[proxmark3-svn] / client / mifarehost.c

// Merlok, 2011, 2012\r
// people from mifare@nethemba.com, 2010\r
//\r
// This code is licensed to you under the terms of the GNU GPL, version 2 or,\r
// at your option, any later version. See the LICENSE.txt file for the text of\r
// the license.\r
//-----------------------------------------------------------------------------\r
// mifare commands\r
//-----------------------------------------------------------------------------\r
\r
#include <stdio.h>\r
#include <stdlib.h> \r
#include <string.h>\r
#include "mifarehost.h"\r
\r
// MIFARE\r
\r
int compar_int(const void * a, const void * b) {\r
	return (*(uint64_t*)b - *(uint64_t*)a);\r
}\r
\r
// Compare countKeys structure\r
int compar_special_int(const void * a, const void * b) {\r
	return (((countKeys *)b)->count - ((countKeys *)a)->count);\r
}\r
\r
countKeys * uniqsort(uint64_t * possibleKeys, uint32_t size) {\r
	int i, j = 0;\r
	int count = 0;\r
	countKeys *our_counts;\r
	\r
	qsort(possibleKeys, size, sizeof (uint64_t), compar_int);\r
	\r
	our_counts = calloc(size, sizeof(countKeys));\r
	if (our_counts == NULL) {\r
		PrintAndLog("Memory allocation error for our_counts");\r
		return NULL;\r
	}\r
	\r
	for (i = 0; i < size; i++) {\r
        if (possibleKeys[i+1] == possibleKeys[i]) { \r
			count++;\r
		} else {\r
			our_counts[j].key = possibleKeys[i];\r
			our_counts[j].count = count;\r
			j++;\r
			count=0;\r
		}\r
	}\r
	qsort(our_counts, j, sizeof(countKeys), compar_special_int);\r
	return (our_counts);\r
}\r
\r
int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKeys) \r
{\r
	int i, m, len;\r
	uint8_t isEOF;\r
	uint32_t uid;\r
	fnVector * vector = NULL;\r
	countKeys	*ck;\r
	int lenVector = 0;\r
	UsbCommand * resp = NULL;\r
	\r
	memset(resultKeys, 0x00, 16 * 6);\r
\r
	// flush queue\r
	while (WaitForResponseTimeout(CMD_ACK, 500) != NULL) ;\r
	\r
  UsbCommand c = {CMD_MIFARE_NESTED, {blockNo, keyType, trgBlockNo + trgKeyType * 0x100}};\r
	memcpy(c.d.asBytes, key, 6);\r
  SendCommand(&c);\r
\r
	PrintAndLog("\n");\r
\r
	// wait cycle\r
	while (true) {\r
		printf(".");\r
		if (ukbhit()) {\r
			getchar();\r
			printf("\naborted via keyboard!\n");\r
			break;\r
		}\r
\r
		resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
\r
		if (resp != NULL) {\r
			isEOF  = resp->arg[0] & 0xff;\r
\r
			if (isEOF) break;\r
			\r
			len = resp->arg[1] & 0xff;\r
			if (len == 0) continue;\r
			\r
			memcpy(&uid, resp->d.asBytes, 4); \r
			PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, resp->arg[2] & 0xff, (resp->arg[2] >> 8) & 0xff);\r
			vector = (fnVector *) realloc((void *)vector, (lenVector + len) * sizeof(fnVector) + 200);\r
			if (vector == NULL) {\r
				PrintAndLog("Memory allocation error for fnVector. len: %d bytes: %d", lenVector + len, (lenVector + len) * sizeof(fnVector)); \r
				break;\r
			}\r
			\r
			for (i = 0; i < len; i++) {\r
				vector[lenVector + i].blockNo = resp->arg[2] & 0xff;\r
				vector[lenVector + i].keyType = (resp->arg[2] >> 8) & 0xff;\r
				vector[lenVector + i].uid = uid;\r
\r
				memcpy(&vector[lenVector + i].nt,  (void *)(resp->d.asBytes + 8 + i * 8 + 0), 4);\r
				memcpy(&vector[lenVector + i].ks1, (void *)(resp->d.asBytes + 8 + i * 8 + 4), 4);\r
			}\r
\r
			lenVector += len;\r
		}\r
	}\r
	\r
	if (!lenVector) {\r
		PrintAndLog("Got 0 keys from proxmark."); \r
		return 1;\r
	}\r
	printf("------------------------------------------------------------------\n");\r
	\r
	// calc keys\r
	struct Crypto1State* revstate = NULL;\r
	struct Crypto1State* revstate_start = NULL;\r
	uint64_t lfsr;\r
	int kcount = 0;\r
	pKeys		*pk;\r
	\r
	if ((pk = (void *) malloc(sizeof(pKeys))) == NULL) return 1;\r
	memset(pk, 0x00, sizeof(pKeys));\r
	\r
	for (m = 0; m < lenVector; m++) {\r
		// And finally recover the first 32 bits of the key\r
		revstate = lfsr_recovery32(vector[m].ks1, vector[m].nt ^ vector[m].uid);\r
		if (revstate_start == NULL) revstate_start = revstate;\r
	\r
		while ((revstate->odd != 0x0) || (revstate->even != 0x0)) {\r
			lfsr_rollback_word(revstate, vector[m].nt ^ vector[m].uid, 0);\r
			crypto1_get_lfsr(revstate, &lfsr);\r
\r
			// Allocate a new space for keys\r
			if (((kcount % MEM_CHUNK) == 0) || (kcount >= pk->size)) {\r
				pk->size += MEM_CHUNK;\r
//fprintf(stdout, "New chunk by %d, sizeof %d\n", kcount, pk->size * sizeof(uint64_t));\r
				pk->possibleKeys = (uint64_t *) realloc((void *)pk->possibleKeys, pk->size * sizeof(uint64_t));\r
				if (pk->possibleKeys == NULL) {\r
					PrintAndLog("Memory allocation error for pk->possibleKeys"); \r
					return 1;\r
				}\r
			}\r
			pk->possibleKeys[kcount] = lfsr;\r
			kcount++;\r
			revstate++;\r
		}\r
	free(revstate_start);\r
	revstate_start = NULL;\r
\r
	}\r
	\r
	// Truncate\r
	if (kcount != 0) {\r
		pk->size = --kcount;\r
		if ((pk->possibleKeys = (uint64_t *) realloc((void *)pk->possibleKeys, pk->size * sizeof(uint64_t))) == NULL) {\r
			PrintAndLog("Memory allocation error for pk->possibleKeys"); \r
			return 1;\r
		}		\r
	}\r
\r
	PrintAndLog("Total keys count:%d", kcount);\r
	ck = uniqsort(pk->possibleKeys, pk->size);\r
\r
	// fill key array\r
	for (i = 0; i < 16 ; i++) {\r
		num_to_bytes(ck[i].key, 6, (uint8_t*)(resultKeys + i * 6));\r
	}\r
\r
	// finalize\r
	free(pk->possibleKeys);\r
	free(pk);\r
	free(ck);\r
	free(vector);\r
\r
	return 0;\r
}\r
\r
int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){\r
	*key = 0;\r
\r
  UsbCommand c = {CMD_MIFARE_CHKKEYS, {blockNo, keyType, keycnt}};\r
	memcpy(c.d.asBytes, keyBlock, 6 * keycnt);\r
\r
  SendCommand(&c);\r
\r
	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 3000);\r
\r
	if (resp == NULL) return 1;\r
	if ((resp->arg[0] & 0xff) != 0x01) return 2;\r
	*key = bytes_to_num(resp->d.asBytes, 6);\r
	return 0;\r
}\r
\r
// EMULATOR\r
\r
int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
	UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};\r
 \r
	SendCommand(&c);\r
\r
	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
\r
	if (resp == NULL) return 1;\r
	memcpy(data, resp->d.asBytes, blocksCount * 16); \r
	return 0;\r
}\r
\r
int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r
	UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}};\r
	memcpy(c.d.asBytes, data, blocksCount * 16); \r
	SendCommand(&c);\r
	return 0;\r
}\r
\r
// "MAGIC" CARD\r
\r
int mfCSetUID(uint8_t *uid, uint8_t *oldUID, int wantWipe) {\r
	uint8_t block0[16];\r
	memset(block0, 0, 16);\r
	memcpy(block0, uid, 4); \r
	block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // Mifare UID BCC\r
	// mifare classic SAK(byte 5) and ATQA(byte 6 and 7)\r
	block0[5] = 0x88;\r
	block0[6] = 0x04;\r
	block0[7] = 0x00;\r
	\r
	return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);\r
}\r
\r
int mfCSetBlock(uint8_t blockNo, uint8_t *data, uint8_t *uid, int wantWipe, uint8_t params) {\r
	uint8_t isOK = 0;\r
\r
	UsbCommand c = {CMD_MIFARE_EML_CSETBLOCK, {wantWipe, params & (0xFE | (uid == NULL ? 0:1)), blockNo}};\r
	memcpy(c.d.asBytes, data, 16); \r
	SendCommand(&c);\r
\r
	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
\r
	if (resp != NULL) {\r
		isOK  = resp->arg[0] & 0xff;\r
		if (uid != NULL) memcpy(uid, resp->d.asBytes, 4); \r
		if (!isOK) return 2;\r
	} else {\r
		PrintAndLog("Command execute timeout");\r
		return 1;\r
	}\r
	return 0;\r
}\r
\r
int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {\r
	uint8_t isOK = 0;\r
\r
	UsbCommand c = {CMD_MIFARE_EML_CGETBLOCK, {params, 0, blockNo}};\r
	SendCommand(&c);\r
\r
	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
\r
	if (resp != NULL) {\r
		isOK  = resp->arg[0] & 0xff;\r
		memcpy(data, resp->d.asBytes, 16); \r
		if (!isOK) return 2;\r
	} else {\r
		PrintAndLog("Command execute timeout");\r
		return 1;\r
	}\r
	return 0;\r
}\r
\r
// SNIFFER\r
\r
// constants\r
static uint8_t trailerAccessBytes[4] = {0x08, 0x77, 0x8F, 0x00};\r
\r
// variables\r
char logHexFileName[200] = {0x00};\r
static uint8_t traceCard[4096] = {0x00};\r
static char traceFileName[20];\r
static int traceState = TRACE_IDLE;\r
static uint8_t traceCurBlock = 0;\r
static uint8_t traceCurKey = 0;\r
\r
struct Crypto1State *traceCrypto1 = NULL;\r
\r
struct Crypto1State *revstate;\r
uint64_t lfsr;\r
uint32_t ks2;\r
uint32_t ks3;\r
\r
uint32_t uid;     // serial number\r
uint32_t nt;      // tag challenge\r
uint32_t nt_par; \r
uint32_t nr_enc;  // encrypted reader challenge\r
uint32_t ar_enc;  // encrypted reader response\r
uint32_t nr_ar_par; \r
uint32_t at_enc;  // encrypted tag response\r
uint32_t at_par; \r
\r
int isTraceCardEmpty(void) {\r
	return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0));\r
}\r
\r
int isBlockEmpty(int blockN) {\r
	for (int i = 0; i < 16; i++) \r
		if (traceCard[blockN * 16 + i] != 0) return 0;\r
\r
	return 1;\r
}\r
\r
int isBlockTrailer(int blockN) {\r
 return ((blockN & 0x03) == 0x03);\r
}\r
\r
int loadTraceCard(uint8_t *tuid) {\r
	FILE * f;\r
	char buf[64];\r
	uint8_t buf8[64];\r
	int i, blockNum;\r
	\r
	if (!isTraceCardEmpty()) saveTraceCard();\r
	memset(traceCard, 0x00, 4096);\r
	memcpy(traceCard, tuid + 3, 4);\r
	FillFileNameByUID(traceFileName, tuid, ".eml", 7);\r
\r
	f = fopen(traceFileName, "r");\r
	if (!f) return 1;\r
	\r
	blockNum = 0;\r
	while(!feof(f)){\r
		memset(buf, 0, sizeof(buf));\r
		fgets(buf, sizeof(buf), f);\r
\r
		if (strlen(buf) < 32){\r
			if (feof(f)) break;\r
			PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
			return 2;\r
		}\r
		for (i = 0; i < 32; i += 2)\r
			sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r
\r
		memcpy(traceCard + blockNum * 16, buf8, 16);\r
\r
		blockNum++;\r
	}\r
	fclose(f);\r
\r
	return 0;\r
}\r
\r
int saveTraceCard(void) {\r
	FILE * f;\r
	\r
	if ((!strlen(traceFileName)) || (isTraceCardEmpty())) return 0;\r
	\r
	f = fopen(traceFileName, "w+");\r
	for (int i = 0; i < 64; i++) {  // blocks\r
		for (int j = 0; j < 16; j++)  // bytes\r
			fprintf(f, "%02x", *(traceCard + i * 16 + j)); \r
		fprintf(f,"\n");\r
	}\r
	fclose(f);\r
\r
	return 0;\r
}\r
\r
int mfTraceInit(uint8_t *tuid, uint8_t *atqa, uint8_t sak, bool wantSaveToEmlFile) {\r
\r
	if (traceCrypto1) crypto1_destroy(traceCrypto1);\r
	traceCrypto1 = NULL;\r
\r
	if (wantSaveToEmlFile) loadTraceCard(tuid);\r
	traceCard[4] = traceCard[0] ^ traceCard[1] ^ traceCard[2] ^ traceCard[3];\r
	traceCard[5] = sak;\r
	memcpy(&traceCard[6], atqa, 2);\r
	traceCurBlock = 0;\r
	uid = bytes_to_num(tuid + 3, 4);\r
	\r
	traceState = TRACE_IDLE;\r
\r
	return 0;\r
}\r
\r
void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len, bool isEncrypted){\r
	uint8_t	bt = 0;\r
	int i;\r
	\r
	if (len != 1) {\r
		for (i = 0; i < len; i++)\r
			data[i] = crypto1_byte(pcs, 0x00, isEncrypted) ^ data[i];\r
	} else {\r
		bt = 0;\r
		for (i = 0; i < 4; i++)\r
			bt |= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], i)) << i;\r
				\r
		data[0] = bt;\r
	}\r
	return;\r
}\r
\r
\r
int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEmlFile) {\r
	uint8_t data[64];\r
\r
	if (traceState == TRACE_ERROR) return 1;\r
	if (len > 64) {\r
		traceState = TRACE_ERROR;\r
		return 1;\r
	}\r
	\r
	memcpy(data, data_src, len);\r
	if ((traceCrypto1) && ((traceState == TRACE_IDLE) || (traceState > TRACE_AUTH_OK))) {\r
		mf_crypto1_decrypt(traceCrypto1, data, len, 0);\r
		PrintAndLog("dec> %s", sprint_hex(data, len));\r
		AddLogHex(logHexFileName, "dec> ", data, len); \r
	}\r
	\r
	switch (traceState) {\r
	case TRACE_IDLE: \r
		// check packet crc16!\r
		if ((len >= 4) && (!CheckCrc14443(CRC_14443_A, data, len))) {\r
			PrintAndLog("dec> CRC ERROR!!!");\r
			AddLogLine(logHexFileName, "dec> ", "CRC ERROR!!!"); \r
			traceState = TRACE_ERROR;  // do not decrypt the next commands\r
			return 1;\r
		}\r
		\r
		// AUTHENTICATION\r
		if ((len ==4) && ((data[0] == 0x60) || (data[0] == 0x61))) {\r
			traceState = TRACE_AUTH1;\r
			traceCurBlock = data[1];\r
			traceCurKey = data[0] == 60 ? 1:0;\r
			return 0;\r
		}\r
\r
		// READ\r
		if ((len ==4) && ((data[0] == 0x30))) {\r
			traceState = TRACE_READ_DATA;\r
			traceCurBlock = data[1];\r
			return 0;\r
		}\r
\r
		// WRITE\r
		if ((len ==4) && ((data[0] == 0xA0))) {\r
			traceState = TRACE_WRITE_OK;\r
			traceCurBlock = data[1];\r
			return 0;\r
		}\r
\r
		// HALT\r
		if ((len ==4) && ((data[0] == 0x50) && (data[1] == 0x00))) {\r
			traceState = TRACE_ERROR;  // do not decrypt the next commands\r
			return 0;\r
		}\r
		\r
		return 0;\r
	break;\r
	\r
	case TRACE_READ_DATA: \r
		if (len == 18) {\r
			traceState = TRACE_IDLE;\r
\r
			if (isBlockTrailer(traceCurBlock)) {\r
				memcpy(traceCard + traceCurBlock * 16 + 6, data + 6, 4);\r
			} else {\r
				memcpy(traceCard + traceCurBlock * 16, data, 16);\r
			}\r
			if (wantSaveToEmlFile) saveTraceCard();\r
			return 0;\r
		} else {\r
			traceState = TRACE_ERROR;\r
			return 1;\r
		}\r
	break;\r
\r
	case TRACE_WRITE_OK: \r
		if ((len == 1) && (data[0] = 0x0a)) {\r
			traceState = TRACE_WRITE_DATA;\r
\r
			return 0;\r
		} else {\r
			traceState = TRACE_ERROR;\r
			return 1;\r
		}\r
	break;\r
\r
	case TRACE_WRITE_DATA: \r
		if (len == 18) {\r
			traceState = TRACE_IDLE;\r
\r
			memcpy(traceCard + traceCurBlock * 16, data, 16);\r
			if (wantSaveToEmlFile) saveTraceCard();\r
			return 0;\r
		} else {\r
			traceState = TRACE_ERROR;\r
			return 1;\r
		}\r
	break;\r
\r
	case TRACE_AUTH1: \r
		if (len == 4) {\r
			traceState = TRACE_AUTH2;\r
\r
			nt = bytes_to_num(data, 4);\r
			nt_par = parity;\r
			return 0;\r
		} else {\r
			traceState = TRACE_ERROR;\r
			return 1;\r
		}\r
	break;\r
\r
	case TRACE_AUTH2: \r
		if (len == 8) {\r
			traceState = TRACE_AUTH_OK;\r
\r
			nr_enc = bytes_to_num(data, 4);\r
			ar_enc = bytes_to_num(data + 4, 4);\r
			nr_ar_par = parity;\r
			return 0;\r
		} else {\r
			traceState = TRACE_ERROR;\r
			return 1;\r
		}\r
	break;\r
\r
	case TRACE_AUTH_OK: \r
		if (len ==4) {\r
			traceState = TRACE_IDLE;\r
\r
			at_enc = bytes_to_num(data, 4);\r
			at_par = parity;\r
			\r
			//  decode key here)\r
			if (!traceCrypto1) {\r
				ks2 = ar_enc ^ prng_successor(nt, 64);\r
				ks3 = at_enc ^ prng_successor(nt, 96);\r
				revstate = lfsr_recovery64(ks2, ks3);\r
				lfsr_rollback_word(revstate, 0, 0);\r
				lfsr_rollback_word(revstate, 0, 0);\r
				lfsr_rollback_word(revstate, nr_enc, 1);\r
				lfsr_rollback_word(revstate, uid ^ nt, 0);\r
			}else{\r
				ks2 = ar_enc ^ prng_successor(nt, 64);\r
				ks3 = at_enc ^ prng_successor(nt, 96);\r
				revstate = lfsr_recovery64(ks2, ks3);\r
				lfsr_rollback_word(revstate, 0, 0);\r
				lfsr_rollback_word(revstate, 0, 0);\r
				lfsr_rollback_word(revstate, nr_enc, 1);\r
				lfsr_rollback_word(revstate, uid ^ nt, 0);\r
			}\r
			crypto1_get_lfsr(revstate, &lfsr);\r
			printf("key> %x%x\n", (unsigned int)((lfsr & 0xFFFFFFFF00000000) >> 32), (unsigned int)(lfsr & 0xFFFFFFFF));\r
			AddLogUint64(logHexFileName, "key> ", lfsr); \r
			\r
			int blockShift = ((traceCurBlock & 0xFC) + 3) * 16;\r
			if (isBlockEmpty((traceCurBlock & 0xFC) + 3)) memcpy(traceCard + blockShift + 6, trailerAccessBytes, 4);\r
			\r
			if (traceCurKey) {\r
				num_to_bytes(lfsr, 6, traceCard + blockShift + 10);\r
			} else {\r
				num_to_bytes(lfsr, 6, traceCard + blockShift);\r
			}\r
			if (wantSaveToEmlFile) saveTraceCard();\r
\r
			if (traceCrypto1) {\r
				crypto1_destroy(traceCrypto1);\r
			}\r
			\r
			// set cryptosystem state\r
			traceCrypto1 = lfsr_recovery64(ks2, ks3);\r
			\r
//	nt = crypto1_word(traceCrypto1, nt ^ uid, 1) ^ nt;\r
\r
	/*	traceCrypto1 = crypto1_create(lfsr); // key in lfsr\r
		crypto1_word(traceCrypto1, nt ^ uid, 0);\r
		crypto1_word(traceCrypto1, ar, 1);\r
		crypto1_word(traceCrypto1, 0, 0);\r
		crypto1_word(traceCrypto1, 0, 0);*/\r
	\r
			return 0;\r
		} else {\r
			traceState = TRACE_ERROR;\r
			return 1;\r
		}\r
	break;\r
\r
	default: \r
		traceState = TRACE_ERROR;\r
		return 1;\r
	}\r
\r
	return 0;\r
}\r
Commit	Line	Data
b62a5a84	1	// Merlok, 2011, 2012\r
f397b5cc M	2	// people from mifare@nethemba.com, 2010\r
	3	//\r
	4	// This code is licensed to you under the terms of the GNU GPL, version 2 or,\r
	5	// at your option, any later version. See the LICENSE.txt file for the text of\r
	6	// the license.\r
	7	//-----------------------------------------------------------------------------\r
55acbb2a	8	// mifare commands\r
f397b5cc M	9	//-----------------------------------------------------------------------------\r
	10	\r
	11	#include <stdio.h>\r
873014de	12	#include <stdlib.h> \r
31b6e9af	13	#include <string.h>\r
f397b5cc M	14	#include "mifarehost.h"\r
f397b5cc M	15	\r
55acbb2a	16	// MIFARE\r
f397b5cc M	17	\r
	18	int compar_int(const void * a, const void * b) {\r
	19	return ((uint64_t)b - (uint64_t)a);\r
	20	}\r
	21	\r
	22	// Compare countKeys structure\r
	23	int compar_special_int(const void * a, const void * b) {\r
	24	return (((countKeys )b)->count - ((countKeys )a)->count);\r
	25	}\r
	26	\r
	27	countKeys * uniqsort(uint64_t * possibleKeys, uint32_t size) {\r
	28	int i, j = 0;\r
	29	int count = 0;\r
	30	countKeys *our_counts;\r
	31	\r
	32	qsort(possibleKeys, size, sizeof (uint64_t), compar_int);\r
	33	\r
	34	our_counts = calloc(size, sizeof(countKeys));\r
	35	if (our_counts == NULL) {\r
	36	PrintAndLog("Memory allocation error for our_counts");\r
	37	return NULL;\r
	38	}\r
	39	\r
	40	for (i = 0; i < size; i++) {\r
	41	if (possibleKeys[i+1] == possibleKeys[i]) { \r
	42	count++;\r
	43	} else {\r
	44	our_counts[j].key = possibleKeys[i];\r
	45	our_counts[j].count = count;\r
	46	j++;\r
	47	count=0;\r
	48	}\r
	49	}\r
	50	qsort(our_counts, j, sizeof(countKeys), compar_special_int);\r
	51	return (our_counts);\r
	52	}\r
	53	\r
	54	int mfnested(uint8_t blockNo, uint8_t keyType, uint8_t * key, uint8_t trgBlockNo, uint8_t trgKeyType, uint8_t * resultKeys) \r
	55	{\r
	56	int i, m, len;\r
	57	uint8_t isEOF;\r
	58	uint32_t uid;\r
	59	fnVector * vector = NULL;\r
	60	countKeys *ck;\r
	61	int lenVector = 0;\r
	62	UsbCommand * resp = NULL;\r
	63	\r
	64	memset(resultKeys, 0x00, 16 * 6);\r
	65	\r
	66	// flush queue\r
	67	while (WaitForResponseTimeout(CMD_ACK, 500) != NULL) ;\r
	68	\r
	69	UsbCommand c = {CMD_MIFARE_NESTED, {blockNo, keyType, trgBlockNo + trgKeyType * 0x100}};\r
	70	memcpy(c.d.asBytes, key, 6);\r
	71	SendCommand(&c);\r
	72	\r
	73	PrintAndLog("\n");\r
	74	\r
	75	// wait cycle\r
	76	while (true) {\r
	77	printf(".");\r
	78	if (ukbhit()) {\r
	79	getchar();\r
	80	printf("\naborted via keyboard!\n");\r
81	break;\r
82	}\r
83	\r
84	resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
85	\r
86	if (resp != NULL) {\r
87	isEOF = resp->arg[0] & 0xff;\r
88	\r
89	if (isEOF) break;\r
90	\r
91	len = resp->arg[1] & 0xff;\r
92	if (len == 0) continue;\r
93	\r
94	memcpy(&uid, resp->d.asBytes, 4); \r
95	PrintAndLog("uid:%08x len=%d trgbl=%d trgkey=%x", uid, len, resp->arg[2] & 0xff, (resp->arg[2] >> 8) & 0xff);\r
96	vector = (fnVector ) realloc((void )vector, (lenVector + len) * sizeof(fnVector) + 200);\r
97	if (vector == NULL) {\r
98	PrintAndLog("Memory allocation error for fnVector. len: %d bytes: %d", lenVector + len, (lenVector + len) * sizeof(fnVector)); \r
99	break;\r
100	}\r
101	\r
102	for (i = 0; i < len; i++) {\r
103	vector[lenVector + i].blockNo = resp->arg[2] & 0xff;\r
104	vector[lenVector + i].keyType = (resp->arg[2] >> 8) & 0xff;\r
105	vector[lenVector + i].uid = uid;\r
106	\r
107	memcpy(&vector[lenVector + i].nt, (void )(resp->d.asBytes + 8 + i 8 + 0), 4);\r
108	memcpy(&vector[lenVector + i].ks1, (void )(resp->d.asBytes + 8 + i 8 + 4), 4);\r
109	}\r
110	\r
111	lenVector += len;\r
112	}\r
113	}\r
114	\r
115	if (!lenVector) {\r
116	PrintAndLog("Got 0 keys from proxmark."); \r
117	return 1;\r
118	}\r
119	printf("------------------------------------------------------------------\n");\r
120	\r
121	// calc keys\r
122	struct Crypto1State* revstate = NULL;\r
123	struct Crypto1State* revstate_start = NULL;\r
124	uint64_t lfsr;\r
125	int kcount = 0;\r
126	pKeys *pk;\r
127	\r
128	if ((pk = (void *) malloc(sizeof(pKeys))) == NULL) return 1;\r
129	memset(pk, 0x00, sizeof(pKeys));\r
130	\r
131	for (m = 0; m < lenVector; m++) {\r
132	// And finally recover the first 32 bits of the key\r
133	revstate = lfsr_recovery32(vector[m].ks1, vector[m].nt ^ vector[m].uid);\r
134	if (revstate_start == NULL) revstate_start = revstate;\r
135	\r
136	while ((revstate->odd != 0x0) \|\| (revstate->even != 0x0)) {\r
137	lfsr_rollback_word(revstate, vector[m].nt ^ vector[m].uid, 0);\r
138	crypto1_get_lfsr(revstate, &lfsr);\r
139	\r
140	// Allocate a new space for keys\r
141	if (((kcount % MEM_CHUNK) == 0) \|\| (kcount >= pk->size)) {\r
142	pk->size += MEM_CHUNK;\r
143	//fprintf(stdout, "New chunk by %d, sizeof %d\n", kcount, pk->size * sizeof(uint64_t));\r
144	pk->possibleKeys = (uint64_t ) realloc((void )pk->possibleKeys, pk->size * sizeof(uint64_t));\r
145	if (pk->possibleKeys == NULL) {\r
146	PrintAndLog("Memory allocation error for pk->possibleKeys"); \r
147	return 1;\r
148	}\r
149	}\r
150	pk->possibleKeys[kcount] = lfsr;\r
151	kcount++;\r
152	revstate++;\r
153	}\r
154	free(revstate_start);\r
155	revstate_start = NULL;\r
156	\r
157	}\r
158	\r
159	// Truncate\r
160	if (kcount != 0) {\r
161	pk->size = --kcount;\r
162	if ((pk->possibleKeys = (uint64_t ) realloc((void )pk->possibleKeys, pk->size * sizeof(uint64_t))) == NULL) {\r
163	PrintAndLog("Memory allocation error for pk->possibleKeys"); \r
164	return 1;\r
165	} \r
166	}\r
167	\r
168	PrintAndLog("Total keys count:%d", kcount);\r
169	ck = uniqsort(pk->possibleKeys, pk->size);\r
170	\r
171	// fill key array\r
172	for (i = 0; i < 16 ; i++) {\r
173	num_to_bytes(ck[i].key, 6, (uint8_t)(resultKeys + i 6));\r
174	}\r
175	\r
176	// finalize\r
177	free(pk->possibleKeys);\r
178	free(pk);\r
179	free(ck);\r
180	free(vector);\r
181	\r
182	return 0;\r
183	}\r
184	\r
185	int mfCheckKeys (uint8_t blockNo, uint8_t keyType, uint8_t keycnt, uint8_t * keyBlock, uint64_t * key){\r
186	*key = 0;\r
187	\r
188	UsbCommand c = {CMD_MIFARE_CHKKEYS, {blockNo, keyType, keycnt}};\r
189	memcpy(c.d.asBytes, keyBlock, 6 * keycnt);\r
190	\r
191	SendCommand(&c);\r
192	\r
193	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 3000);\r
194	\r
195	if (resp == NULL) return 1;\r
196	if ((resp->arg[0] & 0xff) != 0x01) return 2;\r
197	*key = bytes_to_num(resp->d.asBytes, 6);\r
198	return 0;\r
199	}\r
8556b852	200	\r
55acbb2a M	201	// EMULATOR\r
55acbb2a M	202	\r
8556b852	203	int mfEmlGetMem(uint8_t *data, int blockNum, int blocksCount) {\r
545a1f38	204	UsbCommand c = {CMD_MIFARE_EML_MEMGET, {blockNum, blocksCount, 0}};\r
8556b852	205	\r
545a1f38	206	SendCommand(&c);\r
8556b852 M	207	\r
	208	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
	209	\r
	210	if (resp == NULL) return 1;\r
	211	memcpy(data, resp->d.asBytes, blocksCount * 16); \r
	212	return 0;\r
	213	}\r
	214	\r
	215	int mfEmlSetMem(uint8_t *data, int blockNum, int blocksCount) {\r
545a1f38	216	UsbCommand c = {CMD_MIFARE_EML_MEMSET, {blockNum, blocksCount, 0}};\r
8556b852	217	memcpy(c.d.asBytes, data, blocksCount * 16); \r
545a1f38	218	SendCommand(&c);\r
8556b852 M	219	return 0;\r
	220	}\r
	221	\r
55acbb2a M	222	// "MAGIC" CARD\r
55acbb2a M	223	\r
0675f200	224	int mfCSetUID(uint8_t uid, uint8_t oldUID, int wantWipe) {\r
0675f200 M	225	uint8_t block0[16];\r
	226	memset(block0, 0, 16);\r
	227	memcpy(block0, uid, 4); \r
	228	block0[4] = block0[0]^block0[1]^block0[2]^block0[3]; // Mifare UID BCC\r
8784cd1a M	229	// mifare classic SAK(byte 5) and ATQA(byte 6 and 7)\r
	230	block0[5] = 0x88;\r
	231	block0[6] = 0x04;\r
	232	block0[7] = 0x00;\r
f774db95	233	\r
208a0166	234	return mfCSetBlock(0, block0, oldUID, wantWipe, CSETBLOCK_SINGLE_OPER);\r
f774db95 M	235	}\r
f774db95 M	236	\r
208a0166	237	int mfCSetBlock(uint8_t blockNo, uint8_t data, uint8_t uid, int wantWipe, uint8_t params) {\r
f774db95	238	uint8_t isOK = 0;\r
0675f200	239	\r
545a1f38	240	UsbCommand c = {CMD_MIFARE_EML_CSETBLOCK, {wantWipe, params & (0xFE \| (uid == NULL ? 0:1)), blockNo}};\r
f774db95	241	memcpy(c.d.asBytes, data, 16); \r
545a1f38	242	SendCommand(&c);\r
0675f200 M	243	\r
	244	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
	245	\r
	246	if (resp != NULL) {\r
	247	isOK = resp->arg[0] & 0xff;\r
208a0166	248	if (uid != NULL) memcpy(uid, resp->d.asBytes, 4); \r
0675f200 M	249	if (!isOK) return 2;\r
	250	} else {\r
	251	PrintAndLog("Command execute timeout");\r
	252	return 1;\r
	253	}\r
	254	return 0;\r
	255	}\r
545a1f38 M	256	\r
	257	int mfCGetBlock(uint8_t blockNo, uint8_t *data, uint8_t params) {\r
	258	uint8_t isOK = 0;\r
	259	\r
	260	UsbCommand c = {CMD_MIFARE_EML_CGETBLOCK, {params, 0, blockNo}};\r
	261	SendCommand(&c);\r
	262	\r
	263	UsbCommand * resp = WaitForResponseTimeout(CMD_ACK, 1500);\r
	264	\r
	265	if (resp != NULL) {\r
	266	isOK = resp->arg[0] & 0xff;\r
	267	memcpy(data, resp->d.asBytes, 16); \r
	268	if (!isOK) return 2;\r
	269	} else {\r
	270	PrintAndLog("Command execute timeout");\r
	271	return 1;\r
	272	}\r
	273	return 0;\r
	274	}\r
55acbb2a M	275	\r
	276	// SNIFFER\r
	277	\r
e0c635d1 M	278	// constants\r
	279	static uint8_t trailerAccessBytes[4] = {0x08, 0x77, 0x8F, 0x00};\r
	280	\r
55acbb2a M	281	// variables\r
55acbb2a M	282	char logHexFileName[200] = {0x00};\r
e0c635d1 M	283	static uint8_t traceCard[4096] = {0x00};\r
e0c635d1 M	284	static char traceFileName[20];\r
55acbb2a M	285	static int traceState = TRACE_IDLE;\r
	286	static uint8_t traceCurBlock = 0;\r
	287	static uint8_t traceCurKey = 0;\r
	288	\r
	289	struct Crypto1State *traceCrypto1 = NULL;\r
	290	\r
	291	struct Crypto1State *revstate;\r
	292	uint64_t lfsr;\r
	293	uint32_t ks2;\r
	294	uint32_t ks3;\r
	295	\r
	296	uint32_t uid; // serial number\r
	297	uint32_t nt; // tag challenge\r
71d90e54	298	uint32_t nt_par; \r
55acbb2a M	299	uint32_t nr_enc; // encrypted reader challenge\r
55acbb2a M	300	uint32_t ar_enc; // encrypted reader response\r
71d90e54	301	uint32_t nr_ar_par; \r
55acbb2a	302	uint32_t at_enc; // encrypted tag response\r
71d90e54	303	uint32_t at_par; \r
55acbb2a	304	\r
e0c635d1 M	305	int isTraceCardEmpty(void) {\r
	306	return ((traceCard[0] == 0) && (traceCard[1] == 0) && (traceCard[2] == 0) && (traceCard[3] == 0));\r
	307	}\r
55acbb2a	308	\r
e0c635d1 M	309	int isBlockEmpty(int blockN) {\r
	310	for (int i = 0; i < 16; i++) \r
	311	if (traceCard[blockN * 16 + i] != 0) return 0;\r
55acbb2a	312	\r
e0c635d1 M	313	return 1;\r
	314	}\r
	315	\r
	316	int isBlockTrailer(int blockN) {\r
	317	return ((blockN & 0x03) == 0x03);\r
	318	}\r
	319	\r
	320	int loadTraceCard(uint8_t *tuid) {\r
	321	FILE * f;\r
	322	char buf[64];\r
	323	uint8_t buf8[64];\r
	324	int i, blockNum;\r
	325	\r
	326	if (!isTraceCardEmpty()) saveTraceCard();\r
55acbb2a M	327	memset(traceCard, 0x00, 4096);\r
55acbb2a M	328	memcpy(traceCard, tuid + 3, 4);\r
e0c635d1 M	329	FillFileNameByUID(traceFileName, tuid, ".eml", 7);\r
	330	\r
	331	f = fopen(traceFileName, "r");\r
	332	if (!f) return 1;\r
	333	\r
	334	blockNum = 0;\r
	335	while(!feof(f)){\r
	336	memset(buf, 0, sizeof(buf));\r
	337	fgets(buf, sizeof(buf), f);\r
	338	\r
	339	if (strlen(buf) < 32){\r
	340	if (feof(f)) break;\r
	341	PrintAndLog("File content error. Block data must include 32 HEX symbols");\r
	342	return 2;\r
	343	}\r
	344	for (i = 0; i < 32; i += 2)\r
	345	sscanf(&buf[i], "%02x", (unsigned int *)&buf8[i / 2]);\r
	346	\r
	347	memcpy(traceCard + blockNum * 16, buf8, 16);\r
	348	\r
	349	blockNum++;\r
	350	}\r
	351	fclose(f);\r
	352	\r
	353	return 0;\r
	354	}\r
	355	\r
	356	int saveTraceCard(void) {\r
	357	FILE * f;\r
	358	\r
	359	if ((!strlen(traceFileName)) \|\| (isTraceCardEmpty())) return 0;\r
	360	\r
	361	f = fopen(traceFileName, "w+");\r
	362	for (int i = 0; i < 64; i++) { // blocks\r
	363	for (int j = 0; j < 16; j++) // bytes\r
	364	fprintf(f, "%02x", (traceCard + i 16 + j)); \r
	365	fprintf(f,"\n");\r
	366	}\r
	367	fclose(f);\r
	368	\r
	369	return 0;\r
	370	}\r
	371	\r
	372	int mfTraceInit(uint8_t tuid, uint8_t atqa, uint8_t sak, bool wantSaveToEmlFile) {\r
	373	\r
	374	if (traceCrypto1) crypto1_destroy(traceCrypto1);\r
	375	traceCrypto1 = NULL;\r
	376	\r
	377	if (wantSaveToEmlFile) loadTraceCard(tuid);\r
55acbb2a M	378	traceCard[4] = traceCard[0] ^ traceCard[1] ^ traceCard[2] ^ traceCard[3];\r
	379	traceCard[5] = sak;\r
	380	memcpy(&traceCard[6], atqa, 2);\r
	381	traceCurBlock = 0;\r
	382	uid = bytes_to_num(tuid + 3, 4);\r
	383	\r
	384	traceState = TRACE_IDLE;\r
	385	\r
	386	return 0;\r
	387	}\r
	388	\r
	389	void mf_crypto1_decrypt(struct Crypto1State pcs, uint8_t data, int len, bool isEncrypted){\r
	390	uint8_t bt = 0;\r
	391	int i;\r
	392	\r
	393	if (len != 1) {\r
	394	for (i = 0; i < len; i++)\r
	395	data[i] = crypto1_byte(pcs, 0x00, isEncrypted) ^ data[i];\r
	396	} else {\r
	397	bt = 0;\r
	398	for (i = 0; i < 4; i++)\r
	399	bt \|= (crypto1_bit(pcs, 0, isEncrypted) ^ BIT(data[0], i)) << i;\r
	400	\r
	401	data[0] = bt;\r
	402	}\r
	403	return;\r
	404	}\r
	405	\r
	406	\r
71d90e54	407	int mfTraceDecode(uint8_t *data_src, int len, uint32_t parity, bool wantSaveToEmlFile) {\r
55acbb2a M	408	uint8_t data[64];\r
	409	\r
	410	if (traceState == TRACE_ERROR) return 1;\r
	411	if (len > 64) {\r
	412	traceState = TRACE_ERROR;\r
	413	return 1;\r
	414	}\r
	415	\r
	416	memcpy(data, data_src, len);\r
	417	if ((traceCrypto1) && ((traceState == TRACE_IDLE) \|\| (traceState > TRACE_AUTH_OK))) {\r
	418	mf_crypto1_decrypt(traceCrypto1, data, len, 0);\r
	419	PrintAndLog("dec> %s", sprint_hex(data, len));\r
	420	AddLogHex(logHexFileName, "dec> ", data, len); \r
	421	}\r
	422	\r
	423	switch (traceState) {\r
	424	case TRACE_IDLE: \r
8b6a93df M	425	// check packet crc16!\r
	426	if ((len >= 4) && (!CheckCrc14443(CRC_14443_A, data, len))) {\r
	427	PrintAndLog("dec> CRC ERROR!!!");\r
	428	AddLogLine(logHexFileName, "dec> ", "CRC ERROR!!!"); \r
	429	traceState = TRACE_ERROR; // do not decrypt the next commands\r
	430	return 1;\r
	431	}\r
55acbb2a M	432	\r
	433	// AUTHENTICATION\r
	434	if ((len ==4) && ((data[0] == 0x60) \|\| (data[0] == 0x61))) {\r
	435	traceState = TRACE_AUTH1;\r
	436	traceCurBlock = data[1];\r
	437	traceCurKey = data[0] == 60 ? 1:0;\r
	438	return 0;\r
	439	}\r
	440	\r
	441	// READ\r
	442	if ((len ==4) && ((data[0] == 0x30))) {\r
	443	traceState = TRACE_READ_DATA;\r
	444	traceCurBlock = data[1];\r
	445	return 0;\r
	446	}\r
	447	\r
	448	// WRITE\r
	449	if ((len ==4) && ((data[0] == 0xA0))) {\r
	450	traceState = TRACE_WRITE_OK;\r
	451	traceCurBlock = data[1];\r
	452	return 0;\r
	453	}\r
	454	\r
	455	// HALT\r
	456	if ((len ==4) && ((data[0] == 0x50) && (data[1] == 0x00))) {\r
	457	traceState = TRACE_ERROR; // do not decrypt the next commands\r
	458	return 0;\r
	459	}\r
	460	\r
	461	return 0;\r
	462	break;\r
	463	\r
	464	case TRACE_READ_DATA: \r
	465	if (len == 18) {\r
	466	traceState = TRACE_IDLE;\r
	467	\r
e0c635d1 M	468	if (isBlockTrailer(traceCurBlock)) {\r
	469	memcpy(traceCard + traceCurBlock * 16 + 6, data + 6, 4);\r
	470	} else {\r
	471	memcpy(traceCard + traceCurBlock * 16, data, 16);\r
	472	}\r
	473	if (wantSaveToEmlFile) saveTraceCard();\r
55acbb2a M	474	return 0;\r
	475	} else {\r
	476	traceState = TRACE_ERROR;\r
	477	return 1;\r
	478	}\r
	479	break;\r
	480	\r
	481	case TRACE_WRITE_OK: \r
	482	if ((len == 1) && (data[0] = 0x0a)) {\r
	483	traceState = TRACE_WRITE_DATA;\r
	484	\r
	485	return 0;\r
	486	} else {\r
	487	traceState = TRACE_ERROR;\r
	488	return 1;\r
	489	}\r
	490	break;\r
	491	\r
	492	case TRACE_WRITE_DATA: \r
	493	if (len == 18) {\r
	494	traceState = TRACE_IDLE;\r
	495	\r
	496	memcpy(traceCard + traceCurBlock * 16, data, 16);\r
e0c635d1	497	if (wantSaveToEmlFile) saveTraceCard();\r
55acbb2a M	498	return 0;\r
	499	} else {\r
	500	traceState = TRACE_ERROR;\r
	501	return 1;\r
	502	}\r
	503	break;\r
	504	\r
	505	case TRACE_AUTH1: \r
	506	if (len == 4) {\r
	507	traceState = TRACE_AUTH2;\r
	508	\r
	509	nt = bytes_to_num(data, 4);\r
71d90e54	510	nt_par = parity;\r
55acbb2a M	511	return 0;\r
	512	} else {\r
	513	traceState = TRACE_ERROR;\r
	514	return 1;\r
	515	}\r
	516	break;\r
	517	\r
	518	case TRACE_AUTH2: \r
	519	if (len == 8) {\r
	520	traceState = TRACE_AUTH_OK;\r
	521	\r
	522	nr_enc = bytes_to_num(data, 4);\r
	523	ar_enc = bytes_to_num(data + 4, 4);\r
71d90e54	524	nr_ar_par = parity;\r
55acbb2a M	525	return 0;\r
	526	} else {\r
	527	traceState = TRACE_ERROR;\r
	528	return 1;\r
	529	}\r
	530	break;\r
	531	\r
	532	case TRACE_AUTH_OK: \r
	533	if (len ==4) {\r
	534	traceState = TRACE_IDLE;\r
	535	\r
	536	at_enc = bytes_to_num(data, 4);\r
71d90e54	537	at_par = parity;\r
55acbb2a M	538	\r
	539	// decode key here)\r
	540	if (!traceCrypto1) {\r
	541	ks2 = ar_enc ^ prng_successor(nt, 64);\r
	542	ks3 = at_enc ^ prng_successor(nt, 96);\r
	543	revstate = lfsr_recovery64(ks2, ks3);\r
	544	lfsr_rollback_word(revstate, 0, 0);\r
	545	lfsr_rollback_word(revstate, 0, 0);\r
	546	lfsr_rollback_word(revstate, nr_enc, 1);\r
	547	lfsr_rollback_word(revstate, uid ^ nt, 0);\r
	548	}else{\r
	549	ks2 = ar_enc ^ prng_successor(nt, 64);\r
	550	ks3 = at_enc ^ prng_successor(nt, 96);\r
	551	revstate = lfsr_recovery64(ks2, ks3);\r
	552	lfsr_rollback_word(revstate, 0, 0);\r
	553	lfsr_rollback_word(revstate, 0, 0);\r
	554	lfsr_rollback_word(revstate, nr_enc, 1);\r
	555	lfsr_rollback_word(revstate, uid ^ nt, 0);\r
	556	}\r
	557	crypto1_get_lfsr(revstate, &lfsr);\r
	558	printf("key> %x%x\n", (unsigned int)((lfsr & 0xFFFFFFFF00000000) >> 32), (unsigned int)(lfsr & 0xFFFFFFFF));\r
	559	AddLogUint64(logHexFileName, "key> ", lfsr); \r
	560	\r
e0c635d1 M	561	int blockShift = ((traceCurBlock & 0xFC) + 3) * 16;\r
	562	if (isBlockEmpty((traceCurBlock & 0xFC) + 3)) memcpy(traceCard + blockShift + 6, trailerAccessBytes, 4);\r
	563	\r
55acbb2a	564	if (traceCurKey) {\r
e0c635d1	565	num_to_bytes(lfsr, 6, traceCard + blockShift + 10);\r
55acbb2a	566	} else {\r
e0c635d1	567	num_to_bytes(lfsr, 6, traceCard + blockShift);\r
55acbb2a	568	}\r
e0c635d1	569	if (wantSaveToEmlFile) saveTraceCard();\r
55acbb2a M	570	\r
	571	if (traceCrypto1) {\r
	572	crypto1_destroy(traceCrypto1);\r
	573	}\r
	574	\r
	575	// set cryptosystem state\r
	576	traceCrypto1 = lfsr_recovery64(ks2, ks3);\r
	577	\r
	578	// nt = crypto1_word(traceCrypto1, nt ^ uid, 1) ^ nt;\r
	579	\r
	580	/* traceCrypto1 = crypto1_create(lfsr); // key in lfsr\r
	581	crypto1_word(traceCrypto1, nt ^ uid, 0);\r
	582	crypto1_word(traceCrypto1, ar, 1);\r
	583	crypto1_word(traceCrypto1, 0, 0);\r
	584	crypto1_word(traceCrypto1, 0, 0);*/\r
	585	\r
	586	return 0;\r
	587	} else {\r
	588	traceState = TRACE_ERROR;\r
	589	return 1;\r
	590	}\r
	591	break;\r
	592	\r
	593	default: \r
	594	traceState = TRACE_ERROR;\r
	595	return 1;\r
	596	}\r
	597	\r
	598	return 0;\r
	599	}\r