X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/b62a5a8444db6dcfad2b491f3283f43378c630cf..13fc2e9c71175842dda4dedd878a92e07d519010:/armsrc/mifareutil.c

diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index 085531f4..3d6dce41 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -18,23 +18,11 @@
 #include "iso14443a.h"
 #include "crapto1.h"
 #include "mifareutil.h"
+#include "parity.h"
+#include "des.h"
 
 int MF_DBGLEVEL = MF_DBG_ALL;
 
-// memory management
-uint8_t* mifare_get_bigbufptr(void) {
-	return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET);	// was 3560 - tied to other size changes
-}
-uint8_t* eml_get_bigbufptr_sendbuf(void) {
-	return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);	
-}
-uint8_t* eml_get_bigbufptr_recbuf(void) {
-	return (((uint8_t *)BigBuf) + MIFARE_BUFF_OFFSET);
-}
-uint8_t* eml_get_bigbufptr_cardmem(void) {
-	return (((uint8_t *)BigBuf) + CARD_MEMORY);
-}
-
 // crypto1 helpers
 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
 	uint8_t	bt = 0;
@@ -44,121 +32,119 @@ void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
 		for (i = 0; i < len; i++)
 			data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
 	} else {
-		bt = 0;
-		for (i = 0; i < 4; i++)
-			bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], i)) << i;
-				
+		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 0)) << 0;
+		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 1)) << 1;
+		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 2)) << 2;
+		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data[0], 3)) << 3;
 		data[0] = bt;
 	}
 	return;
 }
 
-void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, int len, uint32_t *par) {
+void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
 	uint8_t bt = 0;
 	int i;
-	uint32_t mltpl = 1 << (len - 1); // for len=18 it=0x20000
-	*par = 0;
+	par[0] = 0;
+	
 	for (i = 0; i < len; i++) {
 		bt = data[i];
 		data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
-		*par = (*par >> 1) | ( ((filter(pcs->odd) ^ oddparity(bt)) & 0x01) * mltpl );
+		if ( ( i & 0x0007 ) == 0) 
+			par[ i >> 3 ] = 0;
+		par[ i >> 3 ] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
 	}	
-	return;
 }
 
 uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
 	uint8_t bt = 0;
-	int i;
-
-	for (i = 0; i < 4; i++)
-		bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
-		
+	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 0)) << 0;
+	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 1)) << 1;
+	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 2)) << 2;
+	bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, 3)) << 3;
 	return bt;
 }
 
-// send commands
-int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer)
-{
-	return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, NULL);
+// send X byte basic commands
+int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {
+	uint8_t dcmd[data_size+3];
+    dcmd[0] = cmd;
+	memcpy(dcmd+1, data, data_size);
+	AppendCrc14443a(dcmd, data_size+1);
+	ReaderTransmit(dcmd, sizeof(dcmd), timing);
+	int len = ReaderReceive(answer, answer_parity);
+	if(!len) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR)
+			Dbprintf("%02X Cmd failed. Card timeout.", cmd);
+		len = ReaderReceive(answer,answer_parity);
+    }
+	return len;
 }
 
-int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer, uint32_t * parptr)
-{
-	uint8_t dcmd[4], ecmd[4];
-	uint32_t pos, par, res;
-
-	dcmd[0] = cmd;
-	dcmd[1] = data;
+// send 2 byte commands
+int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing) {
+	uint16_t pos, res;
+	uint8_t dcmd[4] = {cmd, data, 0x00, 0x00};
+	uint8_t	ecmd[4] = {0x00, 0x00, 0x00, 0x00};
+	uint8_t par[1] = {0x00};			// 1 Byte parity is enough here
 	AppendCrc14443a(dcmd, 2);
-	
 	memcpy(ecmd, dcmd, sizeof(dcmd));
 	
 	if (crypted) {
-		par = 0;
-		for (pos = 0; pos < 4; pos++)
-		{
+		par[0] = 0;
+		for (pos = 0; pos < 4; pos++) {
 			ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
-			par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) * 0x08 );
+			par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
 		}	
-
-		ReaderTransmitPar(ecmd, sizeof(ecmd), par);
-
+		ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
 	} else {
-		ReaderTransmit(dcmd, sizeof(dcmd));
+		ReaderTransmit(dcmd, sizeof(dcmd), timing);
 	}
 
-	int len = ReaderReceivePar(answer, &par);
+	int len = ReaderReceive(answer, par);
+	
+	if (answer_parity) *answer_parity = par[0];
 	
-	if (parptr) *parptr = par;
-
 	if (crypted == CRYPT_ALL) {
 		if (len == 1) {
 			res = 0;
-			for (pos = 0; pos < 4; pos++)
-				res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
-				
-			answer[0] = res;
-			
+			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 0)) << 0;
+			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 1)) << 1;
+			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 2)) << 2;
+			res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], 3)) << 3;
+			answer[0] = res;			
 		} else {
 			for (pos = 0; pos < len; pos++)
-			{
 				answer[pos] = crypto1_byte(pcs, 0x00, 0) ^ answer[pos];
-			}
 		}
 	}
-	
 	return len;
 }
 
-// mifare commands
-int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested) 
-{
-	return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL);
+// mifare classic commands
+int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested) {
+	return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL);
 }
 
-int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested, uint32_t * ntptr) 
-{
-	// variables
+int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *ntptr, uint32_t *timing) {
 	int len;	
 	uint32_t pos;
-	uint8_t tmp4[4];
-	byte_t par = 0;
-	byte_t ar[4];
+	uint8_t par[1] = {0x00};
+
+	// "random" reader nonce:
+	//byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};
+	byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};
+	
 	uint32_t nt, ntpp; // Supplied tag nonce
 	
 	uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
-
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
+	
 	// Transmit MIFARE_CLASSIC_AUTH
-	len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer);
-  if (MF_DBGLEVEL >= 4)	Dbprintf("rand nonce len: %x", len);  
+	len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer, receivedAnswerPar, timing);
+	if (MF_DBGLEVEL >= 4)	Dbprintf("rand tag nonce len: %x", len);  
 	if (len != 4) return 1;
 	
-	ar[0] = 0x55;
-	ar[1] = 0x41;
-	ar[2] = 0x49;
-	ar[3] = 0x92; 
-	
 	// Save the tag nonce (nt)
 	nt = bytes_to_num(receivedAnswer, 4);
 
@@ -185,57 +171,50 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
 	if (ntptr)
 		*ntptr = nt;
 
-	par = 0;
 	// Generate (encrypted) nr+parity by loading it into the cipher (Nr)
-	for (pos = 0; pos < 4; pos++)
-	{
-		mf_nr_ar[pos] = crypto1_byte(pcs, ar[pos], 0) ^ ar[pos];
-		par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(ar[pos])) & 0x01) * 0x80 );
+	par[0] = 0;
+	for (pos = 0; pos < 4; pos++) {
+		mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
+		par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 	}	
 		
 	// Skip 32 bits in pseudo random generator
-	nt = prng_successor(nt,32);
+	nt = prng_successor(nt, 32);
 
 	//  ar+parity
-	for (pos = 4; pos < 8; pos++)
-	{
+	for (pos = 4; pos < 8; pos++) {
 		nt = prng_successor(nt,8);
 		mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
-		par = (par >> 1)| ( ((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) * 0x80 );
+		par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
 	}	
 		
 	// Transmit reader nonce and reader answer
-	ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par);
+	ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
 
-	// Receive 4 bit answer
-	len = ReaderReceive(receivedAnswer);
-	if (!len)
-	{
+	// Receive 4 byte tag answer
+	len = ReaderReceive(receivedAnswer, receivedAnswerPar);
+	if (!len) {
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Card timeout.");
 		return 2;
 	}
-	
-	memcpy(tmp4, receivedAnswer, 4);
+
 	ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
-	
-	if (ntpp != bytes_to_num(tmp4, 4)) {
+
+	if (ntpp != bytes_to_num(receivedAnswer, 4)) {
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Authentication failed. Error card response.");
 		return 3;
 	}
-
 	return 0;
 }
 
-int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) 
-{
-	// variables
+int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
+
 	int len;	
-	uint8_t	bt[2];
-	
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
+	uint8_t	bt[2] = {0x00, 0x00};	
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 	
-	// command MIFARE_CLASSIC_READBLOCK
-	len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer);
+	len = mifare_sendcmd_short(pcs, 1, ISO14443A_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 	if (len == 1) {
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  
 		return 1;
@@ -256,19 +235,157 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo
 	return 0;
 }
 
-int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) 
-{
+// mifare ultralight commands
+int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
+
+	uint16_t len = 0;
+	uint8_t resp[4] = {0x00, 0x00, 0x00, 0x00};
+	uint8_t respPar[1] = {0x00};
+	uint8_t key[4] = {0x00, 0x00, 0x00, 0x00};
+	memcpy(key, keybytes, 4);
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
+		Dbprintf("EV1 Auth : %02x%02x%02x%02x",	key[0], key[1], key[2], key[3]);
+	
+	len = mifare_sendcmd(0x1B, key, sizeof(key), resp, respPar, NULL);
+
+	if (len != 4) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
+		return 0;
+	}
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
+		Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
+
+	memcpy(pack, resp, 4);
+	return 1;
+}
+
+int mifare_ultra_auth(uint8_t *keybytes){
+
+	/// 3des2k
+	uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
+	uint8_t random_b[8] = {0x00};
+	uint8_t enc_random_b[8] = {0x00};
+	uint8_t rnd_ab[16] = {0x00};
+	uint8_t IV[8] = {0x00};
+	uint8_t key[16] = {0x00};
+	memcpy(key, keybytes, 16);
+
+	uint16_t len = 0;
+	uint8_t resp[19] = {0x00};
+	uint8_t respPar[3] = {0,0,0};
+
+	// REQUEST AUTHENTICATION
+	len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, resp, respPar ,NULL);
+	if (len != 11) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
+		return 0;
+	}
+
+	// tag nonce.
+	memcpy(enc_random_b,resp+1,8);
+
+	// decrypt nonce.
+	tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
+	rol(random_b,8);
+	memcpy(rnd_ab  ,random_a,8);
+	memcpy(rnd_ab+8,random_b,8);
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+		Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
+			enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);
+
+		Dbprintf("    B: %02x %02x %02x %02x %02x %02x %02x %02x",
+			random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
+
+		Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
+				rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
+
+		Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
+				rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
+	}
+
+	// encrypt    out, in, length, key, iv
+	tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
+
+	len = mifare_sendcmd(0xAF, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
+	if (len != 11) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
+		return 0;
+	}
+
+	uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
+	uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
+	memcpy(enc_resp, resp+1, 8);
+
+	// decrypt    out, in, length, key, iv 
+	tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
+	if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
+		return 0;
+	}
+
+	if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+		Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x", 
+				rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
+				rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
+
+		Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
+				rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
+				rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
+
+		Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
+				random_a[0],random_a[1],random_a[2],random_a[3],
+				random_a[4],random_a[5],random_a[6],random_a[7]);
+
+		Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
+				resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
+				resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
+	}
+	return 1;
+}
+
+int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData) {
+	uint16_t len = 0;
+	uint8_t	bt[2] = {0x00, 0x00};
+	uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
+	
+	len = mifare_sendcmd_short(NULL, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
+	if (len == 1) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+		return 1;
+	}
+	if (len != 18) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
+		return 2;
+	}
+    
+	memcpy(bt, receivedAnswer + 16, 2);
+	AppendCrc14443a(receivedAnswer, 16);
+	if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
+		return 3;
+	}
+	
+	memcpy(blockData, receivedAnswer, 14);
+	return 0;
+}
+
+int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
 	// variables
-	int len, i;	
-	uint32_t pos;
-	uint32_t par = 0;
-	byte_t res;
+	uint16_t len = 0;	
+	uint32_t pos = 0;
+	uint8_t par[3] = {0x00, 0x00, 0x00}; // enough for 18 Bytes to send
+	byte_t res = 0;
 	
 	uint8_t d_block[18], d_block_enc[18];
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
 	
 	// command MIFARE_CLASSIC_WRITEBLOCK
-	len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer);
+	len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
 
 	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd Error: %02x", receivedAnswer[0]);  
@@ -279,68 +396,141 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl
 	AppendCrc14443a(d_block, 16);
 	
 	// crypto
-	par = 0;
-	for (pos = 0; pos < 18; pos++)
-	{
+	for (pos = 0; pos < 18; pos++) {
 		d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
-		par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) * 0x20000 );
+		par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 	}	
 
-	ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par);
+	ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
 
 	// Receive the response
-	len = ReaderReceive(receivedAnswer);	
+	len = ReaderReceive(receivedAnswer, receivedAnswerPar);	
 
 	res = 0;
-	for (i = 0; i < 4; i++)
-		res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
+	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 0)) << 0;
+	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 1)) << 1;
+	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 2)) << 2;
+	res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], 3)) << 3;
 
 	if ((len != 1) || (res != 0x0A)) {
 		if (MF_DBGLEVEL >= 1)	Dbprintf("Cmd send data2 Error: %02x", res);  
 		return 2;
 	}
-	
 	return 0;
 }
 
-int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) 
-{
-	// variables
-	int len;	
-	
-	// Mifare HALT
-	uint8_t* receivedAnswer = mifare_get_bigbufptr();
+/* // command not needed, but left for future testing
+int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData) {
+	uint16_t len;
+    uint8_t par[3] = {0};  // enough for 18 parity bits
+	uint8_t d_block[18] = {0x00};
+	uint8_t receivedAnswer[MAX_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
+
+    len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
+
+    if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
+		if (MF_DBGLEVEL >= MF_DBG_ERROR)
+			Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
+        return 1;
+    }
+
+	memcpy(d_block, blockData, 16);
+    AppendCrc14443a(d_block, 16);
+
+	ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
+
+	len = ReaderReceive(receivedAnswer, receivedAnswerPar);
 
-	len = mifare_sendcmd_short(pcs, pcs == NULL ? 0:1, 0x50, 0x00, receivedAnswer);
+	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
+		if (MF_DBGLEVEL >= MF_DBG_ERROR)
+			Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
+        return 2;
+	}
+    return 0;
+}
+*/
+
+int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData) {
+    uint16_t len = 0;
+	uint8_t block[5] = {blockNo, 0x00, 0x00, 0x00, 0x00 };
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE] = {0x00};
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE] = {0x00};
+
+    // command MIFARE_CLASSIC_WRITEBLOCK
+	memcpy(block+1, blockData, 4);
+
+	len = mifare_sendcmd( MIFARE_ULC_WRITE, block, sizeof(block), receivedAnswer, receivedAnswerPar, NULL);
+
+    if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
+		if (MF_DBGLEVEL >= MF_DBG_ERROR)
+			Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
+        return 1;
+    }
+    return 0;
+}
+int mifare_classic_halt_ex(struct Crypto1State *pcs) {
+	uint16_t len = 0;	
+	uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
+	len = mifare_sendcmd_short(pcs, (pcs == NULL) ? CRYPT_NONE : CRYPT_ALL, 0x50, 0x00, receivedAnswer, NULL, NULL);
 	if (len != 0) {
-		if (MF_DBGLEVEL >= 1)	Dbprintf("halt error. response len: %x", len);  
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);  
 		return 1;
 	}
+	return 0;
+}
+int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {
+	return mifare_classic_halt_ex(pcs);
+}
 
+int mifare_ultra_halt() {
+	uint16_t len = 0;
+	uint8_t receivedAnswer[4] = {0x00, 0x00, 0x00, 0x00};
+ 	len = mifare_sendcmd_short(NULL, CRYPT_NONE, 0x50, 0x00, receivedAnswer, NULL, NULL);
+	if (len != 0) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);
+		return 1;
+	}
 	return 0;
 }
 
+
+// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
+// plus evtl. 8 sectors with 16 blocks each (4k cards)
+uint8_t NumBlocksPerSector(uint8_t sectorNo) {
+	return (sectorNo < 32) ? 4 : 16;
+}
+
+uint8_t FirstBlockOfSector(uint8_t sectorNo) {
+	if (sectorNo < 32)
+		return sectorNo * 4;
+	else
+		return 32*4 + (sectorNo - 32) * 16;
+		
+}
+
 // work with emulator memory
 void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
-	
-	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
+	emlSetMem_xt(data, blockNum, blocksCount, 16);
+}
+
+void emlSetMem_xt(uint8_t *data, int blockNum, int blocksCount, int blockBtWidth) {
+	uint8_t* emCARD = BigBuf_get_EM_addr();
+	memcpy(emCARD + blockNum * blockBtWidth, data, blocksCount * blockBtWidth);
 }
 
 void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
-	
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
 }
 
 void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
-	
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	memcpy(data, emCARD + bytePtr, byteCount);
 }
 
 int emlCheckValBl(int blockNum) {
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	uint8_t* data = emCARD + blockNum * 16;
 
 	if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
@@ -355,21 +545,19 @@ int emlCheckValBl(int blockNum) {
 }
 
 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	uint8_t* data = emCARD + blockNum * 16;
 	
-	if (emlCheckValBl(blockNum)) {
+	if (emlCheckValBl(blockNum))
 		return 1;
-	}
 	
 	memcpy(blReg, data, 4);
 	*blBlock = data[12];
-	
 	return 0;
 }
 
 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	uint8_t* data = emCARD + blockNum * 16;
 	
 	memcpy(data + 0, &blReg, 4);
@@ -386,10 +574,10 @@ int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 }
 
 uint64_t emlGetKey(int sectorNum, int keyType) {
-	uint8_t key[6];
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t key[6] = {0x00};
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	
-	memcpy(key, emCARD + 3 * 16 + sectorNum * 4 * 16 + keyType * 10, 6);
+	memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 	return bytes_to_num(key, 6);
 }
 
@@ -398,16 +586,108 @@ void emlClearMem(void) {
 	
 	const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 	const uint8_t uid[]   =   {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
-	uint8_t* emCARD = eml_get_bigbufptr_cardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	
-	memset(emCARD, 0, CARD_MEMORY_LEN);
+	memset(emCARD, 0, CARD_MEMORY_SIZE);
 	
 	// fill sectors trailer data
-	for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
+	for(b = 3; b < 256; b<127?(b+=4):(b+=16))
 		emlSetMem((uint8_t *)trailer, b , 1);
-	}	
 
 	// uid
 	emlSetMem((uint8_t *)uid, 0, 1);
 	return;
 }
+
+
+// Mifare desfire commands
+int mifare_sendcmd_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
+{
+    uint8_t dcmd[5] = {cmd, data[0], data[1], 0x00, 0x00};
+	AppendCrc14443a(dcmd, 3);
+	
+	ReaderTransmit(dcmd, sizeof(dcmd), NULL);
+	int len = ReaderReceive(answer, answer_parity);
+	if(!len) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) 
+			Dbprintf("Authentication failed. Card timeout.");
+		return 1;
+    }
+	return len;
+}
+
+int mifare_sendcmd_special2(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer,uint8_t *answer_parity, uint32_t *timing)
+{
+    uint8_t dcmd[20] = {0x00};
+    dcmd[0] = cmd;
+    memcpy(dcmd+1,data,17);
+	AppendCrc14443a(dcmd, 18);
+
+	ReaderTransmit(dcmd, sizeof(dcmd), NULL);
+	int len = ReaderReceive(answer, answer_parity);
+	if(!len){
+        if (MF_DBGLEVEL >= MF_DBG_ERROR)
+			Dbprintf("Authentication failed. Card timeout.");
+		return 1;
+    }
+	return len;
+}
+
+int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
+
+	int len;
+	// load key, keynumber
+	uint8_t data[2]={0x0a, 0x00};
+	uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
+	
+	len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
+	if (len == 1) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR)
+			Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+		return 1;
+	}
+	
+	if (len == 12) {
+		if (MF_DBGLEVEL >= MF_DBG_EXTENDED)	{
+			Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+				receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
+				receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
+				receivedAnswer[10],receivedAnswer[11]);
+			}
+			memcpy(blockData, receivedAnswer, 12);
+	        return 0;
+	}
+	return 1;
+}
+
+int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
+
+	int len;
+	uint8_t data[17] = {0x00};
+	data[0] = 0xAF;
+	memcpy(data+1,key,16);
+	
+	uint8_t receivedAnswer[MAX_FRAME_SIZE] = {0x00};
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE] = {0x00};
+	
+	len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
+	
+	if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR)
+			Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
+		return 1;
+	}
+	
+	if (len == 12){
+		if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+			Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+				receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
+				receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
+				receivedAnswer[10],receivedAnswer[11]);
+			}
+		memcpy(blockData, receivedAnswer, 12);
+		return 0;
+	}
+	return 1;
+}