#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;
// #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;
// 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)
{
- // This function contains the tag emulation
-
- // 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
-// static const uint8_t response1[] = { 0x44, 0x00 }; // Says: I am a ULTRALITE Tag, 0wn me
-
- // UID response
- // static const uint8_t cmd2[] = { 0x93, 0x20 };
- //static const uint8_t response2[] = { 0x9a, 0xe5, 0xe4, 0x43, 0xd8 }; // original value - greg
+ // Enable and clear the trace
+ tracing = TRUE;
+ traceLen = 0;
+ memset(trace, 0x44, TRACE_SIZE);
-// my desfire
- static const uint8_t response2[] = { 0x88, 0x04, 0x21, 0x3f, 0x4d }; // known uid - note cascade (0x88), 2nd byte (0x04) = NXP/Phillips
+ // 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;
+ }
-// 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]);
+ // Calculate the BitCountCheck (BCC) for the first 4 bytes of the UID.
+ response2[4] = response2[0] ^ response2[1] ^ response2[2] ^ response2[3];
-// 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
-// NOTE : THE CRC on the above may be wrong as I have obfuscated the actual UID
+ // 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]);
-// 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]);
+ // 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]);
- static const uint8_t response5[] = { 0x00, 0x00, 0x00, 0x00 }; // Very random tag nonce
+ uint8_t response5[] = { 0x00, 0x00, 0x00, 0x00 }; // Very random tag nonce
+ uint8_t response6[] = { 0x03, 0x3B, 0x00, 0x00, 0x00 }; // dummy ATS (pseudo-ATR), answer to RATS
+ ComputeCrc14443(CRC_14443_A, response6, 3, &response6[3], &response6[4]);
- uint8_t *resp;
- int respLen;
+ 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
// 166 bytes, since every bit that needs to be send costs us a byte
//
- // Respond with card type
- uint8_t *resp1 = (((uint8_t *)BigBuf) + 800);
- int resp1Len;
+ // Respond with card type
+ uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);
+ int resp1Len;
- // Anticollision cascade1 - respond with uid
- uint8_t *resp2 = (((uint8_t *)BigBuf) + 970);
- int resp2Len;
+ // Anticollision cascade1 - respond with uid
+ uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 166);
+ int resp2Len;
- // Anticollision cascade2 - respond with 2nd half of uid if asked
- // we're only going to be asked if we set the 1st byte of the UID (during cascade1) to 0x88
- uint8_t *resp2a = (((uint8_t *)BigBuf) + 1140);
- int resp2aLen;
+ // Anticollision cascade2 - respond with 2nd half of uid if asked
+ // we're only going to be asked if we set the 1st byte of the UID (during cascade1) to 0x88
+ uint8_t *resp2a = (((uint8_t *)BigBuf) + 1140);
+ int resp2aLen;
- // Acknowledge select - cascade 1
- uint8_t *resp3 = (((uint8_t *)BigBuf) + 1310);
- int resp3Len;
+ // Acknowledge select - cascade 1
+ uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*2));
+ int resp3Len;
- // Acknowledge select - cascade 2
- uint8_t *resp3a = (((uint8_t *)BigBuf) + 1480);
- int resp3aLen;
+ // Acknowledge select - cascade 2
+ 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);
- int resp4Len;
+ // Response to a read request - not implemented atm
+ uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*4));
+ int resp4Len;
- // Authenticate response - nonce
- uint8_t *resp5 = (((uint8_t *)BigBuf) + 1720);
- int resp5Len;
+ // Authenticate response - nonce
+ uint8_t *resp5 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*5));
+ int resp5Len;
- uint8_t *receivedCmd = (uint8_t *)BigBuf;
- int len;
+ // Authenticate response - nonce
+ uint8_t *resp6 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*6));
+ int resp6Len;
- //int i;
- //int u;
- //uint8_t b;
+ uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
+ int len;
// 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;
-
- 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
// Answer to request
CodeIso14443aAsTag(response1, sizeof(response1));
- memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax;
+ memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax;
// Send our UID (cascade 1)
CodeIso14443aAsTag(response2, sizeof(response2));
- memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax;
+ memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax;
// Answer to select (cascade1)
CodeIso14443aAsTag(response3, sizeof(response3));
- memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax;
+ memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax;
// Send the cascade 2 2nd part of the uid
CodeIso14443aAsTag(response2a, sizeof(response2a));
- memcpy(resp2a, ToSend, ToSendMax); resp2aLen = ToSendMax;
+ memcpy(resp2a, ToSend, ToSendMax); resp2aLen = ToSendMax;
// Answer to select (cascade 2)
CodeIso14443aAsTag(response3a, sizeof(response3a));
- memcpy(resp3a, ToSend, ToSendMax); resp3aLen = ToSendMax;
+ memcpy(resp3a, ToSend, ToSendMax); resp3aLen = ToSendMax;
// Strange answer is an example of rare message size (3 bits)
CodeStrangeAnswerAsTag();
// Authentication answer (random nonce)
CodeIso14443aAsTag(response5, sizeof(response5));
- memcpy(resp5, ToSend, ToSendMax); resp5Len = ToSendMax;
+ memcpy(resp5, ToSend, ToSendMax); resp5Len = ToSendMax;
- // We need to listen to the high-frequency, peak-detected path.
- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
- FpgaSetupSsc();
+ // dummy ATS (pseudo-ATR), answer to RATS
+ CodeIso14443aAsTag(response6, sizeof(response6));
+ memcpy(resp6, ToSend, ToSendMax); resp6Len = ToSendMax;
+
+ // We need to listen to the high-frequency, peak-detected path.
+ SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+ FpgaSetupSsc();
- cmdsRecvd = 0;
+ cmdsRecvd = 0;
- LED_A_ON();
+ LED_A_ON();
for(;;) {
-
- if(!GetIso14443aCommandFromReader(receivedCmd, &len, 100)) {
- 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
- if(receivedCmd[0] == 0x26) {
- // Received a REQUEST
+
+ 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;
+ if(receivedCmd[0] == 0x26) { // Received a REQUEST
resp = resp1; respLen = resp1Len; order = 1;
- //DbpString("Hello request from reader:");
- } else if(receivedCmd[0] == 0x52) {
- // Received a WAKEUP
+ respdata = response1;
+ respsize = sizeof(response1);
+ } else if(receivedCmd[0] == 0x52) { // Received a WAKEUP
resp = resp1; respLen = resp1Len; order = 6;
-// //DbpString("Wakeup request from reader:");
-
- } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) { // greg - cascade 1 anti-collision
- // Received request for UID (cascade 1)
+ respdata = response1;
+ respsize = sizeof(response1);
+ } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) { // 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]);
-
-
- } else if(receivedCmd[1] == 0x20 && receivedCmd[0] ==0x95) { // greg - cascade 2 anti-collision
- // Received request for UID (cascade 2)
+ respdata = response2;
+ respsize = sizeof(response2);
+ } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x95) { // 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]);
-
-
- } else if(receivedCmd[1] == 0x70 && receivedCmd[0] ==0x93) { // greg - cascade 1 select
- // Received a SELECT
+ respdata = response2a;
+ respsize = sizeof(response2a);
+ } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x93) { // Received a SELECT (cascade 1)
resp = resp3; respLen = resp3Len; order = 3;
-// DbpString("Select (cascade 1) request from reader:");
-// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
-
- } else if(receivedCmd[1] == 0x70 && receivedCmd[0] ==0x95) { // greg - cascade 2 select
- // Received a SELECT
+ respdata = response3;
+ respsize = sizeof(response3);
+ } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x95) { // Received a SELECT (cascade 2)
resp = resp3a; respLen = resp3aLen; order = 30;
-// DbpString("Select (cascade 2) request from reader:");
-// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
-
- } else if(receivedCmd[0] == 0x30) {
- // Received a READ
+ respdata = response3a;
+ respsize = sizeof(response3a);
+ } else if(receivedCmd[0] == 0x30) { // Received a (plain) READ
resp = resp4; respLen = resp4Len; order = 4; // Do nothing
- Dbprintf("Read request from reader: %x %x %x",
- receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
-
- } else if(receivedCmd[0] == 0x50) {
- // Received a HALT
- resp = resp1; respLen = 0; order = 5; // Do nothing
+ Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]);
+ respdata = &nack;
+ respsize = sizeof(nack); // 4-bit answer
+ } else if(receivedCmd[0] == 0x50) { // Received a HALT
DbpString("Reader requested we HALT!:");
-
- } else if(receivedCmd[0] == 0x60) {
- // Received an authentication request
+ // Do not respond
+ resp = resp1; respLen = 0; order = 0;
+ respdata = NULL;
+ respsize = 0;
+ } else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { // Received an authentication request
resp = resp5; respLen = resp5Len; order = 7;
- Dbprintf("Authenticate request from reader: %x %x %x",
- receivedCmd[0], receivedCmd[1], receivedCmd[2]);
-
- } 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 = response5;
+ respsize = sizeof(response5);
+ } else if(receivedCmd[0] == 0xE0) { // Received a RATS request
+ resp = resp6; respLen = resp6Len; order = 70;
+ respdata = response6;
+ respsize = sizeof(response6);
+ } else {
+ // Never seen this command before
+ Dbprintf("Received (len=%d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",
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++; }
//i = 0;
}
- memset(receivedCmd, 0x44, 32);
-
if(cmdsRecvd > 999) {
DbpString("1000 commands later...");
- break;
- }
- else {
+ break;
+ } else {
cmdsRecvd++;
}
- if(respLen <= 0) continue;
- //----------------------------
- //u = 0;
- //b = 0x00;
- //fdt_indicator = FALSE;
-
- EmSendCmd14443aRaw(resp, respLen, receivedCmd[0] == 0x52);
-/* // Modulate Manchester
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD);
- AT91C_BASE_SSC->SSC_THR = 0x00;
- FpgaSetupSsc();
-
- // ### Transmit the response ###
- u = 0;
- b = 0x00;
- fdt_indicator = FALSE;
- for(;;) {
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
- volatile uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
- (void)b;
- }
- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
- if(i > respLen) {
- b = 0x00;
- u++;
- } else {
- b = resp[i];
- i++;
- }
- AT91C_BASE_SSC->SSC_THR = b;
-
- if(u > 4) {
- break;
- }
- }
- if(BUTTON_PRESS()) {
- break;
+ if(respLen > 0) {
+ 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;
+ }
+ }
+
+ memset(receivedCmd, 0x44, RECV_CMD_SIZE);
+ }
Dbprintf("%x %x %x", happened, happened2, cmdsRecvd);
LED_A_OFF();
{
if ( (parameter != 0) && (memcmp(nt, nt_noattack, 4) == 0) ) continue;
- isNULL = (nt_attacked[0] == 0) && (nt_attacked[1] == 0) && (nt_attacked[2] == 0) && (nt_attacked[3] == 0);
+ isNULL = !(nt_attacked[0] == 0) && (nt_attacked[1] == 0) && (nt_attacked[2] == 0) && (nt_attacked[3] == 0);
if ( (isNULL != 0 ) && (memcmp(nt, nt_attacked, 4) != 0) ) continue;
if (nt_diff == 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();
projects / proxmark3-svn / blobdiff