X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/952a8bb59b197973e35ae187fc8acd2027ee570d..53ee28cb3a14f529f36fcfeb514b7ef718a31973:/armsrc/mifareutil.c

diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index 976f6dca..8ef364c2 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -18,20 +18,10 @@
 #include "iso14443a.h"
 #include "crapto1.h"
 #include "mifareutil.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;
@@ -75,35 +65,27 @@ 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)
+{
+	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;
+}
+
+// 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)
 {
-	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;
-        }
-	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;
@@ -166,8 +148,8 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
 	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);
@@ -253,8 +235,8 @@ 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);
@@ -275,54 +257,160 @@ int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blo
 	}
 	
 	memcpy(blockData, receivedAnswer, 16);
-	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
+	return 0;
+}
+
+// mifare ultralight commands
+int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
+
+	uint16_t len;
+	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);
+	//len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, 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;
+	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(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
 	uint16_t len, i;	
 	uint32_t pos;
 	uint8_t par[3] = {0};		// enough for 18 Bytes to send
 	byte_t res;
 	
 	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);
@@ -356,68 +444,69 @@ 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(struct Crypto1State *pcs, uint32_t uid) 
+{
 	uint16_t len;	
-	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];
 
 	len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);
 	if (len != 0) {
@@ -426,24 +515,24 @@ int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
 		return 1;
 	}
 
-	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) {
+	return 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;
-	}
-	return 0;
-}
-
+			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)
@@ -465,24 +554,24 @@ 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();
+// work with emulator memory
+void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
+	uint8_t* emCARD = BigBuf_get_EM_addr();
 	memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
 }
 
 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]) ||
@@ -497,7 +586,7 @@ 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)) {
@@ -510,7 +599,7 @@ int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
 }
 
 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);
@@ -528,7 +617,7 @@ 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);
@@ -539,7 +628,7 @@ 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);
 	
@@ -552,3 +641,98 @@ void emlClearMem(void) {
 	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] = {0x00};
+    dcmd[0] = cmd;
+    memcpy(dcmd+1,data,2);
+	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];
+	uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
+	
+	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_MIFARE_FRAME_SIZE];
+	uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+	
+	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;
+}