0x95) { // greg - cascade 2 anti-collision
// Received request for UID (cascade 2)
resp = resp2a; respLen = resp2aLen; order = 20;
// DbpString("UID (cascade 2) request from reader:");
// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
+ respdata = response2a;
+ respsize = sizeof(response2a);
} else if(receivedCmd[1] == 0x70 && receivedCmd[0] ==0x93) { // greg - cascade 1 select
// Received a SELECT
resp = resp3; respLen = resp3Len; order = 3;
// DbpString("Select (cascade 1) request from reader:");
// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
+ respdata = response3;
+ respsize = sizeof(response3);
} else if(receivedCmd[1] == 0x70 && receivedCmd[0] ==0x95) { // greg - cascade 2 select
// Received a SELECT
resp = resp3a; respLen = resp3aLen; order = 30;
// DbpString("Select (cascade 2) request from reader:");
// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
+ respdata = response3a;
+ respsize = sizeof(response3a);
} else if(receivedCmd[0] == 0x30) {
// Received a READ
resp = resp4; respLen = resp4Len; order = 4; // Do nothing
Dbprintf("Read request from reader: %x %x %x",
receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
+ respdata = &nack;
+ respsize = sizeof(nack); // 4-bit answer
} else if(receivedCmd[0] == 0x50) {
// Received a HALT
resp = resp1; respLen = 0; order = 5; // Do nothing
DbpString("Reader requested we HALT!:");
+ respdata = NULL;
+ respsize = 0;
} else if(receivedCmd[0] == 0x60) {
// Received an authentication request
resp = resp5; respLen = resp5Len; order = 7;
Dbprintf("Authenticate request from reader: %x %x %x",
receivedCmd[0], receivedCmd[1], receivedCmd[2]);
+ respdata = NULL;
+ respsize = 0;
} else if(receivedCmd[0] == 0xE0) {
// Received a RATS request
resp = resp1; respLen = 0;order = 70;
Dbprintf("RATS request from reader: %x %x %x",
receivedCmd[0], receivedCmd[1], receivedCmd[2]);
- } else {
- // Never seen this command before
- Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
+ respdata = NULL;
+ respsize = 0;
+ } else {
+ // Never seen this command before
+ Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
len,
receivedCmd[0], receivedCmd[1], receivedCmd[2],
receivedCmd[3], receivedCmd[4], receivedCmd[5],
receivedCmd[6], receivedCmd[7], receivedCmd[8]);
// Do not respond
resp = resp1; respLen = 0; order = 0;
- }
+ respdata = NULL;
+ respsize = 0;
+ }
// Count number of wakeups received after a halt
if(order == 6 && lastorder == 5) { happened++; }
// Look at last parity bit to determine timing of answer
if((Uart.parityBits & 0x01) || receivedCmd[0] == 0x52) {
// 1236, so correction bit needed
- i = 0;
+ //i = 0;
}
- memset(receivedCmd, 0x44, 32);
if(cmdsRecvd > 999) {
DbpString("1000 commands later...");
cmdsRecvd++;
}
- if(respLen <= 0) continue;
- //----------------------------
- u = 0;
- b = 0x00;
- fdt_indicator = FALSE;
+ if(respLen > 0) {
+ //----------------------------
+ //u = 0;
+ //b = 0x00;
+ //fdt_indicator = FALSE;
+ EmSendCmd14443aRaw(resp, respLen, receivedCmd[0] == 0x52);
+ }
+
+ if (tracing) {
+ LogTrace(receivedCmd,len, 0, Uart.parityBits, TRUE);
+ if (respdata != NULL) {
+ LogTrace(respdata,respsize, 0, SwapBits(GetParity(respdata,respsize),respsize), FALSE);
+ }
+ if(traceLen > TRACE_SIZE) {
+ DbpString("Trace full");
+ break;
+ }
+ }
- EmSendCmd14443aRaw(resp, respLen, receivedCmd[0] == 0x52);
+ memset(receivedCmd, 0x44, RECV_CMD_SIZE);
/* // Modulate Manchester
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD);
AT91C_BASE_SSC->SSC_THR = 0x00;
byte_t nt_diff = 0;
LED_A_OFF();
byte_t par = 0;
- byte_t par_mask = 0xff;
+ //byte_t par_mask = 0xff;
byte_t par_low = 0;
int led_on = TRUE;
uint8_t uid[8];
{
LED_A_ON();
memcpy(nt_attacked, nt, 4);
- par_mask = 0xf8;
+ //par_mask = 0xf8;
par_low = par & 0x07;
}
int cardSTATE = MFEMUL_NOFIELD;
int _7BUID = 0;
int vHf = 0; // in mV
- int nextCycleTimeout = 0;
+ //int nextCycleTimeout = 0;
int res;
// uint32_t timer = 0;
uint32_t selTimer = 0;
uint8_t cardWRBL = 0;
uint8_t cardAUTHSC = 0;
uint8_t cardAUTHKEY = 0xff; // no authentication
- uint32_t cardRn = 0;
+ //uint32_t cardRn = 0;
uint32_t cardRr = 0;
uint32_t cuid = 0;
- uint32_t rn_enc = 0;
+ //uint32_t rn_enc = 0;
uint32_t ans = 0;
uint32_t cardINTREG = 0;
uint8_t cardINTBLOCK = 0;
}
if (cardSTATE != MFEMUL_NOFIELD) {
- res = EmGetCmd(receivedCmd, &len, 100); // (+ nextCycleTimeout)
+ res = EmGetCmd(receivedCmd, &len, RECV_CMD_SIZE); // (+ nextCycleTimeout)
if (res == 2) {
cardSTATE = MFEMUL_NOFIELD;
LEDsoff();
if(res) break;
}
- nextCycleTimeout = 0;
+ //nextCycleTimeout = 0;
// if (len) Dbprintf("len:%d cmd: %02x %02x %02x %02x", len, receivedCmd[0], receivedCmd[1], receivedCmd[2], receivedCmd[3]);
case MFEMUL_AUTH1:{
if (len == 8) {
// --- crypto
- rn_enc = bytes_to_num(receivedCmd, 4);
- cardRn = rn_enc ^ crypto1_word(pcs, rn_enc , 1);
+ //rn_enc = bytes_to_num(receivedCmd, 4);
+ //cardRn = rn_enc ^ crypto1_word(pcs, rn_enc , 1);
cardRr = bytes_to_num(&receivedCmd[4], 4) ^ crypto1_word(pcs, 0, 0);
// test if auth OK
if (cardRr != prng_successor(nonce, 64)){
// LogTrace(NULL, 0, GetDeltaCountUS(), 0, true);
cardSTATE = MFEMUL_AUTH1;
- nextCycleTimeout = 10;
+ //nextCycleTimeout = 10;
break;
}
} else {
// --- crypto
cardSTATE = MFEMUL_AUTH1;
- nextCycleTimeout = 10;
+ //nextCycleTimeout = 10;
break;
}
}
break;
}
EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK));
- nextCycleTimeout = 50;
+ //nextCycleTimeout = 50;
cardSTATE = MFEMUL_WRITEBL2;
cardWRBL = receivedCmd[1];
break;
projects / proxmark3-svn / blobdiff