X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/3de045905f901cc0d1ea49738c7d290a3acda541..704d552a776c35f4792971c739737047c0396205:/armsrc/mifareutil.c

diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index 18598191..84477a2b 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -9,29 +9,20 @@
 // Work with mifare cards.
 //-----------------------------------------------------------------------------
 
-#include "../include/proxmark3.h"
+#include "proxmark3.h"
 #include "apps.h"
 #include "util.h"
 #include "string.h"
 
-#include "../common/iso14443crc.h"
+#include "iso14443crc.h"
 #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* get_bigbufptr_recvrespbuf(void) {
-	return (((uint8_t *)BigBuf) + RECV_RESP_OFFSET);
-}
-uint8_t* get_bigbufptr_recvcmdbuf(void) {
-	return (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);	
-}
-uint8_t* get_bigbufptr_emlcardmem(void) {
-	return (((uint8_t *)BigBuf) + CARD_MEMORY_OFFSET);
-}
-
 // crypto1 helpers
 void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
 	uint8_t	bt = 0;
@@ -60,7 +51,7 @@ void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, u
 		data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];
 		if((i&0x0007) == 0) 
 			par[i>>3] = 0;
-		par[i>>3] |= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));
+		par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
 	}	
 	return;
 }
@@ -75,55 +66,27 @@ uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
 	return bt;
 }
 
-// send 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)
+// 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)
 {
-	return mifare_sendcmd_shortex(pcs, crypted, cmd, data, answer, answer_parity, timing);
-}
-
-int mifare_sendcmd_short_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[8];
-	dcmd[0] = cmd;
-    dcmd[1] = data[0];
-	dcmd[2] = data[1];
-	dcmd[3] = data[2];
-	dcmd[4] = data[3];
-	dcmd[5] = data[4];
-	AppendCrc14443a(dcmd, 6);
-	ReaderTransmit(dcmd, sizeof(dcmd), NULL);
-	int len = ReaderReceive(answer, answer_parity);
-	if(!len) {
-        if (MF_DBGLEVEL >= 1)   Dbprintf("Authentication failed. Card timeout.");
-        return 2;
+	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 0;
     }
 	return len;
 }
 
-int mifare_sendcmd_short_mfucauth(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t *data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing)
+// 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)
 {
-    uint8_t dcmd[19];
-	int len; 
-    dcmd[0] = cmd;
-    memcpy(dcmd+1,data,16);
-	AppendCrc14443a(dcmd, 17);
-	
-	ReaderTransmit(dcmd, sizeof(dcmd), timing);
-	len = ReaderReceive(answer, answer_parity);
-	if(!len) {
-        if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("Authentication failed. Card timeout.");
-        len = ReaderReceive(answer,answer_parity);
-    }
-    if(len==1)	{
-		if (MF_DBGLEVEL >= MF_DBG_ERROR)   Dbprintf("NAK - Authentication failed.");
-		return 1;
-        }
-	return len;
-}
-
-int mifare_sendcmd_shortex(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[4], ecmd[4];
+	uint8_t dcmd[4], ecmd[4];
 	uint16_t pos, res;
 	uint8_t par[1];			// 1 Byte parity is enough here
 	dcmd[0] = cmd;
@@ -137,7 +100,7 @@ int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cm
 		for (pos = 0; pos < 4; pos++)
 		{
 			ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
-			par[0] |= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));
+			par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
 		}	
 
 		ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
@@ -149,7 +112,7 @@ int mifare_sendcmd_shortex(struct Crypto1State *pcs, uint8_t crypted, uint8_t cm
 	int len = ReaderReceive(answer, par);
 	
 	if (answer_parity) *answer_parity = par[0];
-
+	
 	if (crypted == CRYPT_ALL) {
 		if (len == 1) {
 			res = 0;
@@ -175,31 +138,29 @@ int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo,
 	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, uint8_t isNested, uint32_t * ntptr, uint32_t *timing) 
+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) 
 {
 	// variables
 	int len;	
 	uint32_t pos;
 	uint8_t tmp4[4];
 	uint8_t par[1] = {0x00};
-	byte_t nr[4];
+
+	// "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 = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
-
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+	
 	// Transmit MIFARE_CLASSIC_AUTH
 	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;
 	
-	// "random" reader nonce:
-	nr[0] = 0x55;
-	nr[1] = 0x41;
-	nr[2] = 0x49;
-	nr[3] = 0x92; 
-	
 	// Save the tag nonce (nt)
 	nt = bytes_to_num(receivedAnswer, 4);
 
@@ -231,7 +192,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
 	for (pos = 0; pos < 4; pos++)
 	{
 		mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
-		par[0] |= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));
+		par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
 	}	
 		
 	// Skip 32 bits in pseudo random generator
@@ -242,7 +203,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
 	{
 		nt = prng_successor(nt,8);
 		mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
-		par[0] |= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));
+		par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));
 	}	
 		
 	// Transmit reader nonce and reader answer
@@ -273,8 +234,8 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo
 	int len;	
 	uint8_t	bt[2];
 	
-	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 	
 	// command MIFARE_CLASSIC_READBLOCK
 	len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer, receivedAnswerPar, NULL);
@@ -295,105 +256,160 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo
 	}
 	
 	memcpy(blockData, receivedAnswer, 16);
-	return 0;
+	return 0;
 }
 
 // mifare ultralight commands
-int mifare_ultra_auth1(uint32_t uid, uint8_t *blockData){
+int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
 
 	uint16_t len;
-	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
-	
-	len = mifare_sendcmd_short(NULL, 1, 0x1A, 0x00, receivedAnswer,receivedAnswerPar ,NULL);
-	if (len == 1) {
-		if (MF_DBGLEVEL >= MF_DBG_ERROR)
-			Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
-		return 1;
+	uint8_t resp[4];
+	uint8_t respPar[1];
+	uint8_t key[4] = {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 (len != 11)
-		return 1;
 
-	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]);
-		}
-	memcpy(blockData, receivedAnswer, 11);
-	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_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
+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;
-	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
+	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_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
+	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;
+	uint8_t	bt[2];
+	uint8_t receivedAnswer[MAX_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 	
-	len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, key, receivedAnswer, receivedAnswerPar, NULL);
+
+	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]);
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
 		return 1;
 	}
-	if (len != 11)
-		return 1;	
-	
-	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]);
+	if (len != 18) {
+		if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
+		return 2;
 	}
-	memcpy(blockData, receivedAnswer, 11);
+    
+	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_ultra_readblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
-{
-	uint16_t len;
-	uint8_t	bt[2];
-	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
-	
-	
-	// command MIFARE_CLASSIC_READBLOCK
-	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 mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) 
+{
+	// variables
 	uint16_t len, i;	
-	uint32_t pos;
-	uint8_t par[3] = {0};		// enough for 18 Bytes to send
-	byte_t res;
+	uint32_t pos = 0;
+	uint8_t par[3] = {0x00};		// enough for 18 Bytes to send
+	byte_t res = 0;
 	
 	uint8_t d_block[18], d_block_enc[18];
-	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t* receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
 	
 	// command MIFARE_CLASSIC_WRITEBLOCK
 	len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
@@ -410,7 +426,7 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl
 	for (pos = 0; pos < 18; pos++)
 	{
 		d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
-		par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
+		par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
 	}	
 
 	ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
@@ -427,94 +443,94 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl
 		return 2;
 	}
 	
-	return 0;
-}
-
-int mifare_ultra_writeblock(uint32_t uid, 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 = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
-	
-	// command MIFARE_CLASSIC_WRITEBLOCK
-	len = mifare_sendcmd_short(NULL, true, 0xA0, blockNo, receivedAnswer, receivedAnswerPar, NULL);
-
-	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
+	return 0;
+}
+
+/* // 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);    
-
-	if ((len != 1) || (receivedAnswer[0] != 0x0A)) {   //  0x0a - ACK
+			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);
+
+	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_special_writeblock(uint32_t uid, uint8_t blockNo, uint8_t *blockData)
-{
-    uint16_t len;
-	uint8_t d_block[8] = {0x00};
-	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
-
-    // command MIFARE_CLASSIC_WRITEBLOCK
-	d_block[0]= blockNo;
-	memcpy(d_block+1,blockData,4);
-	AppendCrc14443a(d_block, 6);
-
-    len = mifare_sendcmd_short_special(NULL, 1, 0xA2, d_block, receivedAnswer, receivedAnswerPar, NULL);
-
-	if (receivedAnswer[0] != 0x0A) {   //  0x0a - ACK
+			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;
+	uint8_t d_block[5] = {0x00};
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+    // command MIFARE_CLASSIC_WRITEBLOCK
+	d_block[0]= blockNo;
+	memcpy(d_block+1,blockData,4);
+	//AppendCrc14443a(d_block, 6);
+
+	len = mifare_sendcmd(0xA2, d_block, sizeof(d_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(struct Crypto1State *pcs, uint32_t uid) 
-{
+			Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
+        return 1;
+    }
+    return 0;
+}
+int mifare_classic_halt_ex(struct Crypto1State *pcs) {
 	uint16_t len;	
-	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
+	uint8_t receivedAnswer[4];
+	uint8_t receivedAnswerPar[4];
 
 	len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 	if (len != 0) {
-		if (MF_DBGLEVEL >= MF_DBG_ERROR)
-			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);
+}
 
-	return 0;
-}
-
-int mifare_ultra_halt(uint32_t uid)
-{
-	uint16_t len;	
-	uint8_t *receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
-    
-	len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
-	if (len != 0) {
+int mifare_ultra_halt()
+{
+	uint16_t len;
+	uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+    
+	len = mifare_sendcmd_short(NULL, true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
+	if (len != 0) {
 		if (MF_DBGLEVEL >= MF_DBG_ERROR)
-			Dbprintf("halt error. response len: %x", len);
-		return 1;
+			Dbprintf("halt error. response len: %x", len);
+		return 1;
 	}
-	return 0;
-}
-
+	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)
@@ -536,24 +552,28 @@ uint8_t FirstBlockOfSector(uint8_t sectorNo)
 }
 
 
-// work with emulator memory
-void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
-	uint8_t* emCARD = get_bigbufptr_emlcardmem();
-	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
+// work with emulator memory
+void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
+	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 = get_bigbufptr_emlcardmem();
+	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 = get_bigbufptr_emlcardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	memcpy(data, emCARD + bytePtr, byteCount);
 }
 
 int emlCheckValBl(int blockNum) {
-	uint8_t* emCARD = get_bigbufptr_emlcardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	uint8_t* data = emCARD + blockNum * 16;
 
 	if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
@@ -568,7 +588,7 @@ int emlCheckValBl(int blockNum) {
 }
 
 int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
-	uint8_t* emCARD = get_bigbufptr_emlcardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	uint8_t* data = emCARD + blockNum * 16;
 	
 	if (emlCheckValBl(blockNum)) {
@@ -576,12 +596,12 @@ int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 	}
 	
 	memcpy(blReg, data, 4);
-	*blBlock = data[12];	
+	*blBlock = data[12];
 	return 0;
 }
 
 int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
-	uint8_t* emCARD = get_bigbufptr_emlcardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	uint8_t* data = emCARD + blockNum * 16;
 	
 	memcpy(data + 0, &blReg, 4);
@@ -599,7 +619,7 @@ int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
 
 uint64_t emlGetKey(int sectorNum, int keyType) {
 	uint8_t key[6];
-	uint8_t* emCARD = get_bigbufptr_emlcardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	
 	memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
 	return bytes_to_num(key, 6);
@@ -610,7 +630,7 @@ 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 = get_bigbufptr_emlcardmem();
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	
 	memset(emCARD, 0, CARD_MEMORY_SIZE);
 	
@@ -665,8 +685,8 @@ 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 = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
+	uint8_t receivedAnswer[MAX_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 	
 	len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
 	if (len == 1) {
@@ -695,8 +715,8 @@ int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 	data[0] = 0xAF;
 	memcpy(data+1,key,16);
 	
-	uint8_t* receivedAnswer = get_bigbufptr_recvrespbuf();
-	uint8_t *receivedAnswerPar = receivedAnswer + MAX_FRAME_SIZE;
+	uint8_t receivedAnswer[MAX_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
 	
 	len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
 	
@@ -717,4 +737,4 @@ int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
 		return 0;
 	}
 	return 1;
-}
\ No newline at end of file
+}